查看“MYZR-RK3399-MB314 硬件介绍”的源代码

<div>

= '''接口功能''' =
----
== '''电源接口''' ==
MYZR-RK3399_CB314 模块电源接口定义如下表所示：   
{| class="wikitable"
|-
|管脚号||管脚定义||I/O属性||功能描述
|-
|P1 ~ P9||VCC_SYS||PI||模块工作电源输入，5V/3A
|-
|P10||VCC_RTC||PI||RTC 实时时钟电源输入，3.3V供电
|-
|S10~S12||VCC3V3_SYS||PO||3.3V输出，峰值可达2A
|-
|S13~S15||VCC_1V8||PO||1.8V输出，峰值可达 1A
|-
|S16、S17||VCCA3V0_CODEC0||PO||3.0V输出，峰值可达 300mA
|-
|S18、S19||VCCA1V8_CODEC0||PO||1.8V输出，峰值可达 300mA
|-
|S20||VCC1V8_DVP||PO||1.8V输出，峰值可达 150mA
|-
|P11、P23、P31、P42、P58、P74、P81、P89、P100、P109、P119、P133、P140、P147、P154~P156、
S1~S9、S21、S22、S26、S47、S50、S53、S56、S59、S62、S65、S76、S79、S82、S85、S88、S91、

S94、S97、S100、S103、S106、S108、S110、S112、S115、S118、S121、S124、S127、S130、S133、

S136、S137、S140、S143、S146、S149、S152、S155、S158
|GND||-||地
|}
MYZR-RK3399_CB314 模块使用 VCC_SYS 供电，为保证模块能正常运行，供电电源电压不低于4.6V，不超过 5.5V，供电电流不低于 3A。建议在模块供电端口加一个大于 470uF 的电容。  


== '''多媒体接口''' ==
=== EDP接口===
MYZR-RK3399_CB314 模块eDP接口定义如下表所示：  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|S144||EDP_TX3P||D30||EDP_TX3P||O||eDP data lane3 positive output
|-
|S145||EDP_TX3N||D31||EDP_TX3N||O||eDP data lane3 negative output
|-
|S147||EDP_TX2P||C30||EDP_TX2P||O||eDP data lane2 positive output
|-
|S148||EDP_TX2N||C31||EDP_TX2N||O||eDP data lane2 negative output
|-
|S150||EDP_TX1P||B30||EDP_TX1P||O||eDP data lane1 positive output
|-
|S151||EDP_TX1N||A30||EDP_TX1N||O||eDP data lane1 negative output
|-
|S153||EDP_TX0P||B29||EDP_TX0P||O||eDP data lane0 positive output
|-
|S154||EDP_TX0N||A29||EDP_TX0N||O||eDP data lane0 negative output
|-
|S156||EDA_AUXP||B28||EDPAUXP||I/O||eDP CH-AUX positive differential output
|-
|S157||EDA_AUXN||A28||EDPAUXN||I/O||eDP CH-AUX negative differential output
|}
eDP 走线请注意：  
*eDP 信号的参考时钟建在数据中，在接收端还原出时钟信号，所以四组数据差分线对组间不做等长，只需做组内等长处理；  
*为抑制电磁辐射，eDP信号建议PCB内层走线，并保证走线参考面是一个连续完整的参考面，不被分割，否则会造成差分线阻抗的不连续性并引入外部噪声对的影响。如在PCB表层走线，请注意用地线做包地处理；差分对之间不需要伴随地走线；
eDP走线要求如表：  
{| class="wikitable"
|-
|参数||要求
|-
|Trace Impedance||100Ω ±10% differential
|-
|Max intra-pair skew||＜ 4 ps
|-
|Max trace length on carrier board||＜ 6 inch
|-
|Minimum pair to pair spacing||＞ 3 times the width of the trace.Try to increase Spacing between pairs whenever it is possible.
|-
|AC coupling capacitors||100nF ±20%, discrete 0201 package preferable
|-
|The minimum spacing between EDP and other Signals||At least 3 times the width of EDP trace.
|-
|Maximum allowed via||4
|}

=== HDMI接口===
MYZR-RK3399_CB314 模块HDMI接口定义如下表所示：  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|S48||I2C3_SDA_3V3||AG6||GPIO4_C0/I2C3_SDA/UART2B_RX_u||IO||I2C data line for HDMI
|-
|S49||I2C3_SCL_3V3||AL2||GPIO4_C1/I2C3_SCL/UART2B_TX_u||IO||I2C clock line for HDMI
|-
|S66||HDMI_CEC||AD7||GPIO4_C7/HDMI_CECINOUT/EDP_HOTPLUG_u||IO||HDMI CEC signal
|-
|S67||HDMI_TXCP||AK16||HDMI_TXCP||O||HDMI positive TMDS differential line driver clock output
|-
|S68||HDMI_TXCN||AL16||HDMI_TXCN||O||HDMI negative TMDS differential line driver clock output
|-
|S69||HDMI_TX0P||AK17||HDMI_TX0P||O||HDMI positive TMDS differential line0 driver data output
|-
|S70||HDMI_TX0N||AL17||HDMI_TX0N||O||HDMI negative TMDS differential line0 driver data output
|-
|S71||HDMI_TX1P||AK18||HDMI_TX1P||O||HDMI positive TMDS differential line1 driver data output
|-
|S72||HDMI_TX1N||AL18||HDMI_TX1N||O||HDMI negative TMDS differential line1 driver data output
|-
|S73||HDMI_TX2P||AK19||HDMI_TX2P||O||HDMI positive TMDS differential line2 driver data output
|-
|S74||HDMI_TX2N||AL19||HDMI_TX2N||O||HDMI negative TMDS differential line2 driver data output
|-
|S75||PORT_HPD||AE15||HDMI_HPD||IO||HDMI hot plug detect signal
|}
HDMI走线请注意：  
*HDMI TX信号的参考时钟为HDMI TXC，所以包括时钟在内的四组差分对都需要做等长处理；  
*HDMI信号需要保证走线参考面是一个连续完整的参考面，不被分割， 否则会造成差分线阻抗的不连续性并引入外部噪声对的影响。在PCB表层走线请注意用地线做整组包地处理； 差分对之间不需要伴随地走线；  
*HDMI信号可以直接顺序扇出到HDMI连接座，走线中应该尽可能的减少换层过孔，过孔会造成线路阻抗的不连续；如果因为模具结构无法避免换层，建议将换层的阻抗变化控制在10%以内，并在每对换层的差分对旁边就近安排一个GND过孔用于信号回流路径的换层；  
*ESD器件靠近HDMI连接座放置；  
*使用带屏蔽层的HDMI线缆，能有效改善EMI问题；  
HDMI走线要求如表：  
{| class="wikitable"
|-
|参数 ||要求
|-
|Trace Impedance ||100Ω ±10%
|-
|Max intra-pair skew ||＜ 4ps
|-
|Max trace length skew between clock and data pairs ||＜ 80ps
|-
|Max trace length on carrier board ||＜ 9.8 inchs
|-
|Minimum pair to pair spacing||＞ 3 times the width of the trace.Try to increase Spacing between pairs whenever it is possible
|-
|The minimum spacing between HDMI and other Signals ||At least 3 times the width of HDMI trace
|-
|Maximum allowed via ||4
|}

=== MIPI接口===
MYZR-RK3399_CB314 模块MIPI接口定义如下表所示： 
*MIPI DSI接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|S51||MIPI_TX0_D3N||AH9||MIPI_TX0_D3N||IO||MIPI DSI negative differential data line3 transceiver output
|-
|S52||MIPI_TX0_D3P||AG9||MIPI_TX0_D3P||IO||MIPI DSI positive differential data line3 transceiver output
|-
|S54||MIPI_TX0_D2N||AH11||MIPI_TX0_D2N||IO||MIPI DSI negative differential data line2 transceiver output
|-
|S55||MIPI_TX0_D2P||AG11||MIPI_TX0_D2P||IO||MIPI DSI positive differential data line2 transceiver output
|-
|S57||MIPI_TX0_CLKN||AH12||MIPI_TX0_CLKN||IO||MIPI DSI negative differential clock line transceiver output
|-
|S58||MIPI_TX0_CLKP||AG12||MIPI_TX0_CLKP||IO||MIPI DSI positive differential clock line transceiver output
|-
|S60||MIPI_TX0_D1N||AH14||MIPI_TX0_D1N||IO||MIPI DSI negative differential data line1 transceiver output
|-
|S61||MIPI_TX0_D1P||AG14||MIPI_TX0_D1P||IO||MIPI DSI positive differential data line1 transceiver output
|-
|S63||MIPI_TX0_D0N||AH15||MIPI_TX0_D0N||IO||MIPI DSI negative differential data line0 transceiver output
|-
|S64||MIPI_TX0_D0P||AG15||MIPI_TX0_D0P||IO||MIPI DSI positive differential data line0 transceiver output
|}
*MIPI CSI/DSI接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|S77||MIPI_TX1/RX1_D1N||AL7||MIPI_TX1/RX1_D1N||IO||MIPI CSI/DSI negative differential data line1 transceiver output
|-
|S78||MIPI_TX1/RX1_D1P||AK7||MIPI_TX1/RX1_D1P||IO||MIPI CSI/DSI positive differential data line1 transceiver output
|-
|S80||MIPI_TX1/RX1_D0N||AL6||MIPI_TX1/RX1_D0N||IO||MIPI CSI/DSI negative differential data line0 transceiver output
|-
|S81||MIPI_TX1/RX1_D0P||AK6||MIPI_TX1/RX1_D0P||IO||MIPI CSI/DSI positive differential data line0 transceiver output
|-
|S83||MIPI_TX1/RX1_D2N||AL9||MIPI_TX1/RX1_D2N||IO||MIPI CSI/DSI negative differential data line2 transceiver output
|-
|S84||MIPI_TX1/RX1_D2P||AK9||MIPI_TX1/RX1_D2P||IO||MIPI CSI/DSI positive differential data line2 transceiver output
|-
|S86||MIPI_TX1/RX1_CLKP||AK8||MIPI_TX1/RX1_CLKP||IO||MIPI CSI/DSI negative differential clock line transceiver output
|-
|S87||MIPI_TX1/RX1_CLKN||AL8||MIPI_TX1/RX1_CLKN||IO||MIPI CSI/DSI positive differential clock line transceiver output
|-
|S89||MIPI_TX1/RX1_D3P||AK10||MIPI_TX1/RX1_D3P||IO||MIPI CSI/DSI negative differential data line3 transceiver output
|-
|S90||MIPI_TX1/RX1_D3N||AL10||MIPI_TX1/RX1_D3N||IO||MIPI CSI/DSI positive differential data line3 transceiver output
|}
*MIPI CSI接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|S92||MIPI_RX0_D0P||AK15||MIPI_RX0_D0P||IO||MIPI CSI positive differential data line0 transceiver output
|-
|S93||MIPI_RX0_D0N||AL15||MIPI_RX0_D0N||IO||MIPI CSI negative differential data line0 transceiver output
|-
|S95||MIPI_RX0_D1P||AK14||MIPI_RX0_D1P||IO||MIPI CSI positive differential data line1 transceiver output
|-
|S96||MIPI_RX0_D1N||AL14||MIPI_RX0_D1N||IO||MIPI CSI negative differential data line1 transceiver output
|-
|S98||MIPI_RX0_CLKP||AK13||MIPI_RX0_CLKP||IO||MIPI DSI positive differential clock line transceiver output
|-
|S99||MIPI_RX0_CLKN||AL13||MIPI_RX0_CLKN||IO||MIPI DSI negative differential clock line transceiver output
|-
|S101||MIPI_RX0_D2P||AK12||MIPI_RX0_D2P||IO||MIPI CSI positive differential data line2 transceiver output
|-
|S102||MIPI_RX0_D2N||AL12||MIPI_RX0_D2N||IO||MIPI CSI negative differential data line2 transceiver output
|-
|S104||MIPI_RX0_D3P||AK11||MIPI_RX0_D3P||IO||MIPI CSI positive differential data line3 transceiver output
|-
|S105||MIPI_RX0_D3N||AL11||MIPI_RX0_D3N||IO||MIPI CSI negative differential data line3 transceiver output
|}
MIPI DSI： <br>
*单MIPI工作模式下，必须使用MIPI_DSI0，即MIPI_TX0这组； MIPI-DSI1不能被单独使用；  <br>
*双MIPI工作模式下，MIPI_TX0和MIPI_TX1/RX1通道可以根据布局以及走线需要，整组调换使用； 

MIPI CSI：  <br>
*RK3399有两组MIPI-CSI输入，均内置ISP处理器，在双MIPI输入的时候可以同时使用。   

MIPI 走线请注意：  
*为抑制电磁辐射， MIPI信号建议PCB内层走线，并保证走线参考面是一个连续完整的参考面，不被分割， 否则会造成差分线阻抗的不连续性并引入外部噪声对的影响。如在PCB表层走线，请注意用地线做包地处理； 差分对之间不需要伴随地走线；  
*MIPI信号在设置走线的延时时，请尽量靠近RK3399端；  

MIPI 走线要求如表：  
{| class="wikitable"
|-
|参数 ||要求
|-
|Trace Impedance ||100Ω ±10% differential
|-
|Max intra-pair skew ||＜ 4ps
|-
|Max trace length skew between clock and data pairs ||＜ 7ps
|-
|Max trace length ||＜ 7.2inch
|-
|Maximum allowed via ||Minimize the number of via in each lane
|-
|Minimum pair to pair spacing ||＞ 3 times the width of the trace.Try to increase Spacing between pairs whenever it is possible.
|-
|The minimum spacing between Mipi and other Signals ||At least 3 times the width of Mipi trace.
|}

=== CIF接口===
MYZR-RK3399_CB314 模块CIF接口定义如下表所示：
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P120||CIF_D4||H29||GPIO2_A4/VOP_D4/CIF_D4_d||I||Camera interface input pixel data4
|-
|P121||CIF_D6||H27||GPIO2_A6/VOP_D6/CIF_D6_d||I||Camera interface input pixel data6
|-
|P122||CIF_CLKO||H31||GPIO2_B3/SPI2_CLK/VOP_DEN/CIF_CLKOUTA_u||O||Camera interface output work clock
|-
|P123||CIF_D1||H25||GPIO2_A1/VOP_D1/CIF_D1/I2C2_SCL_u||I||Camera interface input pixel data1
|-
|P124||CIF_D0||G31||GPIO2_A0/VOP_D0/CIF_D0/I2C2_SDA_u||I||Camera interface input pixel data0
|-
|P125||CIF_D7||G30||GPIO2_A7/VOP_D7/CIF_D7/I2C7_SDA_u||I||Camera interface input pixel data7
|-
|P126||DVP_PDN0_H||F31||GPIO2_B4/SPI2_CSn0_u||IO||
|-
|P127||CIF_VSYNC||H28||GPIO2_B0/VOP_CLK/CIF_VSYNC/I2C7_SCL_u||I||Camera interface vertical sync signal
|-
|P128||CIF_D2||H30||GPIO2_A2/VOP_D2/CIF_D2_d||I||Camera interface input pixel data2
|-
|P129||CIF_CLKI||H24||GPIO2_B2/SPI2_TXD/CIF_CLKIN/I2C6_SCL_u||I||Camera interface input pixel clock
|-
|P130||CIF_HREF||F30||GPIO2_B1/SPI2_RXD/CIF_HREF/I2C6_SDA_u||I||Camera interface horizontial sync signal
|-
|P131||CIF_D3||F28||GPIO2_A3/VOP_D3/CIF_D3_d||I||Camera interface input pixel data3
|-
|P132||CIF_D5||F29||GPIO2_A5/VOP_D5/CIF_D5_d||I||Camera interface input pixel data5
|}

=== I2S/PCM接口===
MYZR-RK3399_CB314 模块I2S/PCM接口定义如下表所示：  
*I2S/PCM接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P12||I2S_CLK||AC7||GPIO4_A0/I2S_CLK_d||IO||I2S/PCM clock source, shared by I2S0 and I2S1
|}
*I2S0/PCM0接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P13||I2S0_SDI1||AE5||GPIO3_D4/I2S0_SDI1SDO3_d||IO||I2S/PCM serial data input[1] or output [3]
|-
|P14||I2S0_SCLK||AG3||GPIO3_D0/I2S0_SCLK_d||IO||I2S/PCM serial clock
|-
|P15||I2S0_LRCK_RX||AF4||GPIO3_D1/I2S0_LRCK_RX_d||IO||I2S/PCM left & right channel signal for receiving serial data,synchronous left & right channel 
in I2S mode and the beginning of a group of left & right channels in PCM mode
|-
|P16||I2S0_LRCK_TX||AJ2||GPIO3_D2/I2S0_LRCK_TX_d||IO||I2S/PCM left & right channel signal for transmitting serial data, synchronous left & right channel 
in I2S mode and the beginning of a group of left & right channels in PCM mode
|-
|P17||I2S0_SDI0||Y7||GPIO3_D3/I2S0_SDI0_d||IO||I2S/PCM serial data input[0]
|-
|P18||I2S0_SDO2||AA6||GPIO3_D5/I2S0_SDI2SDO2_d||IO||I2S/PCM serial data input [2] or output [2]
|-
|P19||I2S0_SDO1||AH2||GPIO3_D6/I2S0_SDI3SDO1_d||IO||I2S/PCM serial data input [3] or output [1]
|-
|P20||I2S0_SDO0||AH1||GPIO3_D7/I2S0_SDO0_d||IO||I2S/PCM serial data output [0]
|}
*I2S1/PCM1接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P24||I2S1_SCLK_BT_PCM||AF3||GPIO4_A3/I2S1_SCLK_d||IO||I2S/PCM serial clock
|-
|P25||I2S1_LRCK_RX_BT_PCM||AA7||GPIO4_A4/I2S1_LRCK_RX_d||IO||I2S/PCM left & right channel signal for receiving serial data,synchronous left & right channel 
in I2S mode and the beginning of a group of left & right channels in PCM mode
|-
|P26||I2S1_LRCK_TX_BT_PCM||AJ1||GPIO4_A5/I2S1_LRCK_TX_d||IO||I2S/PCM left & right channel signal for transmitting serial data, synchronous left & right channel 
in I2S mode and the beginning of a group of left & right channels in PCM mode
|-
|P27||I2S1_SDI0_BT_PCM||AD6||GPIO4_A6/I2S1_SDI0_d||IO||I2S/PCM serial data input [0]
|-
|P28||I2S1_SDO0_BT_PCM||AC6||GPIO4_A7/I2S1_SDO0_d||IO||I2S/PCM serial data output [0]
|}

I2S/PCM走线请注意：  <br>
*I2S/PCM在PCB布线上相邻的参考层要保持完整（相邻层要保持是同一个平面）， 避免一些电源等其他信号的干扰， 且与同一层的其他的线有GND隔离

===SPDIF===
MYZR-RK3399_CB314 模块SPDIF接口定义如下表所示：  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P39||PCIE_CLKREQ||AK1||GPIO4_C5/SPDIF_TX_d||O||S/PDIFbiphase data ouput
|-
|P152||RGMII_INT||D27||GPIO3_C0/MAC_COL/UART3_CTSn/SPDIF_TX_u||O||S/PDIFbiphase data ouput
|}



== '''多媒体接口''' ==
===SDMMC接口===
MYZR-RK3399_CB314 模块SDIO接口定义如下表所示：  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P87||SDMMC0_CLK||V29||GPIO4_B4/SDMMC0_CLKOUT/MUCJTAG_TCK_d||O||SDMMC card clock
|-
|P82||SDMMC0_CMD||V25||GPIO4_B5/SDMMC0_CMD/MCUJTAG_TMS_u||I/O||SDMMCcard command output and reponse input
|-
|P84||SDMMC0_D0||Y27||GPIO4_B0/SDMMC0_D0/UART2A_RX_u||I/O||SDMMCcard data0 input and output
|-
|P83||SDMMC0_D1||Y26||GPIO4_B1/SDMMC0_D1/UART2A_TX_u||I/O||SDMMCcard data1 input and output
|-
|P85||SDMMC0_D2||Y28||GPIO4_B2/SDMMC0_D2/APJTAG_TCK_u||I/O||SDMMCcard data2 input and output
|-
|P88||SDMMC0_D3||U27||GPIO4_B3/SDMMC0_D3/APJTAG_TMS_u||I/O||SDMMCcard data3 input and output
|-
|P86||SDMMC0_DET_L||V28||GPIO0_A7/SDMMC0_DET_u||I||SDMMCcard detect signal, a 0 represents presence of card
|}

===SDIO接口===
MYZR-RK3399_CB314 模块SDIO接口定义如下表所示：  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|S39||SDIO0_CLK||AF7||GPIO2_D1/SDIO0_CLKOUT/TEST_CLKOUT1_u||O||SDIO card clock.
|-
|S37||SDIO0_CMD||AH6||GPIO2_D0/SDIO0_CMD_u||I/O||SDIO card command output and reponse input.
|-
|S36||SDIO0_D0||AD8||GPIO2_C4/SDIO0_D0/SPI5_RXD_u||I/O||SDIOcard data0 input and output.
|-
|S38||SDIO0_D1||AK5||GPIO2_C5/SDIO0_D1/SPI5_TXD_u||I/O||SDIOcard data1 input and output.
|-
|S40||SDIO0_D2||AG7||GPIO2_C6/SDIO0_D2/SPI5_CLK_u||I/O||SDIOcard data2 input and output.
|-
|S41||SDIO0_D3||AE8||GPIO2_C7/SDIO0_D3/SPI5_CSn0_u||I/O||SDIOcard data3 input and output.
|-
|S42||BT_WAKE_L||AL4||GPIO2_D2/SDIO0_DETN/PCIE_CLKREQn_u||I||SDIOcard detect signal, a 0 represents presence of card.
|-
|S27||GPIO2_D4||AF8||GPIO2_D4/SDIO0_BKPWR_d||O||the back-end power supply for embedded device
|-
|S35||GPIO2_D3||AD9||GPIO2_D3/SDIO0_PWREN_d||O||SDIOcard power-enable control signal
|-
|P91||WIFI_HOST_WAKE_L||V31||GPIO0_A3/SDIO0_WRPT_d||I||SDIOcard write protect signal, a 1 represents write is protected.
|-
|P103||BT_HOST_WAKE_L||AA25||GPIO0_A4/SDIO0_INTn_d||O||SDIOcard interrupt indication
|}

SDIO/SDMMC走线请注意：<br>
*CLK单独走线，并做包地处理； DATA走线间距遵守3W规则； 并保证走线的参考面是一个连续完整的参考面，不被分割；  <br>
*负载电容包括SD卡负载电容以及PCB负载电容两部分，其中SD卡的负载电容协议规定应该是小于10pF；   

SDIO/SDMMC走线要求如表：  
{| class="wikitable"
|-
|参数 ||要求
|-
|Trace Impedance ||50Ω ±10% single ended
|-
|Max skew between data signal and clock ||< 20ps
|-
|Max trace length ||< 3.93 inchs
|-
|The minimum spacing of SDIO Signals ||At least 2 times the width of SDIO trace.
|}



== '''通讯接口''' ==
===RGMII接口===
MYZR-RK3399_CB314 模块RGMII接口定义如下表所示： 
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P134||RGMII_TXEN||H22||GPIO3_B4/MAC_TXEN/UART1_RX_u||O||GMAC TX data enable
|-
|P135||RGMII_TXD0||D26||GPIO3_A4/MAC_TXD0/SPI0_RXD_d||O||GMAC TX data0
|-
|P136||RGMII_TXD1||G23||GPIO3_A5/MAC_TXD1/SPI0_TXD_d||O||GMAC TX data1
|-
|P137||RGMII_TXD2||F24||GPIO3_A0/MAC_TXD2/SPI4_RXD_d||O||GMAC TX data2
|-
|P138||RGMII_TXD3||H23||GPIO3_A1/MAC_TXD3/SPI4_TXD_d||O||GMAC TX data3
|-
|P139||RGMII_TXCLK||E28||GPIO3_C1/MAC_TXCLK/UART3_RTSn_u||O||RGMII TX clock output
|-
|P141||RGMII_RXDV||C27||GPIO3_B1/MAC_RXDV_d||I||GMAC RX data valid signal
|-
|P142||RGMII_RXD0||E26||GPIO3_A6/MAC_RXD0/SPI0_CLK_u||I||GMAC RX data0
|-
|P143||RGMII_RXD1||F27||GPIO3_A7/MAC_RXD1/SPI0_CSn0_u||I||GMAC RX data1
|-
|P144||RGMII_RXD2||E30||GPIO3_A2/MAC_RXD2/SPI4_CLK_u||I||GMAC RX data2
|-
|P145||RGMII_RXD3||E25||GPIO3_A3/MAC_RXD3/SPI4_CSn0_u||I||GMAC RX data3
|-
|P146||RGMII_RXCLK||F25||GPIO3_B6/MAC_RXCLK/UART3_RX_u||I||RGMII RX clock input
|-
|P148||RGMII_CLK||G24||GPIO3_B3/MAC_CLK/I2C5_SCL_u||I/O||RMII REC_CLK output or GMAC external clock input
|-
|P149||RGMII_MDC||E29||GPIO3_B0/MAC_MDC/SPI0_CSn1_u||O||GMAC management interface clock
|-
|P150||RGMII_MDIO||G26||GPIO3_B5/MAC_MDIO/UART1_TX_u||I/O||GMAC management interface data
|-
|P151||RGMII_RST||B27||GPIO3_B7/MAC_CRS/CIF_CLKOUTB/UART3_TX_u||I||PHY CRS signal
|-
|P152||RGMII_INT||D27||GPIO3_C0/MAC_COL/UART3_CTSn/SPDIF_TX_u||I||PHY Collision signal
|-
|P153||RGMII_RXER||F23||GPIO3_B2/MAC_RXER/I2C5_SDA_u||I||GMAC RX error signal
|}

RGMII走线请注意：<br>
*PHY越靠近MYZR-RK3399_CB314 模块， EMI效果会越好，即RGMII走线越短EMI效果越好，必须小于15cm。<br>
*RGMII_RXCL、RGMII_TXCLK必须包地处理 <br>
*其它信号间距要满足3W布线原则 <br>
*RGMII_RXD[0:3],RGMII_RXDV,RGMII_RXCLK走线要等长处理，整条相差小于100mil，走线要尽量短，整条长度要小于15CM <br>
*RGMII_TXD[0:3],RGMII_TXEN,RGMII_TXCLK走线要等长处理，整条相差小于100mil，走线要尽量短，整条长度要小于15CM <br>
*要有完整的参考面，不能和其它信号线直接平行布线。<br>

===USB接口===
MYZR-RK3399_CB314 模块USB接口定义如下表所示：  
*USB2.0—HOST0接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P75||HOST0_DP||AB30||HOST0_DP||I/O||USB 2.0 data DP
|-
|P76||HOST0_DM||AB31||HOST0_DM||I/O||USB 2.0 data DN
|}
*USB2.0—HOST1接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P77||HOST1_DP||AA30||HOST1_DP||I/O||USB 2.0 data DP
|-
|P78||HOST1_DM||AA31||HOST1_DM||I/O||USB 2.0 data DN
|}
*USB3.0—TYPEC0接口定义  
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P43||TYPEC0_SBU1_DC||AH17||TYPEC0_AUXP_PD_PU||rowspan=2|I/O||rowspan=2|AUX pull-up/pull-down polarity reversal pins. For normal connectororientation, 
there is a weak pull-down on aux_p wires and aweak pull-up on aux_m wire.

These pins are used to reverse thisfor the flipped connector case.
|-
|P44||TYPEC0_SBU2_DC||AG17||TYPEC0_AUXM_PU_PD
|-
|P45||TYPEC0_SBU2||AL20||TYPEC0_AUXM||rowspan=2|I/O||rowspan=2|AUX differential Tx/Rx serial data
|-
|P46||TYPEC0_SBU1||AK20||TYPEC0_AUXP
|-
|P47||TYPEC0_RX1N||AL21||TYPEC0_RX1N||rowspan=2|I/O||rowspan=2|Lane 1 transmitter/receiver serial data - USB Rx or DP Tx. 
RX1+/RX1- USB Type-C receptacle pins (B11/B10)
|-
|P48||TYPEC0_RX1P||AK21||TYPEC0_RX1P
|-
|P49||TYPEC0_TX1P||AL22||TYPEC0_TX1P||rowspan=2|O||rowspan=2|Lane 0 transmitter serial data - USB Tx or DP Tx. 
TX+/TX1- USB Type-C receptacle pins (A2/A3)
|-
|P50||TYPEC0_TX1N||AK22||TYPEC0_TX1N
|-
|P51||TYPEC0_RX2N||AL23||TYPEC0_RX2N||rowspan=2|I/O||rowspan=2|Lane 2 transmitter/receiver serial data - USB Rx or DP Tx. 
RX2+/RX2- USB Type-C receptacle pins (A11/A10)
|-
|P52||TYPEC0_RX2P||AK23||TYPEC0_RX2P
|-
|P53||TYPEC0_TX2P||AL24||TYPEC0_TX2P||rowspan=2|O||rowspan=2|Lane 3 transmitter serial data - USB Tx or DP Tx. 
TX2+/TX2- USB Type-C receptacle pins (B2/B3)
|-
|P54||TYPEC0_TX2N||AK24||TYPEC0_TX2N
|-
|P55||TYPEC0_DP||AG23||TYPEC0_DP||I/O||USB 2.0 data DP
|-
|P56||TYPEC0_DM||AH23||TYPEC0_DM||I/O||USB 2.0 data DN
|-
|P57||TYPEC0_U2VBUSDET||AK30||TYPEC0_U2VBUSDET||I||VBUS BUMP into the PHY for VBUS monitor
|}
*USB3.0—TYPEC1接口定义 
{| class="wikitable"
|-
|模块管脚号||模块管脚定义||CPU 管脚号||CPU 管脚定义||I/O属性||功能描述
|-
|P59||USB3_SSRXN||AL25||TYPEC1_RX1N||rowspan=2|I/O||rowspan=2|Lane 1 transmitter/receiver serial data - USB Rx or DP Tx. 
RX1+/RX1- USB Type-C receptacle pins (B11/B10)
|-
|P60||USB3_SSRXP||AK25||TYPEC1_RX1P
|-
|P61||USB3_SSTXP||AL26||TYPEC1_TX1P||rowspan=2|O||rowspan=2|Lane 0 transmitter serial data - USB Tx or DP Tx. 
TX+/TX1- USB Type-C receptacle pins (A2/A3)
|-
|P62||USB3_SSTXN||AK26||TYPEC1_TX1N
|-
|P63||TYPEC1_RX2N||AL27||TYPEC1_RX2N||rowspan=2|I/O||rowspan=2|Lane 2 transmitter/receiver serial data - USB Rx or DP Tx. 
RX2+/RX2- USB Type-C receptacle pins (A11/A10)
|-
|P64||TYPEC1_RX2P||AK27||TYPEC1_RX2P
|-
|P65||TYPEC1_TX2P||AL28||TYPEC1_TX2P||rowspan=2|O||rowspan=2|Lane 3 transmitter serial data - USB Tx or DP Tx. 
TX2+/TX2- USB Type-C receptacle pins (B2/B3)
|-
|P66||TYPEC1_TX2N||AK28||TYPEC1_TX2N
|-
|P67||TYPEC1_SBU2||AL29||TYPEC1_AUXM||rowspan=2|I/O||rowspan=2|AUX differential Tx/Rx serial data
|-
|P68||TYPEC1_SBU1||AK29||TYPEC1_AUXP
|-
|P69||TYPEC1_SBU1_DC||AE24||TYPEC1_AUXP_PD_PU||rowspan=2|I/O||rowspan=2|AUX pull-up/pull-down polarity reversal pins. For normal connectororientation, 
there is a weak pull-down on aux_p wires and aweak pull-up on aux_m wire.

These pins are used to reverse thisfor the flipped connector case.
|-
|P70||TYPEC1_SBU2_DC||AF25||TYPEC1_AUXM_PU_PD||||
|-
|P71||TYPEC1_U2VBUSDET||AK31||TYPEC1_U2VBUSDET||I||VBUS BUMP into the PHY for VBUS monitor
|-
|P72||USB3_DP||AG24||TYPEC1_DP||I/O||USB 2.0 data DP
|-
|P73||USB3_DM||AH24||TYPEC1_DM||I/O||USB 2.0 data DN
|}


USB 2.0走线要求如下： <br>
*ESD器件靠近USB连接座放置；
*USB接口应尽量靠近芯片放置，以缩短走线距离；USB的信号走线必须严格遵循差分规则要求走线。走线拐角尽量用弧线或者钝角， 不能为直角或锐角
*为抑制电磁辐射， USB建议在内层走线，并保证走线参考面是一个连续完整的参考面，不被分割，否则会造成差分线阻抗的不连续性并增加外部噪声对差分线的影响 
*USB走线与其他信号需保持至少3W以上的间距
*USB走线与其他信号需保持至少3W以上的间距
*USB 2.0规范定义的电流为500mA，但是VBUS走线最好能承受1A的电流， 防止过流。如果是在使用USB充电的情况下， VBUS走线需能承受2.5A的电流； 
USB2.0走线要求
{| class="wikitable"
|-
|参数 ||要求
|-
|Trace Impedance ||90Ω ±10% differential
|-
|Max intra-pair skew ||< 4ps
|-
|Max trace length on carrier board ||< 6 inchs
|-
|Maximum allowed via ||6
|}

USB 3.0走线基本参考《USB2.0设计》，另外请注意：<br>
*USB 3.0工作模式为全双工，所以差分对SS_TX和SS_RX之间不需要做等长处理；
*USB 3.0协议要求在SS_TX线上增加100nF交流耦合电容（AC coupling capacitors），请对称放置电容并靠近USB连接座； 
*SS_TX和SS_RX信号请严格按照差分对要求走线，保持走线间距一致，以保证走线阻抗的连续性；
*SS_TX和SS_RX信号在设置走线的延时时，请尽量靠近源端：即SS_RX信号靠近USB连接座，而SS_TX信号靠近RK3399。
*为抑制电磁辐射，USB信号建议PCB内层走线，并保证走线参考面是一个连续完整的参考面，不被分割，否则会造成差分线阻抗的不连续性并引入外部噪声对的影响。如在PCB表层走线，请注意用地线做整组包地处理；差分对之间不需要伴随地走线；
RK3399 USB3.0走线要求
{| class="wikitable"
|-
|参数 ||要求
|-
|Trace Impedance ||90Ω ±10% differential
|-
|Max intra-pair skew ||< 4ps
|-
|Max trace length skew between RX and TX data pairs ||< 1.6ns
|-
|Max trace length on carrier board ||< 6inchs
|-
|AC coupling capacitors ||100nF ±20%, discrete 0201 package preferable
|-
|Minimum pair to pair spacing||> 3 times the width of the trace.
Try to increase Spacing between pairs whenever it is possible.
|-
|The minimum spacing between USB and other Signals ||At least 3 times the width of USB trace.
|-
|Maximum allowed via ||4
|}
</div>