Expansion Connectors; Low Speed Expansion Connector; Uart {0/1; I2C {0/1 - Arrow SD 600eval Hardware User Manual

7. Expansion Connectors

The 96Board CE specification calls for one Low speed expansion connector and one High speed expansion connector.

7.1 Low Speed Expansion Connector

The low speed expansion connector brings GPIO and other low speed interfaces for the Expansion Board connection. The
connector is a dual row, low profile 2mm, 40 pin female receptacle J5 (9-1734516-0)
The following tables show the Low Speed Expansion Connector pin out:

7.1.1 UART {0/1}

The 96Boards CE specification calls for a 4-wire UART implementation and an optional 2-wire UART on the Low Speed Expansion
Connector.
The SD 600eval board implements UART0 as a 4-wire UART that connects directly to the APQ8064 SoC. These signals are driven
at 1.8V.
UART1 is implemented as a 2-wire UART that connects directly to the APQ8064 SoC. These signals are driven at 1.8V.

7.1.2 I2C {0/1}

The 96Boards CE specification calls for two I2C interfaces to be implemented on the Low Speed Expansion Connector.
The SD 600eval board implements both interfaces, I2C0 and I2C1 that connects directly to the APQ8064 SoC. I2C lines are pulled
up with 2.2K resistor at 1.8V voltage level.
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Pin SD 600eval Signals
No.
1 GND
3 LS_EXP_UART_1_CTS (APQ GPIO_20)
5 LS_EXP_UART_1_TX (APQ GPIO_82)
7 LS_EXP_UART_1_RX (APQ GPIO_83)
9 LS_EXP_UART_1_RFR (APQ GPIO_21)
11 LS_DEBUG_UART_TX (APQ GPIO_18)
13 LS_DEBUG_UART_RX (APQ GPIO_19)
15 LS_EXP_I2C0_SCL (APQ GPIO_7)
17 LS_EXP_I2C0_SDA (APQ GPIO_6)
19 LS_EXP_I2C1_SCL (APQ GPIO_23)
21 LS_EXP_I2C1_SDA (APQ GPIO_22)
23 LS_EXP_GPIO_A (APQ GPIO_35) (APQ INT)
25 LS_EXP_GPIO_C (APQ GPIO_55) (TS_INT_N)
27 LS_EXP_GPIO_E (APQ GPIO_29)
(GYRO_ACCL_INT_N)
29 LS_EXP_GPIO_G (APQ GPIO_0) (DSI_VSYNC)
31 LS_EXP_GPIO_I (APQ GPIO_28) (CSI0_RST)
33 LS_EXP_GPIO_K (APQ GPIO_34) (CSI1_RST)
35 LS_EXP_1P8
37 VCC_5V0
39 GND
Pin SD 600eval Signals
No.
2 GND
4 PWRBTN#
6 RSTBTN#
8 LS_EXP_SPI_CLK
10 LS_EXP_SPI_MISO
12 LS_EXP_SPI_CS_N
14 LS_EXP_SPI_MOSI
16 LS_EXP_I2S_WS
18 LS_EXP_I2S_SCLK
20 LS_EXP_I2S_DOUT
22 LS_EXP_I2S_DIN
24 LS_EXP_GPIO_B
26 LS_EXP_GPIO_D
28 LS_EXP_GPIO_F
30 LS_EXP_GPIO_H
32 LS_EXP_GPIO_J
34 LS_EXP_GPIO_L
36 SYS_12V_DCIN
38 SYS_12V_DCIN
40 GND
20/30