SimCom SIMT 1502, Manual

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SHANGHAI SIMCOM LIMITED
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4.12.2 I2C
SIMT1502 contains two groups special functional and four groups configurable I2C, which
multiplexed with UART function.
I2C pins use GPIOs configured as open-drain outputs; the
pull-up resistor(2.2K) must be provided by external circuit(1.8V).
High speed mode I2C running at 3.4 MHz.
See
Table4-12
Table4-12 I2C interface description
Signal Pin# Description
Direction
AI/AO
TS_I2C_SDA 34 Touchscreen/ SENSORS I2C,SDA B
TS_I2C_SCL 35 Touchscreen/ SENSORS I2C,SCL DO
CCI_I2C_SDA 63 Camera I2C,SDA B
CCI_I2C_SCL 64 Camera I2C,SCL DO
The rest of I2C interface is multiplexed with UART function.
See
Table4-13 for more details.
Table4-13 I2C interface alternate function description
Signal Pin# Alternate function
GPIO_6 24 UART2 CTS_N/GP BLSP#1_I2C_SDA_B
GPIO_7 25 UART2 RTS_N/GP BLSP#1_I2C_SCL_B
GPIO_111 28 UART2 CTS_N/GP BLSP#2_I2C_SDA_B
GPIO_112 29 UART2 RTS_N/GP BLSP#2_I2C_SCL_B
GPIO_14 22 SPI4 CS_N/GP BLSP4#_I2C_SDA_B
GPIO_15 23 SPI4 CLK/GP BLSP4#_I2C_SCL_B
GPIO_10 110 SPI6 CS_N/GP BLSP6#_I2C_SDA_B
GPIO_11 111 SPI6 CLK/GP BLSP6#_I2C_SCL_B
4.12.2 SPI
SIMT1502 contains three groups configurable SPI, which multiplexed with UART/I2C function.
But, SIMT1502 only be used for master device.
See Table4-14
Table4-14 SPI interface alternate function description