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A level translator and an RS-232 level-shifting chip are recommended to be added between the module
and PC, as shown below.
UART_TXD
UART_RTS
UART_RXD
UART_CTS
GND
Module
Figure 19: Reference Circuit with RS232 Level-Shifting Chip (for UART)
NOTE
DBG_UART is similar to UART. For the reference design of DBG_UART, refer to that of UART.
4.6. I2C Interfaces
The module provides up to sixteen groups of I2C interfaces. Five of them are dedicated I2C interfaces
used for camera and sensor peripherals. Three of them are generic I2C interfaces that can be used for TP
and NFC peripherals, see Table 20 for details. Eight of them can be multiplexed from other interfaces,
see Table 23 for details.
All I2C interfaces are open drain signals and therefore must be pulled up externally. The reference power
domain is 1.8 V. The sensor I2C intreface only supports sensors of aDSP architecture. CCI_I2C signals
are controlled by Linux Kernel code and support connection to video output related devices.
Table 20: Pin Definition of I2C Interfaces
Pin Name
I2C0_SCL
I2C0_SDA
SG560D_Series_Hardware_Design
1.8 V
OE
VCCA
VCCB
TXD_3.3V
TXD_1.8V
RTS_3.3V
RTS_1.8V
RXD_1.8V
RXD_3.3V
CTS_1.8V
CTS_3.3V
GND
Pin No.
I/O
192
OD
189
OD
3.3 V
VCC
DIN1
DIN2
DIN3
DIN4
DIN5
R1OUTB
ROUT1
ROUT2
ROUT3
FORCEON
3.3 V
/FORCEOFF
Description
I2C serial clock
I2C serial data
Smart Module Series
GND
GND
DOUT1
RXD
DOUT2
CTS
DOUT3
DOUT4
DOUT5
TXD
RIN1
RIN2
RTS
RIN3
/INVALID
DB-9
Comment
External 1.8 V pull-up
is required.
If not used, keep
68 / 134
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