miriac SBC-S32G-R3_User Manual
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© MicroSys Electronics GmbH 2021
5.7
I²C Bus
The SBC-S32G274A offers five independent I²C busses.
The following tables show the I²C addresses as 7-bit addresses. The R/W bit is not
displayed.
5.7.1 I2C-0
Used on module for boot configuration.
I²C Bus 0 (7-bit address):
Address
Device
Function
0x51
PCF85263ATL
RTC
0x4C
TMP451AIDQF
Temperature sensor
0x54
BR24G128NUX-3
EEPROM
0x43
FXL6408
IO-Expander
0x4D
PCA9561PW
EEPROM Dip-switch
non
FXMA2102
Bus isolation
0x50
AT24C01C-XHM
EEPROM (boot config)
0x56
AT24C01C-XHM
EEPROM (boot config alternate)
Table 5-1 I²C0 bus map
The I²C Bus 0 has the following layout:
I/O Range: LVTTL
Device
SCL
(Signal Name)
Pin
SDA
(Signal Name)
Pin
S32G274A
PB01_I2C0_SCL
E7
PB00_I2C0_SDA
W12
↓
↕
PCF85263ATL
SCL
5
SDA
8
↓
↕
TMP451AIDQF
SCK
8
SDA
7
↓
↕
BR24G128NUX-3
SCL
6
SDA
5
↓
↕
FXL6408
SCL
13
SDA
14
↓
↕
FXMA2102
SCL
2
SDA
3
↓
↕
Module Connector
PB01_I2C0_SCL
B133
PB00_I2C0_SDA
B134
Table 5-2 I²C-0 pin assignment
There are no devices on the carrier using this bus.
