User's Manual l MBa6ULxL UM 0101 l © 2018, TQ-Systems GmbH
Page 8
4.1.3
I
2
C address mapping
A port replicator and the I
2
C touch screen controller can be addressed via I2C4 on the MBa6ULxL.
Table 5 shows the addresses used on the TQMa6ULxL and the MBa6ULxL. The I2C4 bus is also routed to header X22.
The following table shows the address assignment of TQMa6ULxL and MBa6ULxL.
Illustration 5:
Block diagram I
2
C busses
Table 5:
I2C4 address assignment
Component
Ref ID
Address
Location
PMIC (PF3000/3001)
–
0x08
000 1000b
TQMa6ULxL
Temperature sensor (SE97BTP)
–
0x1A
001 1010b
TQMa6ULxL
Port replicator (PCA9554BS)
D20
0x22
010 0010b
MBa6ULxL
I
2
C Touch Screen Controller (STMPE811Q)
D9
0x41
100 0001b
MBa6ULxL
EEPROM (24LC64T-I_MC)
–
0x50
101 0000b
TQMa6ULxL
EEPROM (SE97BTP)
–
0x32
011 0010b
TQMa6ULxL
EEPROM (SE97BTP)
–
0x52
101 0010b
TQMa6ULxL
RTC (DS1339U-33)
–
0x68
110 1000b
TQMa6ULxL