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What are the reserved I2C device addresses on the display module?

Reserved I2C devices addresses vary based on the module. Find G2C1 and G2H2 addresses in the tables below.

G2C1 Reserved I2C Device Addresses

Address Device Description
0x38 PCAP Controller PCAP controller on touch screen flex cable (if installed).
0x3E GPIO Port Expander GPIO port expander attached to GPIO port on connector J8.
0x55 PCAP Controller PCAP controller on touch screen flex cable (if installed) (alt.).
0x68 RTC Real-time clock module.

G2H2 Reserved I2C Device Addresses

Bus Address Device Description
0 0x0A CODEC
0 0x1D Temp Sensor
0 0x38 PCAP Controller PCAP controller on touch screen flex cable (if installed).
0 0x3E GPIO Port Expander GPIO port expander attached to GPIO port on connector J8.
0 0x68 RTC Real-time clock module.

 

NOTE: Bus 0 is an internal I2C bus. Bus 1 is available on connector J21 (full-stuff modules only).