COMe-cTL6 – User Guide Rev. 1.7
// 31
2.3.17.
LPC
The Module LPC and eSPI interfaces share connector pins. As TGL MCP does not provide an LPC interface any more,
CTL6 onboard CPLD will implement an eSPI-to-LPC bridge. The CTL6 supports just LPC at the COMe connector.
Table 27: LPC
COMe Connector Pin
LPC Mode Connection
B[4:7]
LPC_AD[0:3]
B3
LPC_FRAME#
B10
LPC_CLK
B[8:9]
LPC_DRQ[0:1]
A50
LPC_SERIRQ
2.3.18.
I2C Bus
Two I2C Buses are generated by the on-board FPGA internal kCPLD block. or more details For more details, see kCPLD
specification 2.8.
2.3.18.1.
External user-accessible I2C (I2C_EXT)
Devices connected to the external I2C:
A0h: Module Embedded EEPROM (JIDA EEPROM)
AEh: carrier EEPROM (optional)
64h: external RTC (optional)
This I2C bus is available at COMe pins I2C_CLK (Pin B33), I2C_DAT (Pin B34).
Table 28: External user-accessible I2C (I2C_EXT)
8bit
7bit
Description
A0h
50h
Module Embedded EEPROM (JIDA EEPROM)
AEh
57h
Carrier EEPROM (optional)
64h
32h
External RTC (optional)
2.3.18.2.
Internal I2C (I2C_INT)
The second I2C bus is used for configuration of on-board devices only.
Table 29: Internal I2C (I2C_INT)
8bit
7bit
Description
C0h
60h
LVDS bridge
A0h
50h
external LVDS EEPROM
40h
20h
IMVP9 VR (optional)
An external LVDS EEPROM can be connected to the LVDS-I2C-bus at pins A83 and A84. Don´t
connect other devices to this bus.