LPC47M172_07 SMSC [SMSC Corporation], LPC47M172_07 Datasheet - Page 137

• Manufacturer Part Number: LPC47M172_07
• Description: Advanced I/O Controller with Motherboard GLUE Logic
• Manufacturer: SMSC [SMSC Corporation]

GPIO/EETI/Reserved
DDC (DEFAULT)
DDC (DEFAULT)
GPIO/EETI/Reserved
DDC (DEFAULT)
DDC (DEFAULT)
Note:
SMSC LPC47M172
FUNCTION SELECT
FUNCTION SELECT
DDC VS. GPIO
DDC Vs. GPIO
ALTERNATE
ALTERNATE
BIT/S
BIT/S
If any of the Alternate Function Select bits in GP20 to GP23 registers are set for DDC function, the DDC
functions will be selected on all four GP20 to GP23 pins. However, it is recommended that the DDC
functions be selected via the Alternate Function Select bits in all of the GP20 to GP23 registers when
using the DDC functions.
The GP20 to GP23 registers are defined in Chapter 8 Power Control Runtime Registers and Chapter 10
Runtime Register Block Runtime Registers.
Don’t Care
0V
3.6V (max)
Don’t Care
0V
3.6V (max)
Table 7.32 - VGA DDCSDA Voltage Translation Logic
Table 7.33 - VGA DDCSCL Voltage Translation Logic
DDCSDA_3V
DDCSCL_3V
DATASHEET
Don’t Care
0V
5.5V (max)
Don’t Care
0V
5.5V (max)
Page 137
DDCSDA_5V
DDCSCL_5V
Advanced I/O Controller with Motherboard GLUE Logic
SMSC/Non-SMSC Register Sets (Rev. 01-11-07)
No Current flow (0 mA)
Current flows from DDCSDA_5V or
DDCSDA_3V
No Current flow (0 mA)
No Current flow (0 mA)
Current flows from DDCSCL_5V or
DDCSCL_3V
No Current flow (0 mA)
CURRENT ACROSS THE SWITCH
CURRENT ACROSS THE SWITCH
Datasheet