MEC1404 Datasheet, PDF (441/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
34.8.6 POWER REGIONS VOLTAGE CONTROL
Offset ^48h
Bits
Description
Type
31:4 Reserved
R
3 VTR_LPC_ESPI_SEL18
R/W
0 = 3.3V Operation (use for LPC interface)
1 = 1.8V Operation (use for eSPI Interface)
Note:
If the I2C interface is used as the host interface, the
GPIOs on the LPC and eSPI interface may be config-
ured to operate as either 1.8V or 3.3V GPIOs..
2 Test
R/W
Note: Writing this register bit to a different value may cause
unwanted results. This bit must always be set to 0.
1 Test
R/W
Note: Writing this register bit to a different value may cause
unwanted results. This bit must always be set to 0.
0 Reserved
R
Default
-
0b
Reset
Event
-
nSYSRST
0b
nSYSRST
0b
nSYSRST
-
-
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DS00001956D-page 441