MEC1322 Datasheet, PDF (14/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
TABLE 1-5:
NON BACKDRIVE PROTECTED PINS
Pin Reference
Num be r
38
39
42
43
44
46
48
50
51
52
53
54
55
57
60
69
71
77
79
80
85
125
Pin Name
ADC4/GPIO062
ADC3/GPIO061
ADC2/GPIO060
ADC1/GPIO057
ADC0/GPIO056
LAD0/GPIO112
LAD1/GPIO114
LAD2/GPIO113
LAD3/GPIO111
LFRAME#/GPIO120
LRESET#/GPIO116
PCI_CLK/GPIO117
CLKRUN#/GPIO014
SER_IRQ/GPIO115
nRESET_OUT/GPIO121
XTAL2
XTAL1
VCC1_RST#/GPIO131
VREF_PECI
GPIO132/PECI_DAT
GPIO143/RSMRST#
GPIO025/I2C3_DAT0
1.4 Pin Description
1.4.1 OVERVIEW
The following tables describe the signal functions in the MEC1322 pin configuration. See Section 1.6, "Notes for Tables
in this Chapter," on page 39 for notes that are referenced in the Pin Description tables.
1.4.2 HOST INTERFACE
TABLE 1-6: HOST INTERFACE
HOST INTERFACE
Pin Ref. Number
57
Signal Name
SER_IRQ
53
LRESET#
54
PCI_CLK
52
LFRAME#
46
LAD0
48
LAD1
50
LAD2
51
LAD3
55
CLKRUN#
76
nEC_SCI
123
nSMI
Description
Serial IRQ
LPC Reset. LRESET# is the same as the
system PCI reset, PCIRST#
PCI Clock
Frame signal. Indicates start of new cycle and
termination of broken cycle
LPC Multiplexed command, address and data
bus Bit 0.
LPC Multiplexed command, address and data
bus Bit 1.
LPC Multiplexed command, address and data
bus Bit 2.
LPC Multiplexed command, address and data
bus Bit 3.
PCI Clock Control
Power Management Event
SMI Output
(11 Pins)
Notes
Note 1
Note 1
Note 1
Note 1
Note 1
DS00001719D-page 14
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