SMBus2
REG
OFFSET
Vbat
POR
OFFSET
(hex)
PCI
RESET
VCC
POR
VTR
POR
SOFT
RESET
TYPE
REGISTER
51
52
53
54
55
R/W
R/W
R/W
R/W
R/W
(Note 1)
R/W
R/W
R/W
R
-
-
0x00
0x00
0x00
0x00
0x00
-
-
-
-
-
-
-
-
-
-
GP7
-
-
-
-
-
0x00
0x00
0x00
0x00
0x00
WDT_TIME_OUT
WDT_VAL
0x00
0x00
WDT_CFG
0x00
WDT_CTRL
(Note 2)
56
57
58
59
5A
5B
5C
5D
5E
5F
60
61
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0x00
-
-
-
-
-
-
-
-
-
-
-
-
-
-
FAN
-
-
-
-
-
-
-
-
-
-
-
-
-
Reserved – read returns 0
Fan Control
0x10
0x00
-
-
-
Fan Tachometer
Reserved – read returns 0
Fan Preload
R
-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
(Note 1)
R
0x00
-
-
-
Reserved – read returns 0
LED1
0x00
0x01
0x00
-
-
-
LED2
-
Keyboard Scan Code
PM1_CNTRL1
PM1_CNTRL2
0x00
0x00
-
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
71
72
73
74
75
76
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Reserved – read returns 0
Reserved – read returns 0
SMI_STS7
-
-
R
-
-
R/W
R
0x00
-
-
-
-
Reserved – read returns 0
SMI_EN7
-
R/W
R
0x00
-
-
-
-
Reserved – read returns 0
PME_STS7
-
R/W
R
0x00
-
-
-
-
Reserved – read returns 0
Reserved – read returns 0
Reserved – read returns 0
PME_EN7
-
R
-
-
-
R
-
-
-
R/W
R
0x00
-
-
-
0X00
0X00
0X00
0X00
0X00
0X00
0X00
0X00
-
Vcc_CNT1 Byte 1 (LSB)
Vcc_CNT2 Byte 2
04
05
06
07
08
09
0A
0B
-
R
-
R
-
Vcc_CNT3 Byte 3
R
-
Vcc_CNT4 Byte 4 (MSB)
Vtr_CNT1 Byte 1 (LSB)
Vtr_CNT2 Byte 2
R
-
R
-
R
-
-
Vtr_CNT3 Byte 3
R
Vtr_CNT4 Byte 4 (MSB)
Reserved – read returns 0
R
-
R/W
1010
11xxb
(Note 9)
0x02
-
SMBus2 Slave Address
and Enable
-
77
R/W
0x02
0x02
-
0000
LPC_ARB
Register
Arbitration
-
(Note 11)
00x0b
(Note 8)
78
79
R/W
R/W
-
-
-
-
(Note 7)
0x00
0x00
-
-
PM1_STS1
PM1_STS2
-
-
x0xx
xxxxb
(Note 7a)
SMSC LPC47S45x
Page 158 of 259
Rev. 06-01-06
DATASHEET
SMSC [ SMSC CORPORATION ]
