w83627ef Winbond Electronics Corp America, w83627ef Datasheet - Page 31

• Manufacturer Part Number: w83627ef
• Description: Lpc Super I/o For Desktop & Server
• Manufacturer: Winbond Electronics Corp America

6.2.2
The second interface uses I
It defined at Index 48h.
6.2.2.1. Serial bus (I
(a) Serial bus write to internal address register followed by the data byte
(b) Serial bus read from a register
6.3
The maximum input voltage of the analog pin is 2.048V because the 8-bit ADC has a 8mV LSB. Really,
the application of the PC monitoring would most often be connected to power suppliers. The CPU
Vcore voltage , battery(pin 74), 3VSB(pin 61), 3VCC(pin 12) , AVCC(pin 114) voltage can directly
connected to these analog inputs. The +12V voltage inputs should be reduced a factor with external
resistors so as to obtain the input range. As Figure 6.2 shows.
SCL
SDA
SCL
SDA
Analog Inputs
I
Start By
Master
2
Repeat
start
by
Master
C interface
Start By
Master
0
0
0
0
Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte
0
0
1
1
2
Serial Bus Address Byte
C) access timing
Serial Bus Address Byte
1
0
Figure 2. Serial Bus Read from Internal Address Register
0
Serial Bus Address Byte
SCL
SDA (Continued)
Frame 3
Frame 1
0
1
2
1
(Continued)
C Serial Bus. W83627EHF/EHG has a programmable serial bus address.
Frame 1
1
1
1
1
0
0
0
1
W83627EHF/EF, W83627EHG/EG
1
1
R/W
0
7
R/W
7
0
D7
627EHF
Ack
0
7
R/W
by
8
- 25 -
627EHF
Ack
627EHF
by
Ack
8
D6
by
8
0
D7
0
D7
D5
0
D7
D6
Data Byte
Frame 4
D6
D4
D6
D5
Internal Index Register Byte
Internal Index Register Byte
D5
D5
D3
Data Byte
D4
Frame 3
Frame 2
Frame 2
Publication Release Date: Nov. 2006
D4
D4
D2
D3
D3
D2
D3
D1
D2
D1
D2
7
D0
D1
7
D0
Ack
784R
627EHF
by
Ack
D1
8
by
7
D0
Master
Ack
by
8
7
D0
Stop
Master
by
627EHF
Ack
8
Stop by
Master
by
Revision 1.3
627EHF
Ack
8
by