W83791G Datasheet, PDF (48/99 Pages) Winbond – Winbond H/W Monitoring IC

W83791D/G
7.31 VID/Fan Divisor Register ⎯ Index 47h (Bank 0)
Power on default: 0101_xxxx
BIT
NAME
ATTRIBUTE
DESCRIPTION
7-6 FAN2_DIV
R/W
FAN2 Speed Divisor. The third bit of FAN 2 divisor is defined in
Index 5Dh.
<7:6> = 00 - divide by 1;
<7:6> = 01 - divide by 2 (Default);
<7:6> = 10 - divide by 4;
<7:6> = 11 - divide by 8.
5-4 FAN1_DIV
R/W
FAN1 Speed Control. The third bit of FAN 1 divisor is defined
in Index 5Dh.
<5:4> = 00 - divide by 1;
<5:4> = 01 - divide by 2 (Default);
<5:4> = 10 - divide by 4;
<5:4> = 11 - divide by 8.
3-0 VID <3:0>
Read only The VID <3:0> inputs, which is latched when VDD 5V power
good.
Note: Please refer to Bank0 Index 5Dh, Fan divisor table.
7.32 Serial Bus Address Register ⎯ Index 48h (Bank 0)
Power on default: 0010_11xx.
BIT
NAME
7
Reserved
ATTRIBUTE
Reserved.
DESCRIPTION
6-0 SMBADDR1 R/W
Serial Bus Address <7:1> for general index registers. The
address bit 0 and bit 1 are trapped by the pin 10 and pin
11, respectively.
7.33 Voltage ID (VID4) & Device ID ⎯ Index 49h (Bank 0)
Power on default: 0001_000x
BIT NAME
7-1 ^DID<6:0>
ATTRIBUTE
Read only
DESCRIPTION
Device ID<6:0>, W83791D/G version ID that differentiates chip
serial product number. This default value is 0010000b, that
means is 1.0.
0 VID4
Read only
The VID4 input, which is latched when VDD 5V power good.
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Publication Release Date: April 14, 2006
Revision 1.1