STG3005A2S STMicroelectronics, STG3005A2S Datasheet - Page 84

• Manufacturer Part Number: STG3005A2S
• Description: 128-BIT 3D MULTIMEDIA ACCELERATOR
• Manufacturer: STMicroelectronics

RIVA128ZX
Byte offsets 0x67 - 0x64
Power Management Control/Status Register (0x67 - 0x64)
Byte offset 0xFF - 0x50
84/85
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
Bits
31:2
1:0
0x67
Function
Reserved
POWER_STATE indicates and controls the current power state of
RIVA128ZX. Two power states are supported D0 (full power) and D3hot (low
power).
0x0 = D0
0x3 = D3hot
The RIVA128ZX does not physically change its power consumption when
POWER_STATE is modified. The device can be transitioned from D3 to D0
either by writing to this register or by applying a hard reset to the PCIRST#
pin.
0x66
Reserved = 0x00000000
128-BIT 3D MULTIMEDIA ACCELERATOR
0x65
8
8
7
7
6
6
5
5
0x64
4
4
3
3
R W 0
R W I
R - 0
2
2
1
1
0
0