ucb1500 NXP Semiconductors, ucb1500 Datasheet - Page 11
![no-image](/images/manufacturer_photos/0/4/487/nxp_semiconductors_sml.jpg)
ucb1500
Manufacturer Part Number
ucb1500
Description
Pci To Ac97 Bridge/host Controller
Manufacturer
NXP Semiconductors
Datasheet
1.UCB1500.pdf
(58 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ucb1500BE
Manufacturer:
PHILIPS/飞利浦
Quantity:
20 000
Philips Semiconductors
9397 750 07443
Product specification
[82]: Power Management Capabilities (read only)
Table 12: Power Management Capabilities register bit description
Read only
Bit
15-11(r)
10(r)
9(r)
8-6(r)
5(r)
4(r)
3(r)
2:0(r)
Description
PME support
This 5-bit field indicates the power states in which the function may assert PME.
Value is set to 11001b if V
D3cold and D0. If V
asserted from D3hot and D0.
The entire setting can be overwritten by BIOS via writing to 6Ah, or an external
EEPROM. If V
reflect the setting of 6Ah, or that loaded from EEPROM.
D2 support
This bit is set to ‘0’ to indicate that function does not support the D2 power
management state. This setting can be overwritten by BIOS via 6Ah, or with the
external EEPROM.
D1 support
This bit is set to ‘0’ to indicate that function does not support the D1 power
management state. This setting can be overwritten by BIOS via 6Ah, or with the
external EEPROM.
Aux_Current
These bits are set to ‘0’ for PCI-PM 1.0 compliance. For PCI-PM 1.1 compliance,
these bits are overwritten by BIOS via 6Ah, or loaded from an external EEPROM
to reflect the 3.3V
DSI
The Device Specific Initialization bit indicates whether special initialization of this
function is required (beyond the standard PCI configuration header) before the
generic class device driver is able to use it. This register is set to ‘0’ to indicate
that it does not require special initialization.
Reserved.
PME Clock
This bit is a ‘0’, indicating that the function does not rely on the presence of the
PCI clock for PME operation.
Version
This register is set to 001b, indicating that this function complies with Rev 1.0 of
the PCI Power Management Interface Specification . These bits can also be
overwritten by BIOS via 6Ah, or loaded from an external EEPROM to 010b for
compliance with PCI-PM 1.1.
Rev. 03 — 7 July 2000
AUX_AV
AUX
AUX_AV
= 0, bit 15 shall always be zero. If V
current requirement.
AUX_AV
= 0, this field is set to 01001b to indicate PME can be
= 1 to indicate PME can be asserted from
PCI to AC97 bridge/host controller
© Philips Electronics N.V. 2000. All rights reserved.
AUX
UCB1500
= 1, bit 15 shall
11 of 58