l-fw322-06-db ETC-unknow, l-fw322-06-db Datasheet - Page 34

• Manufacturer Part Number: l-fw322-06-db
• Description: Phy/link Open Host Controller Interface
• Manufacturer: ETC-unknow

FW322 06 1394a
PCI PHY/Link Open Host Controller Interface
Internal Registers
Power Management Capabilities Register
The Power Management Capabilities register indicates the capabilities of the FW322 related to PCI power man-
agement. The default value of this register is dependent on the state of the VAUX_PRESENT input pin. If
VAUX_PRESENT is asserted when the FW322 comes out of powerup reset, then the default value of this register
will be FFC2h. If the VAUX_PRESENT input pin is deasserted when the FW322 comes out of powerup reset, then
the default value of this register will be 7E02h. In addition, the default value of this register can be selectively pro-
grammed by the serial EEPROM. Note, however, that if VAUX_PRESENT is deasserted, then the D3cold and
AUX_PWR fields will both be set to 0h regardless of the serial EEPROM settings.
Offset:
Default:
Type:
Reference:
Table 16. Power Management Capabilities Register Description
34
34
8:6
2:0
Bit
15
14
13
12
10
11
9
5
4
3
PME_D3COLD
D2_SUPPORT
D1_SUPPORT
PM_VERSION
PME_D3HOT
46h
FFC2h (if VAUX_PRESENT = 1)
7E02h (if VAUX_PRESENT = 0)
Read only
PCI Bus Power Management Interface Specification, Rev. 1.1, Section 3.2.3 and 1394 Open Host
Controller Interface Specification, Rev. 1.1, Section A.3.8.3
Field Name
AUX_PWR
PME_CLK
Reserved
PME_D2
PME_D1
PME_D0
DSI
(continued)
Type
R
R
R
R
R
R
R
R
R
R
R
R
PME Support from D3cold. Indicates whether the FW322 can
generate a PME event while in the D3cold state (see description
above for default setting).
PME Support from D3hot. Set to 1, indicating that the FW322 can
generate a PME event in the D3hot state.
PME Support from D2. Set to 1, indicating that the FW322 can
generate a PME in D2.
PME Support from D1. Set to 1, indicating that the FW322 can
generate a PME in D1.
PME Support from D0. Set to 1, indicating that the FW322 can
generate a PME in D0.
D2 Support. This bit returns a 1 when read, indicating that the FW322
supports the D2 power state.
D1 Support. This bit returns a 1 when read, indicating that the FW322
supports the D1 power state.
Auxiliary Power Source. This field reports the Vaux power require-
ments for the Open HCI function (see description above for default
setting).
Device-Specific Initialization. This bit returns 0 when read, indi-
cating that the FW322 does not require special initialization beyond
the standard PCI configuration header before a generic class driver is
able to use it.
Reserved. Bit returns 0 when read.
PME Clock. This bit returns 0 when read, indicating that no host bus
clock is required for the FW322 to generate PME.
Power Management Version. This field returns 010b when read, indi-
cating that the FW322 is compatible with the registers described in the
PCI Power Management Interface Specification, Rev.1.1.
Description
Data Sheet, Rev. 1
December 2005
Agere Systems Inc.