NH82801FBM S L89K Intel, NH82801FBM S L89K Datasheet - Page 612

• Manufacturer Part Number: NH82801FBM S L89K
• Manufacturer: Intel

Specifications of NH82801FBM S L89K

• Lead Free Status / RoHS Status: Compliant

AC ’97 Modem Controller Registers (D30:F3)
17.1.11
17.1.12
612
MBAR—Modem Base Address Register (Modem—D30:F3)
Address Offset:
Default Value:
The Modem function uses PCI Base Address register #1 to request a contiguous block of I/O space
that is to be used for the Modem software interface. The Modem Bus Mastering register space
requires 128 bytes of I/O space. All Modem registers reside in the controller, therefore cycles are
not forwarded over the AC-link to the codec.
SVID—Subsystem Vendor Identification Register
(Modem—D30:F3)
Address Offset:
Default Value:
Lockable:
The SVID register, in combination with the Subsystem ID register, enable the operating
environment to distinguish one audio subsystem from the other(s). This register is implemented as
write-once register. Once a value is written to it, the value can be read back. Any subsequent writes
will have no effect.
This register is not affected by the D3
31:16
15:0
15:7
Bit
6:1
Bit
0
Subsystem Vendor ID — R/WO.
Hardwired to 0’s.
Base Address — R/W. These bits are used in the I/O space decode of the Modem interface
registers. The number of upper bits that a device actually implements depends on how much of the
address space the device will respond to. For the AC ‘97 Modem, the upper 16 bits are hardwired to
0, while bits 15:7 are programmable. This configuration yields a maximum I/O block size of
128 bytes for this base address.
Reserved. Read as 0
Resource Type Indicator (RTE) — RO. Hardwired to 1 indicating a request for I/O space.
14
00000001h
2C
0000h
No
–
–
17h
2Dh
HOT
to D0 transition.
Intel
Description
Description
®
I/O Controller Hub 6 (ICH6) Family Datasheet
Attribute:
Size:
Attribute:
Size:
Power Well:
32 bits
R/WO
16 bits
Core
R/W, RO