LU82551QM Intel, LU82551QM Datasheet - Page 67

• Manufacturer Part Number: LU82551QM
• Manufacturer: Intel

Specifications of LU82551QM

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Lead Free Status / RoHS Status: Compliant

9.2.1
9.2.2
Datasheet
Figure 21. Modem PCI Configuration Registers
Table 23. Power Management Control and Status Register
The modem configuration registers define the resources required by the modem function. It is
meaningful in a multifunction card design only. Some of the modem configuration registers are a
reflection of their matched Ethernet registers. The registers’ values are pre-defined by hardware,
initialized by the EEPROM, or configurable through software. The shaded fields are described in
detail in the following subsections.
Modem Configuration ID Register
The Modem Configuration ID field is a Dword register composed of the Device ID and Vendor ID.
It is a read only register and its value is loaded from the EEPROM.
Modem Command Register
The Modem Command field is a 16-bit word register and provides basic control over the modem’s
ability to respond to PCI/CardBus accesses. The Command register’s structure is shown in
23.
15:10
9
8
7
6
5
4
3
2
1
0
Bits
Modem Power Management Capabilities
Reserved
Max_Lat
000000b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
Default
Read Only
Read Only
Read/Write
Read Only
Read/Write
Read Only
Read Only
Read Only
Read Only
Read/Write
Read/Write
Read/Write
Modem Data
Min_Gnt
Reserved. These bits are reserved and should be set to 000000b.
Fast Back-to-Back.
System Error Enable.
Wait Cycle Enable.
Parity Error Enable.
VGA (define).
Memory Write and Invalidate.
Special Cycle.
Master Enable.
Memory Access Enable.
I/O Access Enable.
Reserved
Next Item Ptr
Modem Power Management CSR
Modem Interrupt
Description
Networking Silicon — 82551QM
Capability ID
38h
3Ch
DCh
E0h
Table
61