307013-003 Datasheet, PDF (317/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

LAN Controller Registers (B1:D8:F0) (Desktop and Mobile Only)
8.2.2
Bit
Description
Command Unit Status (CUS) — RO.
00 = Idle
7:6 _{01 = Suspended}
10 = LPQ (Low Priority Queue) active
11 = HPQ (High Priority Queue) active
Receive Unit Status (RUS) — RO.
Value
0000b
0001b
5:2
0010b
0011b
0100b
0101b
0110b
0111b
1:0 Reserved
Status
Idle
Suspended
No Resources
Reserved
Ready
Reserved
Reserved
Reserved
Value
1000b
1001b
1010b
1011b
1100b
1101b
1110b
1111b
Status
Reserved
Suspended with no more RBDs
No resources due to no more
RBDs
Reserved
Ready with no RBDs present
Reserved
Reserved
Reserved
SCB_CMD—System Control Block Command Word
Register (LAN Controller—B1:D8:F0)
Offset Address: 02h–03h
Default Value: 0000h
Attribute:
Size:
R/W, WO
16 bits
The processor places commands for the Command and Receive units in this register.
Interrupts are also acknowledged in this register.
Bit
Description
CX Mask (CX_MSK) — R/W.
15 _{0 = Interrupt not masked.}
1 = Disable the generation of a CX interrupt.
FR Mask (FR_MSK) — R/W.
14 _{0 = Interrupt not masked.}
1 = Disable the generation of an FR interrupt.
CNA Mask (CNA_MSK) — R/W.
13 0 = Interrupt not masked.
1 = Disable the generation of a CNA interrupt.
RNR Mask (RNR_MSK) — R/W.
12 _{0 = Interrupt not masked.}
1 = Disable the generation of an RNR interrupt.
ER Mask (ER_MSK) — R/W.
11 _{0 = Interrupt not masked.}
1 = Disable the generation of an ER interrupt.
FCP Mask (FCP_MSK) — R/W.
10 0 = Interrupt not masked.
1 = Disable the generation of an FCP interrupt.
Intel ^® ICH7 Family Datasheet
317