FW82801EB S L73Z Intel, FW82801EB S L73Z Datasheet - Page 429
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FW82801EB S L73Z
Manufacturer Part Number
FW82801EB S L73Z
Description
Manufacturer
Intel
Datasheet
1.FW82801EB_S_L73Z.pdf
(671 pages)
Specifications of FW82801EB S L73Z
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10.1.23
Intel
®
82801EB ICH5 / 82801ER ICH5R Datasheet
IDE_CONFIG—IDE I/O Configuration Register
(IDE—D31:F1)
Address Offset:
Default Value:
31:20
19:18
17:16
11:8
Bit
15
14
13
12
7
6
5
4
3
Reserved
SEC_SIG_MODE — R/W. These bits are used to control mode of the Secondary IDE signal pins for
swap bay support.
If the SRS bit (bit 15, offset D0h of D31:F0) is 1, the reset states of bits 19:18 will be 01
(tri-state) instead of 00 (normal).
00 = Normal (Enabled)
01 = Tri-state (Disabled)
10 = Drive low (Disabled)
11 = Reserved
PRIM_SIG_MODE — R/W. These bits are used to control mode of the Primary IDE signal pins for
swap bay support.
If the PRS bit (bit 14, offset D0h of D31:F0) is 1, the reset states of bits 17:16 will be 01
(tri-state) instead of 00 (normal).
00 = Normal (Enabled)
01 = Tri-state (Disabled)
10 = Drive low (Disabled)
11 = Reserved
Fast Secondary Drive 1 Base Clock (FAST_SCB1) — R/W. This bit is used in conjunction with the
SCT1 bits to enable/disable Ultra ATA/100 timings for the Secondary Slave drive.
0 = Disable Ultra ATA/100 timing for the Secondary Slave drive.
1 = Enable Ultra ATA/100 timing for the Secondary Slave drive (overrides bit 3 in this register).
Fast Secondary Drive 0 Base Clock (FAST_SCB0) — R/W. This bit is used in conjunction with the
SCT0 bits to enable/disable Ultra ATA/100 timings for the Secondary Master drive.
0 = Disable Ultra ATA/100 timing for the Secondary Master drive.
1 = Enable Ultra ATA/100 timing for the Secondary Master drive (overrides bit 2 in this register).
Fast Primary Drive 1 Base Clock (FAST_PCB1) — R/W. This bit is used in conjunction with the
PCT1 bits to enable/disable Ultra ATA/100 timings for the Primary Slave drive.
0 = Disable Ultra ATA/100 timing for the Primary Slave drive.
1 = Enable Ultra ATA/100 timing for the Primary Slave drive (overrides bit 1 in this register).
Fast Primary Drive 0 Base Clock (FAST_PCB0) — R/W. This bit is used in conjunction with the
PCT0 bits to enable/disable Ultra ATA/100 timings for the Primary Master drive.
0 = Disable Ultra ATA/100 timing for the Primary Master drive.
1 = Enable Ultra ATA/100 timing for the Primary Master drive (overrides bit 0 in this register).
Reserved
Secondary Slave Channel Cable Reporting — R/W. BIOS should program this bit to tell the IDE
driver which cable is plugged into the channel.
0 = 40 conductor cable is present.
1 = 80 conductor cable is present.
Secondary Master Channel Cable Reporting — R/W. Same description as bit 7.
Primary Slave Channel Cable Reporting — R/W. Same description as bit 7.
Primary Master Channel Cable Reporting — R/W. Same description as bit 7.
Secondary Drive 1 Base Clock (SCB1) — R/W.
0 = 33 MHz base clock for Ultra ATA timings.
1 = 66 MHz base clock for Ultra ATA timings.
54h
00h
Description
Attribute:
Size:
IDE Controller Registers (D31:F1)
R/W
32 bits
429
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