FW82801ER S L742 Intel, FW82801ER S L742 Datasheet - Page 447
FW82801ER S L742
Manufacturer Part Number
FW82801ER S L742
Description
Manufacturer
Intel
Datasheet
1.FW82801ER_S_L742.pdf
(671 pages)
Specifications of FW82801ER S L742
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11.1.24
Intel
®
82801EB ICH5 / 82801ER ICH5R Datasheet
Note: This register is R/W to maintain software compatibility and enable parallel ATA functionality
IDE_CONFIG—IDE I/O Configuration Register
(SATA–D31:F2)
Address Offset:
Default Value:
when the PCI functions are combined. These bits have no effect on SATA operation, unless
otherwise noted.
31:24
23:20
19:18
17:16
11:8
Bit
7:4
15
14
13
12
3
Reserved
Scratchpad (SP2). Intel
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
mobile 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
Scratchpad (SP1). ICH5 does not perform any action on these bits.
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
00000000h
–
57h
®
ICH5 does not perform any actions on these bits.
Description
Attribute:
Size:
SATA Controller Registers (D31:F2)
R/W
32 bits
447
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