RG82845G S L66F Intel, RG82845G S L66F Datasheet - Page 73
RG82845G S L66F
Manufacturer Part Number
RG82845G S L66F
Description
Manufacturer
Intel
Datasheet
1.RG82845G_S_L66F.pdf
(193 pages)
Specifications of RG82845G S L66F
Lead Free Status / RoHS Status
Not Compliant
- Current page: 73 of 193
- Download datasheet (3Mb)
3.5.1.32
Intel
®
82845G/82845GL/82845GV GMCH Datasheet
GMCHCFG—GMCH Configuration Register (Device 0)
Address Offset:
Default Value:
Access:
Size:
15:13
11:10
RO
Bit
9:6
1:0
12
5
4
3
2
Intel Reserved.
Core/PSB Frequency Select (PSBFREQ)—RO. The default value of this bit is set by the strap
assigned to pin PSBSEL and is latched at the rising edge of PWROK.
0 = PSB frequency is 400 MHz (PSBSEL sampled low on PWROK assertion)
1 = PSB frequency is 533 MHz (PSBSEL sampled high on PWROK assertion)
System Memory Frequency Select (SMFREQ)—R/W
00 = Intel Reserved
01 = Intel Reserved
10 = System Memory frequency is set to 133 MHz (SDR133, DDR266)
11 = System Memory frequency is set to 100 MHz (DDR200) (Default)
NOTE:
Intel Reserved.
MDA Present (MDAP). This bit works with the VGA enable bits in the BCTRL1 register of Device 1
to control the routing of processor initiated transactions targeting MDA compatible I/O and memory
address ranges. This bit should not be set if Device 1's VGA enable bit is not set. If Device 1's VGA
enable bit is set, then accesses to I/O address range x3BCh-x3BFh are forwarded to the hub
interface. If the VGA enable bit is not set then accesses to IO address range x3BCh-x3BFh are
treated just like any other I/O accesses. That is, the cycles are forwarded to AGP if the address is
within the corresponding IOBASE and IOLIMIT and ISA enable bit is not set; otherwise, they are
forwarded to the hub interface. MDA resources are:
Memory:
I/O:
Any I/O reference that includes the I/O locations listed above, or their aliases, will be forwarded to
hub interface even if the reference includes I/O locations not listed above.
Refer to the
Intel Reserved.
AGP Mode (AGP/DVO#)—RO. This bit is Read Only and reflects the ADD_DETECT strap value.
This strap bit determines the function of the AGP I/O signal.
0 = 2xDVO
1 = AGP
When the strap is sampled low, this bit will be a 0 and DVO mode will be selected. When the strap is
sampled high, this bit will be a 1 and AGP mode will be selected.
Note that when this bit is set to 0 (DVO mode), Device 1 is disabled (configuration cycles fall-through
to HI) and the Next Pointer field in CAPREG will be hardwired to zeros.
PSB IOQ Depth (IOQD)—RO. This bit is RO and reflects the HA[7]# strap value. It indicates the
depth of the PSB IOQ.
0 = 1 deep
1 = 12 on the bus, 8 on the GMCH
When the strap is sampled low, this bit will be a 0 and the PSB IOQ depth is set to 1. When the strap
is sampled high, this bit will be a 1 and the PSB IOQ depth is set to the maximum (12 on the bus, 8
on the GMCH).
Intel Reserved.
1. When writing a new value to this bit, a warm reset through the Intel
before the bit becomes effective. This must be enforced by BIOS/SW. However, changing this bit
in SW requires a “warm reset”
Chapter 5
0B0000h–0B7FFFh
3B4h, 3B5h, 3B8h, 3B9h, 3BAh, 3BFh
(including ISA address aliases, A[15:10] are not used in decode)
C6–C7h
0C01h
R/W, RO
16 bits
for further information.
Description
1
.
®
ICH4 must be executed
Register Description
73
Related parts for RG82845G S L66F
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Intel
Datasheet:
Part Number:
Description:
Microprocessor: Intel Celeron M Processor 320 and Ultra Low Voltage Intel Celeron M Processor at 600MHz
Manufacturer:
Intel Corporation
Part Number:
Description:
Intel 82550 Fast Ethernet Multifunction PCI/CardBus Controller
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 64 Mbit. Access speed 150 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 100 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
DA28F640J5A-1505 Volt Intel StrataFlash Memory
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
Part Number:
Description:
Intel 6300ESB I/O Controller Hub
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel 82801DB I/O Controller Hub (ICH4), Pb-Free SLI
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel 82801FB I/O Controller Hub (ICH6)
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel Strataflash Memory28F128J3 28F640J3 28F320J3
Manufacturer:
Intel Corporation
Datasheet: