RG82845 S L5YQ Intel, RG82845 S L5YQ Datasheet - Page 66
RG82845 S L5YQ
Manufacturer Part Number
RG82845 S L5YQ
Description
Manufacturer
Intel
Datasheet
1.RG82845_S_L5YQ.pdf
(148 pages)
Specifications of RG82845 S L5YQ
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Register Description
3.5.26
66
AGPSTAT—AGP Status Register (Device 0)
Address Offset:
Default Value:
Access:
Size:
This register reports AGP device capability/status.
31:24
23:10
Bit
8:6
2:0
9
5
4
3
Request Queue (RQ). This field contains the maximum number of AGP command requests the
MCH is configured to manage.
1Fh = Allows a maximum of 32 outstanding AGP command requests.
Reserved.
Side Band Addressing Support (SBA). Hardwired to 1 to indicate that the MCH supports side
band addressing.
Reserved.
Greater that 4 GB Support (4G). Hardwired to 0 to indicate that the MCH does not support
addresses greater than 4.
Fast Write Support (FW). Hardwired to 1 to indicate that the MCH supports Fast Writes from the
host to the AGP master.
Reserved.
Data Rate Support (RATE). Hardwired to 111. After reset, the MCH reports its data transfer rate
capability. Bit 0 identifies if AGP device supports 1x data transfer mode, bit 1 identifies if AGP
device supports 2x data transfer mode, bit 2 identifies if AGP device supports 4x data transfer
mode.
111 = 1x, 2x, and 4x data transfer modes are supported by the MCH
Note: The selected data transfer mode applies to both AD bus and SBA bus. It also applies to
Fast Writes if they are enabled.
A4–A7h
1F00_0217h
RO
32 bits
Description
Intel
®
82845 MCH for SDR Datasheet
R
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