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| 型號(hào)： | FW82815 |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項(xiàng)-數(shù)據(jù)表參考 |
| 文件頁(yè)數(shù)： | 26/172頁(yè) |
| 文件大小： | 795K |
| 代理商： | FW82815 |
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82815 GMCH
R
26
Datasheet
2.3.4.
AGP Clocking Signals (Strobes)
Signal Name
Type
Description
AD_STB0
I/O
s/t/s
AGP
AD Bus Strobe-0.
During 2X Operation.
During 2X operation, this signal provides timing for the
G_AD[15:0] and G_C/BE[1:0]# signals. The agent that is providing the data will
drive this signal.
During 4X Operation.
During 4X operation, this is one-half of a differential strobe
pair that provides timing information for the G_AD[15:0] and G_C/BE[1:0]# signals.
AD_STB0#
I/O
s/t/s
AGP
AD Bus Strobe-0 Compliment.
During 2X Operation.
During 2X operation, this signal is not used.
During 4X Operation.
During 4X operation, this is one-half of a differential strobe
pair that provides timing information for the G_AD[15:0] and G_C/BE[1:0]# signals.
The agent that is providing the data will drive this signal.
AD_STB1
I/O
s/t/s
AGP
AD Bus Strobe-1.
During 2X Operation.
During 2X operation, this signal provides timing for the
G_AD[16:31] and G_C/BE[2:3]# signals. The agent that is providing the data drives
this signal.
During 4X Operation.
During 4X operation, this is one-half of a differential strobe
pair that provides timing information for the G_AD[16:31] and G_C/BE[2:3]# signals.
The agent that is providing the data drives this signal.
AD_STB1#
I/O
s/t/s
AGP
AD Bus Strobe-1 Compliment.
During 2X Operation.
During 2X operation, this signal is not used
During 4X Operation.
During 4X operation, this is one-half of a differential strobe
pair that provides timing information for the G_AD[16:31] and G_C/BE[2:3]# signals.
The agent that is providing the data drives this signal.
SB_STB
I
AGP
SBA Bus Strobe.
During 2X Operation.
During 2X operation, this signal provides timing for the SBA
bus signals. The agent that is driving the SBA bus drives this signal.
During 4X Operation.
During 4X operation, this is one-half of a differential strobe
pair that provides timing information for the SBA bus signals. The agent that is
driving the SBA bus drives this signal.
SB_STB#
I
AGP
SBA Bus Strobe Compliment.
During 2X Operation.
During 2X operation, this signal is not used.
During 4X Operation.
During 4X operation, this is one-half of a differential strobe
pair that provides timing information for the SBA bus signals. The agent that is
driving the SBA bus drives this signal.
GRCOMP
O
AGP RCOMP.
Used to calibrate AGP I/O buffers. This pin should be connected to a
40 ohm pull down resistor tied to VSS.
AGPREF
I
AGP Reference.
Reference voltage input for the AGP interface. AGPREF should
be 0.4*VDD
AGP
when VDD is 3.3V, or 0.5* VDD
AGP
when VDD is 1.5V.
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