參數(shù)資料
型號(hào)： RG82845
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
文件頁數(shù)： 22/157頁
文件大?。?/td> 1407K
代理商： RG82845
Intel
82845MP/82845MZ Chipset-Mobile (MCH-M)
118
Datasheet
250687-002
R
AGP PIPE# or SBA[7:0] protocol transactions to DRAM do not get snooped and are, therefore, not
coherent with the processor caches. AGP FRAME# protocol transactions to DRAM are snooped. AGP
PIPE# and SBA[7:0] accesses to and from the hub interface are not supported. AGP FRAME# access
from an AGP master to the hub interface are also not supported. Only AGP FRAME# memory writes
from the hub interface are supported.
5.3.1.
AGP Target Operations
The MCH-M supports AGP cycles targeting main memory only. The MCH-M supports interleaved AGP
PIPE#] and AGP FRAME# transactions, or AGP SBA[7:0] and AGP FRAME# transactions.
Table 29. AGP Commands Supported by the MCH-M When Acting as an AGP Target
MCH-M Host Bridge
AGP
Command
C/BE[3:0]#
Encoding
Cycle Destination
Response as PCIx Target
Read
0000
Main Memory
Low Priority Read
0000
The Hub interface
Complete with random data; does not go to the hub
interface
Hi-Priority Read
0001
Main Memory
High Priority Read
0000
The Hub interface
Complete with random data; does not go to the hub
interface
Reserved
0010
N/A
No Response
Reserved
0011
N/A
No Response
Write
0100
Main Memory
Low Priority Write
0100
The Hub interface
Cycle goes to DRAM with BE’s inactive; does not go to
the hub interface
Hi-Priority Write
0101
Main Memory
High Priority Write
0101
The Hub interface
Cycle goes to DRAM with BE’s inactive; does not go to
the hub interface
Reserved
0110
N/A
No Response
Reserved
0111
N/A
No Response
Long Read
1000
Main Memory
Low Priority Read
The Hub interface
Complete with random data; does not go to the hub
interface
Hi-Priority Long
Read
1001
Main Memory
High Priority Read
The Hub interface
Complete with random data; does not go to the hub
interface
Flush
1010
MCH-M
Complete with QW of Random Data
Reserved
1011
N/A
No Response
Fence
1100
MCH-M
No Response - Flag inserted in MCH-M request queue
Reserved
1101
N/A
No Response
Reserved
1110
N/A
No Response
相關(guān)PDF資料
PDF描述
RG82845MP Controller Miscellaneous - Datasheet Reference
RG82845MZ Controller Miscellaneous - Datasheet Reference
RG82870P2 Controller Miscellaneous - Datasheet Reference
RH5RE36AA-T1-FA 3.6 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3
RH5RE56AA-T1-FA 5.6 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3
相關(guān)代理商/技術(shù)參數(shù)
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RG82845E 制造商:Rochester Electronics LLC 功能描述:- Bulk
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