參數(shù)資料
型號(hào)： UCB1500
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 總線控制器
英文描述： PCI to AC97 bridge/host controller
中文描述： PCI BUS CONTROLLER, PQFP80
封裝： 12 X 12 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-315-1, LQFP-80
文件頁(yè)數(shù)： 14/58頁(yè)
文件大?。?/td> 1001K
代理商： UCB1500
Philips Semiconductors
UCB1500
PCI to AC97 bridge/host controller
Objective specification
Rev. 01 — 4 February 2000
14 of 58
9397 750 06854
Philips Electronics N.V. 2000. All rights reserved.
[05-04]: Command Register
Table 15: Command Register bit description
Bit
Description
15-10
Reserved.
9(r)
Fast Back-to-back Transactions
Always 0, fast back-to-back transactions is not supported.
8
SERR enable
If set, SERR driver is enabled; if 0, SERR is disabled.
7(r)
Address/Data Stepping
Always 0, address/data stepping is not implemented.
6
Parity Error Response
When set, the device must take its normal action when a parity error is detected.
If this bit is 0, the device must ignore any parity errors that it detects and continue
normal operation.
5(r)
VGA Snooping
Always 0, not implemented.
4(r)
Memory Write and Invalidate Command
Always 0, UCB1500 does not generate memory write and invalidate command.
3(r)
Special Cycle Response
Always 0, UCB1500 ignores all special cycles.
2
Bus Master Control
PCI Master access enable; this bit must be enabled to activate UCB1500 DMA
register.
1 = enable.
1(r)
Memory Space Response
Always 0, UCB1500 does not respond to memory space accesses.
0
I/O Space Control
UCB1500 control register I/O space access enable.
1 = enable.
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