參數(shù)資料
型號: STPCE1HDC
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 30/87頁
文件大?。?/td> 1356K
代理商: STPCE1HDC
STRAP OPTION
30/87
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Release 1.3 - January 29, 2002
3.1.3. STRAP REGISTER 2 CONFIGURATION
Strap2
Access = 0022h/0023h
Regoffset = 04Ch
7
6
5
4
3
2
1
0
Rsv
MD23
Rsv
MD19
MD18
MD17
MD16
This register defaults to the values sampled on MD[23] and MD[19:16] pins after reset
Bit Number Sampled
Mnemonic
Description
Bits 7-6
Rsv
Reserved
Bit 5
MD23
Reserved
Bit 4
Rsv
Reserved
Bit 3
MD19
Reserved
Bit 2
MD18
Reserved
Bit 1
MD17
This bit, programmed in parallel with MD[4], reflects the value sampled
on
MD[17]
pin and controls the PCI clock output, as given in
Table 3-3
.
Bit 0
MD16
Reserved
Table 3-3. PCI Clock Output
MD[4]
0
1
1
MD[17]
X
0
1
Description
PCI clock output = HCLK / 4
PCI clock output = HCLK / 3
PCI clock output = HCLK / 2
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