參數(shù)資料
型號(hào): STPCE1DDBC
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 31/87頁
文件大?。?/td> 1356K
代理商: STPCE1DDBC
STRAP OPTION
Release 1.3 - January 29, 2002
31/87
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
3.1.4. HCLK STRAP REGISTER CONFIGURATION
HCLK_Strap
Access = 0022h/0023h
Regoffset = 05Fh
7
6
5
4
3
2
1
0
MD3
MD2
MD26
MD25
MD24
Rsv
This register defaults to the values sampled on MD[3:2] and MD[26:24] pins after reset
Bit Number Sampled
Mnemonic
Description
Bits 7-3
MD[3:2] & [26:24]
These bits reflect the values sampled on
MD[3:2]
and
MD[26:24]
pins
respectively and control the Host clock frequency synthesizer, as given
in
Table 3-4
.
Bits 2-0
Rsv
Reserved
Table 3-4. HCLK Frequency
Bit 7
0
0
0
0
0
0
1
1
Bit 6
0
0
0
0
1
1
0
1
Bit 5
0
0
0
0
0
1
0
0
Bit 4
0
0
1
1
0
1
1
0
Bit 3
0
1
0
1
1
0
1
1
HCLK Frequency
25 MHz
50 MHz
60 MHz
66 MHz
75 MHz
82.5 MHz
90 MHz
100 MHz
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