參數(shù)資料
型號: STPCI2HDYI
廠商: STMICROELECTRONICS
元件分類: 外設(shè)及接口
英文描述: MULTIFUNCTION PERIPHERAL, PBGA516
封裝: PLASTIC, BGA-516
文件頁數(shù): 45/109頁
文件大?。?/td> 2430K
代理商: STPCI2HDYI
STPC ATLAS
40/109
Issue 1.1 - March 23, 2004
3.1.3. HCLK PLL STRAP REGISTER
This register is read only.
HCLK_STRAP0
Access = 0022h/0023h
Regoffset =05Fh
76543210
RSV
MD[26]
MD[25]
MD[24]
RSV
This register defaults to the values sampled on the MD pins after reset
Bit Number Sampled
Mnemonic
Description
Bits 7-6
Rsv
These bits are fixed to ‘0’
Bits 5-3
MD[26:24]
These pins reflect the values sampled on MD[26:24] pins respectively
and control the Host clock frequency synthesizer as shown in Table 3-1
Bits 2-0
Rsv
Reserved
Table 3-1. HCLK Frequency Configuration
MD[3]
MD[2]
MD[26]
MD[25]
MD[24]
HCLK Speed
00
000
25 MHz
00
001
50 MHz
00
010
60 MHz
00
011
66 MHz
All other settings are reserved
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