參數(shù)資料
型號: CMA8864-04
廠商: Electronic Theatre Controls, Inc.
英文描述: I2C, Mixed Voltage clock Synthesizer with Buffer for PENTIUMTM & II CPU/PCI system
中文描述: I2C和混合帶緩沖區(qū)PENTIUMTM電壓時鐘合成器
文件頁數(shù): 3/9頁
文件大小: 105K
代理商: CMA8864-04
CMEI 3 CMA8864-04
6F, No. 100, Sec. 4, Civil Boulevard, Taipei, Taiwan
TEL: (02)8773-1100 FAX: 886-2-8773-2211
WWW : http://www.cmedia.com.tw
Ver. 1.2
CPU CLOCK FREQUENCY TABLE (in MHz)
SEL2 SEL1 SEL0
1
1
1
1
1
0
1
0
0
1
0
1
0
0
0
0
CPU, SDRAM
66.8
60
75
83.3
68.5
83.3
75
50
PCI
1
0
1
0
1
0
1
0
33.4 (1/2 CPU)
30 (1/2 CPU)
37.5 (1/2 CPU)
33.3 (2/5 CPU)
34.25 (1/2 CPU)
41.65 (1/2 CPU)
30 (2/5 CPU)
25 (1/2 CPU)
I
2
C SERIAL CONTROL
I
2
C Specification
Address assignment
Transfer type
Transfer rate
Data byte format
Address format
7 bit
Slaver / Receiver
100kbits/s (standard mode)
8 bits
A6
A5
A4
1
1
0
No respond
A3
1
A2
0
A1
0
A0
1
R/Ws
0
+8 bits dummy
Command Code
+8 bits dummy
Command Code
General call
SERIAL CONTROL REGISTERS
A)
The serial bits will be read in the following order :
Byte 0
-
Byte 1
-
Bits 7, 6, 5, 4, 3, 2, 1, 0
Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte N
-
Bits 7, 6, 5, 4, 3, 2, 1, 0
B)
The PIN# column lists the affected pin number where application. The values in the @Pup column gives the
state at true power up. Registers are set to the values shown only on the true power up.
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