CMA8864-04 Datasheet, PDF (3/9 Pages) List of Unclassifed Manufacturers – I2C, Mixed Voltage clock Synthesizer with Buffer for PENTIUMTM & II CPU/PCI system

Ver. 1.2
6F, No. 100, Sec. 4, Civil Boulevard, Taipei, Taiwan
TEL: [phone] FAX: [phone]
WWW : http://www.cmedia.com.tw
CPU CLOCK FREQUENCY TABLE (in MHz)
SEL2 SEL1 SEL0
11
1
11
0
10
1
10
0
01
1
01
0
00
1
00
0
CPU, SDRAM
66.8
60
75
83.3
68.5
83.3
75
50
PCI
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)
I²C SERIAL CONTROL
I²C Specification
Address assignment
Transfer type
Transfer rate
Data byte format
Address format
General call
7 bit
Slaver / Receiver
100kbits/s (standard mode)
8 bits
A6 A5 A4 A3 A2 A1
110100
No respond
A0 R/Ws +8 bits dummy +8 bits dummy
1 0 ^{Command Code Command Code}
SERIAL CONTROL REGISTERS
A) The serial bits will be read in the following order :
Byte 0 - Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 1 - 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.
CMEI
3
CMA8864-04