W83195BR-25 데이터 시트보기 (PDF) - Winbond
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W83195BR-25 Datasheet PDF : 18 Pages
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W83195BR-25
PRELIMINARY
6. SERIAL CONTROL REGISTERS
The Pin column lists the affected pin number and the @PowerUp column gives the state at true
power up. Registers are set to the values shown only on true power up. "Command Code" byte and
"Byte Count" byte must be sent following the acknowledge of the Address Byte. Although the data
(bits) in these two bytes are considered "don't care", they must be sent and will be acknowledge.
After that, the below described sequence (Register 0, Register 1, Register 2, ....) will be valid and
acknowledged.
Frequency Table Setting by I2C (SEL5 ~ SEL0)
SSEL5 SSEL4 SSEL3 SSEL2 SSEL1 SSEL0
000000
000001
000010
000011
000100
000101
000110
000111
001000
001001
001010
001011
001100
001101
001110
001111
010000
010001
010010
010011
010100
010101
010110
010111
011000
011001
011010
011011
011100
011101
CPU
(MHz)
55.00
60.00
66.80
68.33
70.00
72.00
75.00
77.00
83.30
90.00
100.30
103.00
112.50
115.00
120.00
125.00
128.00
130.00
133.70
137.00
140.00
145.00
150.00
153.33
125.00
130.00
133.70
137.00
140.00
145.00
SDRAM
(MHz)
82.50
90.00
100.20
102.50
105.00
108.00
112.50
115.50
83.30
90.00
100.30
103.00
112.50
115.00
120.00
125.00
128.00
130.00
133.70
137.00
140.00
145.00
150.00
153.33
93.75
97.50
100.28
102.75
105.00
108.75
3V66
(MHz)
55.00
60.00
66.80
68.33
70.00
72.00
75.00
77.00
55.53
60.00
66.87
68.67
75.00
76.67
80.00
83.33
64.00
65.00
66.85
68.50
70.00
72.50
75.00
76.67
62.50
65.00
66.85
68.50
70.00
72.50
PCI(MHz)
27.50
30.00
33.40
34.17
35.00
36.00
37.50
38.50
27.77
30.00
33.43
34.33
37.50
38.33
40.00
41.67
32.00
32.50
33.43
34.25
35.00
36.25
37.50
38.33
31.25
32.50
33.43
34.25
35.00
36.25
IOAPIC
(MHz)
13.75
15.00
16.70
17.08
17.50
18.00
18.75
19.25
13.88
15.00
16.72
17.17
18.75
19.17
20.00
20.83
16.00
16.25
16.71
17.13
17.50
18.13
18.75
19.17
15.63
16.25
16.71
17.13
17.50
18.13
Publication Release Date: May 2000
-6-
Revision 0.52
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