C9707
Clock Generator for VIA VT8371/Athlon (K7) Chipset Systems
Preliminary
Byte 2: PCI Control Register (1=Enable,
0=Stopped)
Byte 5: Register
Bit @Pup
Pin#
-
-
-
-
-
-
46
2
Pin Description
S3 Readback
S2 Readback
S0 Readback
MODE Readback
S1 Readback
Reserved
7
6
5
4
3
2
1
0
0
0
0
0
0
0
1
1
Bit @Pup Pin# Pin Description
7
6
5
4
3
2
1
0
0
1
0
1
1
1
1
1
-
7
-
13
12
11
10
8
Reserved
PCI0
Reserved
PCI5
PCI4
PCI3
REF1
REF0
PCI2
PCI1
Byte 6: Watch dog time out Register
‘1’ selects a watch dog time out stamp
‘0’ de-selects a watch dog time out stamp
Byte 3: SDRAM Control Register (1=Enable,
0=Stopped)
Bit @Pup
Pin#
Pin Description
1 = 1 S time out
1 = 4 S time out
1 = 8 S time out
1 = 16 S time out
1 = 32 S time out
1 = 64 S time out
Reserved
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
-
-
-
-
-
-
-
-
Bit @Pup
Pin#
Pin
Description
7
6
0
0
-
25
Reserved
0 = output 24MHz.
1 = output 48MHz.
48MHz
24_48MHZ
Reserved
SDRAM(8:11)
SDRAM(4:7)
SDRAM(0:3)
5
4
3
2
1
0
1
1
0
1
1
1
26
25
-
Reserved
17,18,20,21
28,29,31,32
34,35,37,38
™
Byte 7: Dial-a-Frequency Register
Bit @Pup
Pin#
Pin Description
™
Byte 4: Dial-a-Frequency Register
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
-
-
-
-
-
-
-
-
R6, MSB
R5
R4
R3
R2
Bit @Pup
Pin#
Pin Description
N7, MSB
N6
N5
N4
N3
N2
N1,
N0, LSB
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
-
-
-
-
-
-
-
-
R1
R0, LSB
Enable I2C N&R
*Note: If more than one time out stamp is selected, the shortest one
will be used by this device.
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571
http://www.imicorp.com
Rev 1.2
4/25/2000
Page 9 of 17
CYPRESS [ CYPRESS ]
