W83194R-37/-58 Winbond Electronics Corp America, W83194R-37/-58 Datasheet - Page 5

• Manufacturer Part Number: W83194R-37/-58
• Description: 100MHz/133MHz Via MVP3, Via Apollo Pro Clock Gen., 3-DIMM, With S.S.T.
• Manufacturer: Winbond Electronics Corp America

5.2 CPU, SDRAM, PCI Clock Outputs, continued
PCICLK 0 / *FS2
PCICLK [ 1:4 ]
5.3 I
SDATA
SDCLK
5.4 Fixed Frequency Outputs
REF0 / CPU3.3#_2.5
REF1 /*SD_SEL#
24MHz / *MODE
48MHz / *FS0
2
SYMBOL
SYMBOL
SYMBOL
C Control Interface
- 5 -
10,11,12,13
PIN
PIN
PIN
23
24
46
25
26
8
2
OUT
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
Latched input for FS2 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
PCI clock during normal operation.
Low skew (< 250ps) PCI clock outputs.
Serial data of I
Serial clock of I
Internal 250kΩ pull-up.
Latched input for CPU3.3#_2.5 at initial power up.
Reference clock during normal operation.
Latched high - Vddq2b = 2.5V
Latched low
Internal 250kΩ pull-up.
Latched input at Power On selects either
CPU(SDSEL=1) or AGP(SD_SEL=0) frequencies for
SDRAM clock outputs.
Internal 250kΩ pull-up.
Latched input for MODE at initial power up. 24MHz
output for super I/O during normal operation.
Internal 250kΩ pull-up.
Latched input for FS0 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks. 48MHz output for USB during normal
operation.
2
2
C 2-wire control interface
- Vddq2b = 3.3V
C 2-wire control interface
Publication Release Date: Sep 1998
FUNCTION
FUNCTION
FUNCTION
Revision 1.0