w83194br-619 Winbond Electronics Corp America, w83194br-619 Datasheet - Page 8

• Manufacturer Part Number: w83194br-619
• Description: Winbond Clock Generator For Intel P4 Springdale Series Chipset P4 Springdale Series Chipset
• Manufacturer: Winbond Electronics Corp America

5. PIN DESCRIPTION
5.1
5.2
40, 43, 39,
31, 30, 27
BUFFER TYPE SYMBOL
37,36
PIN
PIN
42
26
4
5
7
8
Crystal I/O
CPU, SRC, 3V66, PCI Clock Outputs
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
IN
IN
CPUCLKT [0:1]
CPUCLKC [0:1]
SRCCLKT,
SRCCLKC
3V66_3
VCH
3V66_0, 3V66_1,
3V66_2
PCICLK_F0
FS2
PCICLK7_F1
FS4
OUT
I/OD
OD
I/O
IN
td120k
tp120k
#
&
*
PIN NAME
PIN NAME
&
&
XOUT
XIN
IN
IN
TYPE
TYPE
Input
Latch input pin and internal 120KΩ pull down
Latch input pin and internal 120KΩ pull up
Output
Open Drain
Bi-directional Pin
Bi-directional Pin, Open Drain
Active Low
Internal 120kΩ pull-up
Internal 120kΩ pull-down
OUT
OUT
OUT
OUT
OUT
OUT 3.3V 66MHz output clocks for the chipset and AGP slot.
OUT 3.3V 33MHz PCI clock output.
OUT 3.3V 33MHz PCI clock output.
IN
td120k
td120k
Crystal input with internal loading capacitors (18pF) and
feedback resistors.
Crystal output at 14.318MHz nominally with internal loading
capacitors (18pF).
0.7V Current mode differential clock outputs for CPU and
Chipset.
0.7V Current mode differential clock outputs for Chipset,
100MHz (default) or 200MHz outputs selected by I2C register.
66MHz (default) or 48MHz outputs selected by register byte 3
bit 4 selecting.
Latched input for FS2 at initial power up for H/W selecting the
output frequency clocks. This is internal 120KΩ pull down.
Latched input for FS4 at initial power up for H/W selecting the
output frequency clocks. This is internal 120KΩ pull down.
W83194BR-619/W83194BG-619
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DESCRIPTION
DESCRIPTION
DESCRIPTION