w83194br-603 Winbond Electronics Corp America, w83194br-603 Datasheet - Page 8

• Manufacturer Part Number: w83194br-603
• Description: Winbond Clock Generator For Intel P4 Springdale Series Chipset
• Manufacturer: Winbond Electronics Corp America

CPU, SRC, 3V66 and PCI Clock Outputs, continued
5.3
5.4
13,14,15,18
PIN
PIN
,19
PIN
12
22
21
32
31
8
9
1
2
Fixed Frequency Outputs
I2C Control Interface
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
PCI_F1
FS4
PCI_F2
PCI0
MODE
PCI [1:5]
SDATA*
SCLK*
REF0
FS1*
REF1
FS0
48MHz
FS3
24_48MHz
SEL24_48#
PIN NAME
PIN NAME
&
PIN NAME
&
&
&
&
IN
IN
IN
IN
IN
IN
TYPE
TYPE
OUT 3.3V PCI free running clock output.
OUT 3.3V PCI free running clock output.
OUT 3.3V PCI clock output.
OUT Low skew (< 250ps) 3.3V PCI clock outputs.
OUT
OUT
OUT
OUT
TYPE
I/OD
td120k
td120k
tp120k
td120k
td120k
td120k
IN
Latched input for FS4 at initial power up for H/W selecting
the output frequency, This is internal 120K pull down.
Latched input for pin 30 at initial power up selecting the
0=3V66 clock output, 1=RESET# control pin. This is internal
120KΩ pull down.
Serial data of I
up resistor.
Serial clock of I
up resistor.
14.318MHz output.
Latched input for FS1 at initial power up for H/W selecting
the output frequency. This is internal 120K pull up.
14.318MHz output.
Latched input for FS0 at initial power up for H/W selecting
the output frequency. This is internal 120K pull down.
48MHz clock output for USB.
Latched input for FS3 at initial power up for H/W selecting
the output frequency. This is internal 120K pull down.
24MHz or 48MHz(default) clock output, In power on reset
period, it is a hardware-latched pin, and it can be R/W by
I2C control after power on reset period. Select by register 5
bit 7.
Latched input for 24MHz or 48MHz select pin. This is
internal 120K pull down default 48MHz. In power on reset
period, it is a hardware-latched pin, and it can be R/W by
I2C control after power on reset period. Select by register 5
bit 7.
W83194BR-603/W83194BG-603
- 4 -
2
2
C 2-wire control interface with internal pull-
C 2-wire control interface with internal pull-
DESCRIPTION
DESCRIPTION
DESCRIPTION