W83194BR-603 Datasheet, PDF (8/26 Pages) Winbond – Winbond Clock Generator For INTEL P4 Springdale Series Chipset

W83194BR-603/W83194BG-603
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
CPU, SRC, 3V66 and PCI Clock Outputs, continued
PIN
PIN NAME
8
PCI_F1
FS4^&
9
PCI_F2
12 PCI0
MODE^&
13,14,15,18 PCI [1:5]
,19
TYPE
DESCRIPTION
OUT 3.3V PCI free running clock output.
IN_td120k Latched input for FS4 at initial power up for H/W selecting
the output frequency, This is internal 120K pull down.
OUT 3.3V PCI free running clock output.
OUT 3.3V PCI clock output.
IN_td120k 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.
OUT Low skew (< 250ps) 3.3V PCI clock outputs.
5.3 Fixed Frequency Outputs
PIN
PIN NAME
1
REF0
FS1*
2
REF1
FS0^&
22 48MHz
FS3^&
21 24_48MHz
SEL24_48#^&
TYPE
OUT
IN_tp120k
OUT
IN_td120k
OUT
IN_td120k
OUT
IN_td120k
DESCRIPTION
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.
5.4 I2C Control Interface
PIN
PIN NAME
32 SDATA*
31 SCLK*
TYPE
I/OD
IN
DESCRIPTION
Serial data of I²C 2-wire control interface with internal pull-
up resistor.
Serial clock of I²C 2-wire control interface with internal pull-
up resistor.
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