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W83194BR-645 Schematic ( PDF Datasheet ) - Winbond

Teilenummer W83194BR-645
Beschreibung CLOCK GENERATOR
Hersteller Winbond
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Gesamt 24 Seiten
W83194BR-645 Datasheet, Funktion
www.DataSheet4U.com
W83194BR-645
Data Sheet
WINBOND
CLOCK GENERATOR
FOR
SIS 645/650 CHIPSET
Publication Release Date: April 13, 2005
- I - Revision 2.1






W83194BR-645 Datasheet, Funktion
W83194BR-645
31, 30
9, 10
AGPCLK [0:1] OUT AGP clock outputs for AGP.
ZCLK [0:1] OUT Z clock outputs for chipset.
5.3 I2C Control Interface
PIN PIN NAME TYPE
DESCRIPTION
34
SDATA*
I/O
Serial data of I2C 2-wire control interface, Internal 120kpull-
up.
35
SDCLK*
IN
Serial clock of I2C 2-wire control interface, Internal 120kpull-
up.
5.4 Fixed Frequency Outputs
PIN PIN NAME TYPE
DESCRIPTION
Deciding the reference current for the CPUCLK pairs. The pin
was connected to the precision resistor tied to ground to decide
38
IREF
IN the appropriate current. There are two modes to select different
current via power on trapping the Pin 26 (MULTISEL0). The
table is show as follows.
REF0
OUT 3.3V, 14.318 MHz reference clock output.
2
FS0&
INtd120k
Latched input for FS0 at initial power up for H/W selecting the
output frequency. Internal 120Kpull-down.
REF1
OUT 3.3V, 14.318 MHz reference clock output.
3
FS1&
INtd120k
Latched input for FS1 at initial power up for H/W selecting the
output frequency, Internal 120Kpull-down.
REF2
OUT 3.3V, 14.318 MHz reference clock output.
4
FS2&
INtd120k
Latched input for FS2 at initial power up for H/W selecting the
output frequency. Internal 120Kpull-down.
24_48 MHz OUT 24 MHz or 48 MHz selected by Register.
26
MULTISEL0*
INtp120k
MULTISEL0 at initial power up for H/W selecting the current
multiplier for CPU outputs. Internal 120Kpull-up.
27
48 MHz
OUT 48 MHz output for USB.
-4-

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