w83195bg-120 Winbond Electronics Corp America, w83195bg-120 Datasheet - Page 9

• Manufacturer Part Number: w83195bg-120
• Description: Winbond Clock Generator W83195br-120/w83195bg-120 For Intel 915/945 Chipset
• Manufacturer: Winbond Electronics Corp America

5.3
5.4
5.5
26,27
14,15
PIN
PIN
PIN
52
11
12
46
47
39
53
16
Fixed Frequency Outputs
I2C Control Interface
Power Management Pins
*SDATA
*SCLK
REF
&
24_48MHz
&
48MHz
SRCT/C
DOTT/C
IREF
RESET#
VTT_PWRGD#
PD
FS2
SEL24_48#
PIN NAME
PIN NAME
PIN NAME
TYPE
IN
IN
IN
I/OD
TYPE
TYPE
OUT
OUT
OUT
OUT
OUT
OUT
IN
OD
IN
td120k
td120k
td120k
Serial data of I
resistor.
Serial clock of I
resistor
Deciding the reference current for the differential pairs. The
pin was connected to the precision resistor tied to ground to
decide the appropriate current; 475 ohm is the standard
value.
250mS low level system reset signal when Watchdog Timer
times out. Application circuit must add external pull high.
Power good Latched input signal comes from ACPI with low
active. This 3.3V input is level sensitive strobe used to
determine FS [2:0] input are valid and is ready to sample.
This pin is low active.
High active input pin used to power down the device into a
low power state. The internal clocks are disabled and the
VCO and the crystal oscillator are stopped. This pin has
internal 120KΩ pull down
3.3V REF 14.318 Mhz clock output.
Latched input for FS2 at initial power up for H/W selecting
the output frequency, This pin has 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 pin has
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.
48MHz clock output for USB.
0.7V current mode 96MHz differential clock outputs for
DOT
W83195BR-120/W83195BG-120
0.7V current mode 100MHz differential clock outputs
for S-ATA
- 5 -
2
2
C 2-wire control interface with internal pull-up
C 2-wire control interface with internal pull-up
DESCRIPTION
DESCRIPTION
DESCRIPTION
Publication Release Date: January 2006
Revision 0.61