w83195bg-341 Winbond Electronics Corp America, w83195bg-341 Datasheet - Page 8

• Manufacturer Part Number: w83195bg-341
• Description: Winbond Clock Generator For Via P4/kt Series Chipset
• Manufacturer: Winbond Electronics Corp America

CPU, AGP, PCI Clock Outputs, continued
5.3 Fixed Frequency Outputs
14, 15, 17,
PIN
56
20
21
1
PIN
10
11
12
18
8
REF0
FS0*
REF1
VTT_PWRGD#
48MHz
FS3
24_48MHz
FS2
AGP2
PCI_STOP#*
PCI_F
FS1
PCI1
SELSD_DD
PCI2
MULTSEL*
PCI [3:6]
PIN NAME
&
&
PIN NAME
&
CLOCK GEN. FOR VIA P4/KT SERIES CHIPSET
&
IN
IN
IN
TYPE
OUT
OUT
OUT
OUT
IN
IN
IN
IN
TYPE
OUT 3.3V 66MHz clock output.
OUT 3.3V 33MHz clock output.
OUT 3.3V 33MHz clock output.
OUT 3.3V 33MHz clock outputs.
OUT 3.3V 33MHz free running clock output.
IN
tp120k
td120k
td120k
tp120k
td120k
td120k
tp120k
PCI clock stop control pin, This pin is low active. Internal
120kΩ pull up, Selected by Register 1 bit 6= 0 and Register 9
bit 6 = 1, see Page 10 Table 2.
Latched input for FS1 at initial power up for H/W selecting the
output frequency clocks. This is internal 120KΩ pull down.
Latched input at initial power up for DRAM buffer output type
selecting, SELSD_DD= 0 DDR Mode SELSD_DD=1 SDR
Mode, This is internal 120KΩ pull down.
Power on trapping for different current reference. The
reference current is referred for Pin 25 (IREF), see page 5
Table 1. This pin is latched during VTT_PWRGD#. This pin is
internal pull up 120K.
14.318MHz output.
Latched input for FS0 at initial power up for H/W selecting
the output frequency clocks. This is internal 120KΩ pull up.
If SELP4_K7=0 this pin is 14.318MHz output.
If SELP4_K7=1 this pin is Power good input signal comes
from ACPI with low active. This 3.3V input is level sensitive
strobe used to determine FS [3:0] and MULTSEL input are
valid and is ready to sample. This pin is low active.
48MHz clock output.
Latched input for FS3 at initial power up for H/W selecting
the output frequency clocks. This is internal 120KΩ pull
down.
24(default) or 48MHz clock output, select by register 4 bit 7
SEL24
Latched input for FS2 at initial power up for H/W selecting
the output frequency clocks. This is internal 120KΩ pull
down.
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DESCRIPTION
DESCRIPTION