w83195bg-120 Winbond Electronics Corp America, w83195bg-120 Datasheet - Page 8

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

5. PIN DESCRIPTION
5.1
5.2
45,44,42,41
17,18,21,22
,23,24,31,3
54,55,2,3 PCI [0:3]
0,33,32,
BUFFER TYPE SYMBOL
36,35
PIN
PIN
50
49
7
8
9
Crystal I/O
CPU, SRC, and PCI_E, PCI, Clock Outputs
IN
IN
CPUT [0:1]
CPUC [0:1]
PCIET [0:5]
PCIEC [0:5]
PCIET/C 5
CPUCLKT/C_ITP
PCI_F0
&
PCI_F1
&
PCI_F2
*FS1
OUT
I/OD
XIN
XOUT
OD
ITP_EN
FS0
IN
tp120k
td120k
&
#
*
PIN NAME
PIN NAME
IN
IN
IN
Input
Latched input at power up, internal 120kΩ pull up.
Latched input at power up, internal 120kΩ pull down.
Output
Open Drain
Bi-directional Pin, Open Drain.
Active Low
Internal 120kΩ pull-up
Internal 120 kΩ pull-down
TYPE
TYPE
OUT
OUT
OUT
OUT
OUT 3.3V free running PCI clock output.
OUT 3.3V free running PCI clock output.
OUT 3.3V free running PCI clock output.
OUT Low skew (< 500ps) 3.3V PCI clock outputs
OUT
td120k
td120k
tp120k
IN
Low skew (<125ps) 0.7V Current mode differential clock
outputs for host frequencies of CPU
Low skew (<125ps) 0.7V Current mode differential clock
outputs for PCI-Express
0.7V Current mode differential clock outputs for PCI-Express
(default), select by ITP_EN pin =0.
0.7V Current mode differential clock outputs for host
frequency, select by ITP_EN pin =1.
Latched input for at initial power up to select
CPUCLK_ITP/PCIEX5 output.
1: CPUCLK clock output.
0: PCIEX clock output.
down.
Latched input for FS0 at initial power up for H/W selecting
the output frequency. This pin has internal 120K pull down.
Latched input for FS1 at initial power up for H/W selecting
the output frequency. This pin has internal 120K pull up.
Crystal input with internal loading capacitors (18pF) and
feedback resistors.
Crystal output at 14.318MHz nominally with internal loading
capacitors (18pF).
W83195BR-120/W83195BG-120
-4-
DESCRIPTION
DESCRIPTION
DESCRIPTION
This pin has internal 120K pull