W83194R-KX Datasheet, PDF (3/13 Pages) Winbond – 133MHZ 3-DIMM K7 CLOCK

Vddq3
1
CPU_STOP#/REF0
2
Vss
3
Xin
4
Xout
5
Vddq3
6
PCICLK0/MODE*
7
PCICLK1/FS1*
8
Vss
9
PCICLK2
10
PCICLK3
11
PCICLK4
12
PCICLK5
13
Vddq3
14
BUFFER IN
15
Vss
16
SDRAM11
17
SDRAM10
18
Vddq3
19
SDRAM 9
20
SDRAM 8
21
Vss
22
SDATA*
23
SDCLK*
24
W83194R-KX
PRELIMINARY
48
REF1/FS0*
47
Vss
46
CPUT_CS
45
Vss
44
CPUC0
43
CPUT0
42
VddQ2
41
PD#
40
SDRAM12
39
Vss
38
SDRAM 0
37
SDRAM 1
36
Vddq3
35
SDRAM 2
34
SDRAM 3
33
Vss
32
SDRAM 4
31
SDRAM 5
30
Vddq3
29
SDRAM 6
28
SDRAM 7
27
Vddq3
26
48MHz/FS2*
25
24_48MHz/FS3*
5.0 PIN DESCRIPTION
IN - Input
OUT - Output
I/O - Bi-directional Pin
# - Active Low
* - Internal 250kΩ pull-up
5.1 Crystal I/O
SYMBOL
Xin
Xout
PIN
I/O
FUNCTION
4
IN Crystal input with internal loading capacitors and
feedback resistors.
5
OUT Crystal output at 14.318MHz nominally.
5.2 CPU, SDRAM, PCI, IOAPIC Clock Outputs
SYMBOL
CPUT_CS
CPU_C0
CPU_T0
PIN
I/O
FUNCTION
46
OD CPU_C0 and CPU_T0 are the differential open drain
44
CPU clocks for K7. CPUT_CS is the open drain pin
43
for the chipset. It has the same phase relationship as
CPU_T0.
Publication Release Date: Nov. 1999
-3-
Revision 0.35