Clock Generator - EUROCOM M770CU Service Manual

Clock Generator

CLOCK GENERATOR
P R 1 9 1 3 3 _ 04
2 1 C L K _ B U F _ R E F 1 4
SMBus
Q5 0
MT N 70 0 2Z H S 3
D S
1 0 , 1 1, 2 1 S MB _ C LK
3. 3 V S
D S
1 0 , 1 1, 2 1 S MB _ D A TA
Q4 9
MT N 70 0 2Z H S 3
CPU_SEL_During CK_PEWGD Latch Pinl
3 . 3 V S
P R 2 0 6 * 4 . 7k _ 0 4
P R 2 0 7 1 0 k _0 4
C L K _ V C C 1 C L K _ V C C 2
U 31
1 1 5
V D D _ D OT V D D _ S R C _I / O
5 1 8
V D D _ 2 7 V D D _ C P U _I / O
1 7
V D D _ S R C
2 4
V D D _ C P U
2 9 3
C L K _ B U F _ D O T 96 _ P 2 1
V D D _ R E F D O T _9 6 4
C L K _ B U F _ D O T 96 _ N 2 1
D OT _ 96 #
6
2 7M
7
X O U T 2 7 M_ S S
2 7
XT A L _ OU T
X I N 2 8
XT A L _ I N
1 0
C L K _ S A T A 21
S R C _ 1 / S A T A 1 1
S R C _ 1# / S A T A # C L K _ S A T A # 2 1
1 3
S R C _ 2 C L K _ P C I E _ I C H 2 1
R E F _ 0/ C P U _ S E L 3 0 1 4
R E F _ 0 / C P U _S E L S R C _2 # C L K _ P C I E _ I C H # 21
C L K _S D A T A 3 1
S D A
C L K _S C L K 3 2 1 6 C P U _S T O P # P R 10 1 2 . 2K _ 0 4
3. 3 V S
S C L C P U _ S T OP #
2 2 0
V S S _ D OT C P U _ 1
8 1 9
V S S _ 27 C P U _1 #
9 2 3
V S S _ S A TA C P U _ 0 C L K _ B U F _ B C LK _ P 2 1
1 2 2 2
C L K _ B U F _ B C LK _ N 21
V S S _ S R C C P U _0 #
2 1
V S S _ C P U
C L K _ P W R G D
2 6 2 5
V S S _ R E F C K P W R GD / P D #
3 3
GN D
3 . 3V S
S LG 8 S P 58 5
9L RS31 97
R 5 1 4
10 K _ 0 4
Q4 5 R 5 1 3
4 3 C L K E N # G
MT N 7 0 02 Z H S 3 1M _ 04
C LK _S C LK
P R 19 5 2 . 2k _ 0 4 X5 1 4. 3 1 8 MH z
X I N 2 1 X O U T
3 . 3 V S
P R 19 4 2 . 2k _ 0 4
C 6 2 8 C 6 2 6
C LK _S D A T A
33 P _ 5 0V _ 0 4 33 P _ 5 0V _ 0 4
PIN_ 30 CPU _0 CPU_ 1
R E F _ 0 / C P U _ S E L
0( defau lt) 133 MHz 133M Hz
1( 0.7V- 1.5V ) 100 MHz 100M Hz
CLKGEN POWER
3 . 3 V S
C L K _ V C C 1
L3 4 *H C B 1 6 0 8K F - 12 1 T2 5 _ 32 m i l _ s ho rt
C 4 2 1 C 4 1 5 C 4 34
. 1 U _ 1 6V _0 4 . 1 U _ 16 V _ 0 4 1 U _1 0 V _ 06
0.1uF near the every po wer pin
1. 1 V S _ V T T
C L K _ V C C 2
L 5 5 *H C B 1 6 08 K F - 1 2 1T 2 5 _3 2 m i l _ sh o rt
C 6 1 9 C 4 2 8
V DD_I/ O ca n be
. 1 U _ 1 6V _0 4 1U _ 10 V _ 0 6
r angin g fr om
1 .05V to 3 .3V
0.1uF near th e ev ery power pin
EMI
R E F _ 0 / C P U _S E L
C 6 5 2 *1 0 P _5 0 V _ 04
EMI Capa ctior
3 . 3 V S 1 0, 1 1 , 1 2, 1 3 , 1 4, 2 0 , 2 1, 2 2 , 2 3, 2 4 , 2 5, 2 6 , 2 7, 2 9 , 3 0, 3 1 , 3 2, 3 3 , 3 5, 3 6 , 3 7, 4 2 , 4 3, 4 4 , 4 6
1 . 1 V S _ V T T 4 , 6 , 7 , 19 , 2 0 , 21 , 2 2 , 25 , 2 6 , 27 , 4 1 , 43
Schematic Diagrams
Sheet 2 of 55
Clock Generator
Clock Generator B - 3