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... the analog plus comp
a
TM
EXAR Corporation 48720 Kato Road, Fremont, CA 94538 Phone (510)-668-7000, Fax (510)-668-7030
PRELIMINARY
19
XRD9827REF
B
XRD9827 REFERENCE BOARD
B
23Thursday, July 23, 1998
H:\PROJECT\ORCADWIN\9827\9827REFB.DSN
Title
Size Document Number Rev
Date: Sheet
of
DVDD
DVDD
DVDD
DVDD
DVDD
DGND
DGND
DGND
DGND
DGND
ACK
RST
STROBE
RCLK
D7
WCLK1
D3
S1
D6
S0
D5
D1
D2
D0
SP
WEN
CISCLK
BLED
RLED
GLED
DB6/SDATA
WCLK2
ADCCLK
DB7/LD
DB5/SCLK
D4
AUTOFD
S2
SYNC
D4
D3
D2
D1
D0
D5
D6
D7
S1
S0
SP_PB
S2
R5 33
R6 33
R7 33
U5
Oscillator
NC
1
GND
2
OUT
3
V+
4
R19 33
R20 33
R21 33
R4 33
R23 33
C14
10uF
C15
0.1uF
C16
0.1uF
C17
0.01uF
C18
0.01uF
R9 2.2K
R10 2.2K
R11 2.2K
R12 2.2K
R13 2.2K
R14 2.2K
R15 2.2K
R16 2.2K
R17 2.2K
R18 2.2K
C19
0.01uF
C20
0.01uF
C13
0.1uF
C12
1uF
JP2
HEADER 3
1
2
3
S1
SW DIP-12
1
2
3
4
5
6
7
8
9
18
17
16
15
14
1312
11
10
19
20
21
22
23
24
R8 2.2K
MACH435
U4
MACH435
DVDD1
2
DVDD2
21
DVDD3
42
DVDD4
44
DVDD5
63
DVDD6
84
DGND1
1
DGND2
11
DGND3
22
DGND4
32
DGND5
43
DGND6
53
DGND7
64
DGND8
74
CLK0
20
CLK1
23
I1
41
CLK2
62
CLK3
65
I2
83
IO0
3
IO1
4
IO2
5
IO3
6
IO4
7
IO5
8
IO6
9
IO7
10
IO8
12
IO9
13
IO10
14
IO11
15
IO12
16
IO13
17
IO14
18
IO15
19
IO16
24
IO17
25
IO18
26
IO19
27
IO20
28
IO21
29
IO22
30
IO23
31
IO24
33
IO25
34
IO26
35
IO27
36
IO28
37
IO29
38
IO30
39
IO31
40
IO39
52
IO38
51
IO37
50
IO36
49
IO35
48
IO34
47
IO33
46
IO32
45
IO47
61
IO46
60
IO45
59
IO44
58
IO43
57
IO42
56
IO41
55
IO40
54
IO55
73
IO54
72
IO53
71
IO52
70
IO51
69
IO50
68
IO49
67
IO48
66
IO63
82
IO62
81
IO61
80
IO60
79
IO59
78
IO58
77
IO57
76
IO56
75
R22 33