Table of Contents
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Schematic Diagrams
COM Port, Ext USB Con.
Sheet 13 of 21
COM Port, Ext USB
Con.
B - 14 COM Port, Ext USB Con.
CO M POR T
R 9 8
*1 0 mi l _s h ort _0 4
C L K _S I O4 8 2
3 . 3 V
OS C 1
3 . 3 V
A V C C
3
2
OU T
G N D
4
1
V C C
OE
U 9
* D S O7 5 1S V _4 8 MH z
1
4 8
V S S
A V C C
2
4 7
V S T B Y
C L K I N
A V S S
D C D #
3
4 6
A V S S
D C D # / G P I O2 1 / C I R 1 T X
A V S S
D S R #
4
4 5
C L K R U N #
R 9 7
10 0 _1 % _ 04
D S R # / GP I O 22 / C I R 1 R X
C L K R U N # / GP I O 20
R XD
LP C P D #
5
4 4
R 9 6
4. 7 K _ 04
3 . 3 V
R TS #
6
S I N / C I R 0T X / GP I O 23
L P C P D # / GP I O 17
4 3
I N T _S E R I R Q
2, 3 , 1 0
R TS # / C I R 0 R X / GP I O 24
S E R I R Q
T X D
7
4 2
S O U T / W U I N TR # / GP I O2 5
L P C R S T#
P C I _ R S T# 2 , 8
C TS #
8
4 1
L P C _A D 3 2 , 3 , 1 0
C TS # / G P I O2 6 / E D 1
L A D 3
R I #
9
4 0
L P C _A D 2 2 , 3 , 1 0
R I # / G P I O2 7 / E D 0
L A D 2
D TR #
10
3 9
L P C _A D 1 2 , 3 , 1 0
11
D TR # / G P I O3 0 / B A D D R
L A D 1
3 8
L P C _A D 0 2 , 3 , 1 0
F I R R X / GP I O 31
L A D 0
12
3 7
F I R TX / G P I O3 2
LF R A ME #
L P C _F R A ME # 2 , 3, 1 0
13
3 6
3 . 3 V
V S S
V C C
14
3 5
P C L K _ K B C 2 , 3
F I R R X 2( B W )/ GP I O 33
LP C C L K
15
3 4
16
V C C
V S S
3 3
L D R Q#
R 9 1
4. 7 K _ 04
E R R # / GP I O 34
L D R Q#
3 . 3 V
17
3 2
S L C T / G P I O3 5
P E / GP I O 16
18
3 1
S T B # / GP I O 00
B U S Y / GP I O 15
19
3 0
P D 0 / G P I O0 1
A C K # / GP I O 14
20
2 9
21
P D 1 / G P I O0 2
S L I N # / GP I O 13
2 8
P D 2 / G P I O0 3
A F D # / GP I O 12
22
2 7
P D 3 / G P I O0 4
I N I T # / GP I O 11
23
2 6
P D 4 / G P I O0 5
P D 7 / GP I O 10
24
2 5
P D 5 / G P I O0 6
P D 6 / GP I O 07
I T 8 7 09 E
H 2 8
H 23
H 3 7
H 3 2
H 3 1
H 2 7
H 36
C 2 37 B 3 1 5D 14 6
C 23 7 B 3 15 D 1 4 6
C 2 37 B 3 1 5D 14 6
C 2 3 7 B 31 5 D 1 4 6
C 2 3 7B 3 1 5 D 1 46
C 2 37 B 3 1 5D 14 6
C 23 7 B 3 15 D 1 4 6
H 8
H 10
H 9
H 6
H 1 1
H 2 9
H 41
C 9 1D 91
C 91 D 91
C 9 1D 9 1
C 6 7 D 6 7 N
C 6 7 D 6 7N
C 7 9D 79
C 79 D 79
H 1
H 2
H 3
H 7
H 4 5
H 4 4
C 1 58 D 1 5 8
C 15 8 D 1 5 8
C 1 58 D 15 8
C 1 5 8 D 1 58
C 1 5 8D 15 8
C 1 58 D 1 5 8
H 2 1
H 2 2
H 7 _5 B 5 _ 0D 3_ 7
H 7 _ 5B 5 _ 0 D 3 _7
M 1
M2
M - MA R K 1
M-M A R K 1
H DD cab le ? ? ? ?
5 V
C 1 86
U 1 6
0 . 1 u _1 6 V _ Y 5 V _0 4
28
2 7
C 1+
V +
C 18 8
C 18 7
C L K _ R U N #
0 . 1 u_ 1 0V _ X 7 R _ 04
24
3
0 . 1 u_ 1 0 V _X 7 R _ 0 4
C 1-
V -
C 1 74
1
C 2+
C 17 1
0. 1 u _1 0 V _ X7 R _ 0 4
0 . 1 u_ 1 0V _ X 7 R _ 04
2
C 2-
T X D
14
9
T X D 0
T 1 I N
T 1 OU T
R T S #
13
1 0
R TS 0 #
T 2 I N
T 2 OU T
D T R #
12
1 1
D TR 0 #
T 3 I N
T 3 OU T
20
R 2O U T B
D S R #
19
4
D S R 0 #
R 1O U T
R 1 I N
R I #
R I 0#
18
5
R 2O U T
R 2 I N
C T S #
17
6
C TS 0 #
R X D
16
R 3O U T
R 3 I N
7
R XD 0
R 4O U T
R 4 I N
2
U S B _ P N 3
D C D #
15
8
D C D 0 #
R 5O U T
R 5 I N
2
U S B _ P P 3
3 . 3 V S
R 1 7 5
1 0 0K _ 0 4
23
F O R C E ON
22
/ F O R C E OF F
2 5
GN D
21
/ I N V A LI D
U SB3 ? ? ? ,? ? ? ? ? ? ?
TI / M A X3 2 4 3C D B R
R 242 ,R24 3 ? U21 ? ? ? ? ? co -lay out
3
E C _U S B 3 _C TR L#
2
U S B _ P N 3
U S B _ P N 3 _ R
S N74 CB3Q 300 APWR ?SN 74C B3Q3 306 APWR
H 26
C 23 7 B 31 5 D 1 4 6
H 5
H 4
H 1 3
H 33
2
9
2
9
2
9
2
9
2
3
8
3
8
3
8
3
8
3
4
1
7
4
1
7
4
1
7
4
1
7
4
5
6
5
6
5
6
5
6
5
M TH 3 15 D 1 1 1
M TH 31 5 D 1 1 1
MT H 3 1 5 D 1 11
MT H 3 1 5D 11 1
M T H 3 15 D 1 1 1
H 2 4
H 2 5
H 3 0
H 43
2
9
2
9
2
9
2
9
2
H 39
3
8
3
8
3
8
3
8
3
C 79 D 7 9
4
1
7
4
1
7
4
1
7
4
1
7
4
5
6
5
6
5
6
5
6
5
M TH 3 15 D 1 1 1
M TH 31 5 D 1 1 1
MT H 3 1 5 D 1 11
MT H 3 1 5D 11 1
M T H 3 15 D 1 1 1
H 1 6
H 20
H 1 7
H 1 8
H 19
C 2 3 6D 1 10
C 23 6 D 1 1 0
C 2 36 D 11 0
C 2 3 6 D 1 10
C 23 6 D 1 1 0
M 3
M4
M 5
M6
M7
M8
M -MA R K 1
M-M A R K 1
M -MA R K 1
M-M A R K 1
M-MA R K 1
M-M A R K 1
9805 09
Add
3 . 3 V
A V C C
L 13
H C B 1 00 5 K F -1 21 T 2 0
C 10 1
C 1 0 2
1 00 0 p_ 5 0 V _X 7 R _ 0 4
0. 1 u _ 10 V _ X7 R _0 4
R 1 00
5 6 0_ 0 4
A V S S
J _ C O MP OR T1
T X D 0
1
R T S 0#
D T R 0 #
2
3
D S R 0 #
4
R I 0 #
5
C T S 0#
6
R X D 0
D C D 0#
7
8
U S B V C C 1
9
1 0
1 1
U S B V C C 1
R 2 4 2
*0 _ 0 4
U S B _ P N 3 _R
1 2
1 3
R 2 4 3
*0 _ 0 4
U S B _ P P 3_ R
1 4
1 5
980 506
C 1 5
1 6
Add "*"
0 . 0 1u _ 5 0V _ X 7R _ 04
8 8 26 6 - 1 60 0 1
9 805 08
c han ge V DD3
V D D 3
U 2 1
1
8
1 O E #
V C C
2
7
1 A
2 OE #
3
6
U S B _ P P 3 _ R
1 B
2 B
4
5
U S B _P P 3 2
G N D
2 A
S N 74 C B 3Q 33 0 6 A P W R
98 0506
Ch ange fo otp rint to M-T SSO P8
H 15
H 1 2
H 1 4
9
2
9
2
9
8
3
8
3
8
1
7
4
1
7
4
1
7
6
5
6
5
6
M TH 31 5 D 1 1 1
MT H 3 1 5 D 1 11
H 38
H 4 0
H 4 2
9
2
9
2
9
8
3
8
3
8
1
7
4
1
7
4
1
7
6
5
6
5
6
M TH 31 5 D 1 1 1
MT H 3 1 5 D 1 11
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