Revised January 2001
Part No. 001-9800-501
5-6
+ 5V
U12
SN74LVCC3245
VCCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND1
GND2
1
2
3
4
5
6
7
8
9
10
11
12
SC
K
MOSI
SS
VCCB
NC
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND3
3.3VD
C22
0.1
+ 5V
U13
SN74LVCC3245
VCCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND1
GND2
VCCB
NC
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND3
3.3VD
C32
0.1
C31
0.1
U16A
7432
2
1
3
2
3
5
4
1
NC1
NC2
VSS1
DVDD1
A10
HD7
A11
A12
A13
A14
A15
NC3
HAS
VSS2
NC4
CVDD1
HCS
HR/W
Ready
PS
DS
IS
R/W
MSTRB
IOSTRB
MSC
XF
HOLDA
IAQ
HOLD
BIO
MP/MC
DVDD2
VSS3
NC5
NC6
NC
7
MC8
HCN
T
L
0
VSS
4
BCL
K
R
0
BCL
K
R
1
BFS
R
0
BFS
R
1
BD
R
0
HCN
T
L
1
BD
R
1
B
C
KLX0
B
C
LKX1
VSS
5
HI
NT/
TOUT
1
C
V
DD2
B
F
SX0
B
F
SX1
HRD
Y
D
V
DD3
VSS
6
HD
0
BD
X
0
BD
X
1
AC
K
HBI
L
NMI
IN
T0
IN
T1
IN
T2
IN
T3
C
V
DD3
HD
1
VSS
7
NC
9
NC
1
0
NC11
NC12
DBDD4
VSS0
CLKMD1
CLKMD2
CLKMD3
NC13
HD2
TOUT0
EMU0
EMU1/OFF
TD0
TD1
TRST
TCK
TMS
NC14
CVDD4
HPIENA
VSS9
CLKOUT
HD3
X1
X2/CLKIN
RS
D0
D1
D2
D3
D4
D5
A16
VSS10
A17
A18
NC
1
8
NC
1
7
C
V
DD6
A9
A8
A7
A6
A5
A4
HD
6
A3
A2
A1
A0
D
V
DD6
HD
S
2
VSS
1
2
HD
S
1
NC
1
6
C
V
DD5
HD
5
D15
D14
D13
HD
4
D12
D11
D10
D9
D8
D7
D6
D
V
DD5
VSS
1
1
NC
1
5
A19
VCC1
VCC2
VINR
VREFL
VREFR
VINL
RST
ML
SYSCLK
LRCIN
BCKIN
DOUT
DGND
VDD
DIN
ZFLG
MD
MC
VOUTL
VOUTR
VCOM
GND1
GND2
VCC3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
U2
PCM3002
3.3VD
1.8V
1.8V
R24
10k
R23
10k
R21
10k
R20
10k
3.3VD
3.3VD
R31
10k
R32
10k
R33
10k
1.8V
1.8V
3.3VD
1.8V
1
2
3
4
5
6
7
8
9
11
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
14
3
14
2
14
1
14
0
13
9
13
8
13
7
13
6
13
5
13
4
13
3
13
2
13
1
13
0
12
9
12
8
12
7
12
6
12
5
12
4
12
3
12
2
12
1
12
0
11
9
11
8
11
7
11
6
11
5
11
4
11
3
11
2
11
1
11
0
10
9
14
4
MI
SO
MOSI
SC
K
SS
MI
SO
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
D1
A118
A117
A116
D100
D101
D102
D103
D104
D105
D106
D107
D108
D109
D110
D111
D112
D113
D114
D115
3.3VD
A110
A111
A112
A113
A114
A115
A109
A108
A107
A106
A105
A104
A103
A102
A101
3.3VD
A100
C33
0.1
C34
0.001
3.3VD
C35
0.1
C36
0.001
3.3VA
+
C14
4.7
+
C11
4.7
R27
0 ohm
Not Used
C19
0.1
VREF
3.3VA
C37
0.1
1
9
11
2
3
7
14
12
6
5
4
8
10
12
3.3VD
R34
10k
R35
10k
J1
R15
10k
U1
TMS320VC5402
DIGITAL SIGNAL PROCESSOR
(DSP)
Serial Data
Serial Clock
VIAS TO AUDIO/LOGIC
BOARD J302
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
10
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
9
7
14
8
6
5
4
3
2
1
13
12
11
15
16
17
18
19
20
Receive Audio
Transmit Audio
To J302, Pin:
1
2
3
4
SP1
Wire Harness To
Audio/Logic Board
From U102, Pin 1 Wire-Out
Not Connected
To U102, Pin 2 Wire-Out
From Latch U112, Pin 14 (Output E)
To Audio/Logic Board
1
IN 2
9
+
–
U8B
MC3303
VREF
R16
30k
C12
390pF
R28
2k
6
5
Rx Audio Amp
OUTPUT B
J3
1
9
2
5
6
3
4
8
10
7
R36
0 ohm
+
–
U8D
MC3303
VREF
R14
30k
C10
390pF
R9
15k
R19
2k
+
–
U8D
MC3303
VREF
R13
30k
C9
390pF
R12
15k
R26
2k
IN 3
OUTPUT A
Rx In
Tx In
W301
W309
W302
W305
W306
W303
W304
W308
W310
W307
13
12
14
9
10
8
Rx Audio Amp
Tx Audio Amp
Option 1:
J2
4
+
–
U8A
MC3303
VREF
R17
30k
C13
390pF
R18
18k
R1
2k
2
3
Tx Audio Amp
6
R37
0 ohm
R10
18k
R38
18k
C40
0.1
2
3
5
7
8
8V
Source
10
Rx Audio Out
Tx Audio Out
Option 2:
W311
W319
W312
W313
W314
W315
W317
W318
W320
8V
Source
7
1
C25
0.1
+
C29
100
R7
0.5
+
C28
100
8V
+
C27
100
+5V
Source
IN
Out
Gnd
U15
TL750M
+5V REGULATOR
3.3VD (DIGITAL)
REGULATOR
1
2
3
4
C3
0.1
5
6
7
8
+
C30
10
Gnd
EN
In 1
In 2
RS
Sense
Out 2
Out 1
3.3VD
Source
R6
270k
U6
TPS7333QD
+1.8V REGULATOR
C1
0.1
4
3
2
1
Gnd
EN
In 1
In 2
RS
Sense
Gnd
EN
U5
TPS7201QD
5
6
7
8
R4
82k
R3
270k
R5
160k
+
C5
10
+1.8V
Source
AD
A1
NC
GND
VCC
WP
SCL
SDA
5
6
7
8
C15
0.1
C16
0.001
3.3VD
U7
AT24C256W
R22
10k
3.3VD
R29
100
32K x 8 EEPROM
+3.3VD
2
1
C26
0.1
Y1
NC
GND
VCC
+3.3VD
4
3
Out
U9A
SN74LVC04A
1
2
4.096 MHz CRYSTAL
3.3VD
C44
0.1
C45
0.001
C46
0.1
C47
0.001
C48
0.1
C49
0.001
C50
0.1
C51
0.001
C52
0.1
C53
0.001
C54
0.1
C55
0.001
U1-4
U1-33
U1-56
U1-75
U1-112
U1-130
3.3VA (ANALOG)
REGULATOR
1
2
3
4
C23
0.1
5
6
7
8
+
C4
10
Gnd
EN
In 1
In 2
RS
Sense
Out 2
Out 1
R30
270k
U11
TPS7333QD
8V
3.3VA
Source
R8
6.8k
R11
1.8k
8V
+
C8
4.7
C24
0.001
VREF
Source
C2
0.1
R2
0 ohm
Analog Gnd
Digital Gnd
1
2
3
4
5
6
7
8
9
10
A15
A14
A13
A12
A11
A10
A9
A8
NC1
NC2
WE#
RESET#
NC3
NC4
RY/BY#
A18
A17
A7
A6
A5
A4
A3
A2
A1
A101
A102
A103
A104
A105
A106
A107
A117
A118
A16
BYTE#
VSS1
DO15/A-1
DO7
DO14
DO6
DO13
DO5
DO12
DO4
VCC
DO11
DO3
DO10
DO2
DO9
DO1
DO8
DO0
OE#
VSS
CE#
A0
R25
10k
3.3VD
A100
D115
D107
D114
D106
D113
D105
D104
D111
D112
D103
D110
D102
D109
D101
D108
D100
C20
0.1
C21
0.001
3.3VD
A108
A109
A110
A111
A112
A113
A114
A115
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
U4
AM29LV800
A116
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
A1
A2
A3
A4
A5
E
DQA1
DQA2
DQA3
DQA4
VDD1
VSS1
DQA5
DQA6
DQA7
DQA8
W
A6
A7
A8
A9
NC1
A16
A15
A14
G
UB
LB
DQB8
DQB7
DQB6
DQB5
VSS2
VDD2
DQB4
DQB3
DQB2
DQB1
NC3
A13
A12
A11
A10
NC2
24
23
3.3VD
U10A
SN74LVC04
1
2
3
4
U10B
SN74LVC04
U3
MCM6323A
64K x 16 RAM
C6
0.1
C7
0.001
3.3VD
A100
A101
A102
D115
D113
D114
D112
D111
D110
D109
D108
A103
A104
A105
A106
A107
A108
A109
A110
D107
D106
D105
D104
D103
D102
D101
D100
A111
A112
A113
A114
A115
U9-14
C39
0.1
C56
0.1
C57
0.001
C58
0.1
C59
0.001
C60
0.1
C61
0.001
C62
0.1
C63
0.001
C64
0.1
C65
0.001
C66
0.1
C67
0.001
+1.8V
U1-16
U1-52
U1-68
U1-91
U1-125
U1-142
BUS TRANSCEIVER
BUS TRANSCEIVER
AUDIO CODEC
512K x 16 FLASH
1
3
2
3.3VD
1.8V
+
C17
10
+
C18
10
C38
0.1
U10-14
UNREVISED DSP BOARD SCHEMATIC DIAGRAM