Motorola TALKABOUT T2688, Руководство по обслуживанию

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RX SIGNAL PATH
TX SIGNAL PATH
MAIN VCO SIGNAL PATH
TUNING VOLTAGES
REFERENCE CLOCK
Orderable Part
Non - Orderable Part
20 PIN I / O CONN.
ALRT
RXON1
RXON2
TX_ON
To U603
BS
Voice Uplink
Voice Downlink
Baseband Uplink
Baseband Downlink
Timing Module
Supply
&
Ground
AFC
AGC
DAI
Interface
DSP
Serial
Interface
MCU
Serial
Interface
Auxiliary
ADC
Bus
Controller
51
52
53
54
RXI
RXI
RXQ
RXQ
From U603
SEE PAGE 4 OF THE
LEVEL 3 CIRCUIT DESCRIPTION
1
2
3
BFSX
BCLKX
BDX
ARM 7
Central
RISC Processing
Unit
Time
Processing
Unit
Memory
Interface U
Wire
I/O
SIM
Interface
DSP CORE
(LEAD)
General
Purpose
(APIF)
ARM
Peripheral
Interface
ACT
RIF
TSP
BFSX
BCLKX
BDX
From VEGA
TO GEMINI
84
86
101
VDX
VCLKRX
VFSRX
85
96
98
To / From VEGA
VDX
VCLKRX
VFSRX
From GEMINI
SEE PAGE 6 OF THE
LEVEL 3 CIRCUIT DESCRIPTION
LS1
SPKR
32
33
34
AUX0
J10
2 1
4
1
DVCC
J8
3 2
29
AUXI
MIC
X1
27
28
SEE PAGE 7 OF THE
LEVEL 3 CIRCUIT DESCRIPTION
Voiceband
Serial
Interface
VFSRX
VCLKRX
VDR
To GEMINI
14
15
16
16
13
13
From Vega VDR
74
75
76
BFSR
BDR
BCLKR
6
4
5
BFSR
BDR
BCLKR From GEMINI
SEE PAGE 8 OF THE
LEVEL 3 CIRCUIT DESCRIPTION
60
59
58
57
TXI
TXI
TXQ
TXQ
To U603
To VEGA
APC
47
RAMPDA To U202 ( RAMP )
TR1
AVCC
40
AFC To 13Mhz Clock Cct
18
13MHz
70
13MHz
13MHz
From U402
(DATA)
SYNCLK
(CLOCK)
(SYNPRG)
SYNDAT
SYNENA
T
o
S
y
n
th
es
is
e
r
80
79
59
Voltage Reg
Voltage Reg
Voltage Reg
Voltage Reg
2.765V@100mA
2.765V@130mA
2.765V@5mA
DVCC
AVCC
VBAT
1
VTCXO
VRTC
27
24
2
8
I/O
GEMINI
VEGA
U27
POWER MANAGEMENT IC
X2
1
2
RTC BATT
U32
U46
8
IO14
RTCCE
F
ro
m
G
em
in
i
IO14
RTCCE
To RTC IC
U46
U35
3
5
3
Control Logic
2
1
U53 U54
IO2
From Gemini
K
E
Y
P
A
D
M
A
T
R
IX
S16
VBAT
LCD
Keypad
Backlights PWR
2
PWR
CHGERP
1
CHGERP
LCDRST
25
U28
SIM
SIM
Interface
20
VSIM
5 & 4
RST
3
16
19
1
CLK
15
2
S
_
I/
O
S
_
R
S
T
S
_
C
L
K
S
_
P
W
S
T
S
_
3
V
5
V
To Gemini
S_I/O
S_RST
S_CLK
S_PWST
S-3V5V
105
100
103
104
102
T
o
U
2
7
P
o
w
er
M
a
n
ag
em
e
n
t
IC
SIM_PD& SIM I/O
BATTERY
JP2
VBAT
1
2
BATEMP
T
o
V
E
G
A
37
38
BATEMP
BATID
BATID
From
Batt
3
4
A3
S D
G
U30
IO9
IO9
From Charger CCt
BQ6
BQ3
U29
C81
IO11
To Gemini
From Gemini
IO11
To Charger CCt
11 IOPN11
IOPN11
U26 U25
F1
F2
D16
From I / O Connector
To Charger Circuit
S
D
G
VBAT
Data Cable
S2
G2
From I / O Connector
U47
1
6
4
To Gemini
PVCC18
PVCC18
1,8,30,49
57,66,87
121,140
SRAM
FLASH
E2
12Mbit
4 Mbit
2 Mbit
ADDRESS BUS
ADDRESS BUS
DATA BUS
DATA BUS
NRAMCS
DVCC
RNW
U22
U23
DVCC
NFOE
NROMCS
RNW
NRESET
A3
G2, G3
B3
F6,G4,
G1
F1
A4
B4
Backlights
C
o
n
tr
a
st
C
n
tl
L
C
D
D
rv
r
To Display
DATA Bus
DVCC
RNW
A0
NCSO
NRESET
A0
To Display
NRAMCS
NROMCS
RNW
NFOE
NCSO
NRESET
LCDRST
27
12
NRESET
72
BQ4
U8
BUZZER
120
VIBRATOR
VBAT
U44
BQ1
DVCC
b
e
c
45
ROW0
ROW1
ROW2
ROW3
ROW4
COL0
COL1
COL2
COL3
BQ2 LEDON
VBAT
U34
COL4
ROW4
From Gemini
From Gemini
ROW0,1, 2, 3, 4
COL0,1, 2, 3
COL4
45
73
95
50
117
122
126
.
129
130
132
133
128
50
21
20
16
13
70
69
118
ACCIN
13 56
VSYNEN
TO RF_ON (RF PSU)
RS232 Signalling
IO2
To On Control 112
110 - 114 & 105
5, 6
7, 8
2, 4
5, 6
7, 8
9, 10
11, 12
13, 14
15
1, 24
28
25
26
RS232 Signalling
2
3
9
A2
13
12
Not Used
JTAG Only
DATAID
109
Identifies DATA service
To Gemini
DTATID
IO6
IO6
106
To Gemini
ACCIN
ACCID
ACCIN
ACCID
56
39
DVCC
AVCC
62 AGCA (AGCPRG)
T
o
T
X
/
R
X
I
C
A
G
C
P
R
G
S
Y
N
P
R
G
97
VEGA / GEMINI
COMMUNICATION
BUS
D
u
a
l
B
a
n
d
T
o
p
a
z
GSM SERVICE SUPPORT GROUP 01.01.11
LEVEL 3 RF Block Diagram Rev. 1.3
Dual Band Topaz
Michael Hansen, Ray Collins, Ralf Lorenzen-Scheil Page 2 of 2
U40
U24
3
4 5
3
Baseband
Analog
13MHz
RTC
Pin 11 U40
PA_ON
119
D14
for detection
U26
D2
(DTR)
10
D12
U3
U1
14
GND
A1
B1
B3 NC
B2