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7-1.
BLOCK DIAGRAM – BASE UNIT Section –
RFU901
ASIC
RF UNIT
IC751
CN901
B+
1
VBAT (FOR RX)
ANT901
6
TELESCOPIC
RXIP
51
RXIP
ANTENNA
5
52
RXIN
RXIN
4
RXQP
53
RXQP
3
RXQN
54
RXQN
8
LNAATN
43
LNAATN
7
RXEN
44
RXEN
2
AGC
60
AGC
CN902
B+
2
VBAT (FOR TX)
10
VBAT (FOR PLL)
7
TX.DATA
49
TXDATA
Q751
Q750
4
TXPWR0
85
TXPWR0
5
TXPWR1
TXPWR1
80
Q750, 751
TX POWER
ATTENUATOR
6
TXEN
TXEN
79
3
82
TXRXSEL
TXRXSW
12
SYNDATA
65
SYNDATA
11
SYNCLK
SYNCLK
71
13
SYNSTB
72
SYNSTB
15
SYNEN
75
SYNEN
14
REFOSC
66
SYNTH5MCLK
B+
D1002
LINE
68
LINE-LED
B+
SW951-2
T
88
DIALMODE
DIAL MODE
P
B+
OFF
SW952
RINGER
RING MODE ON/OFF
21
ON
97
XTALI
X752
9.6MHz
98
XTALO
KEY-IN0 – KEY-IN5
10 – 15
• SIGNAL PATH
: RX
: TX
: RX (INTERCOM)
: TX (INTERCOM)
: BELL
KEY MATRIX
S1001 – 1019
05
SECTION 7
DIAGRAMS
CODEC
IC701
DATAI
16 BIT
MODULATOR &
CDCDATAO 25
29
REGISTER
FILTER
FRAME
CDCFRAME 32
20
ICLK
CDCICLK 28
21
CONTROL
MCLK
REGISTER
CDCMCLK 26
26
RESETB
RESETO 27
25
DATAO
16 BIT
MODULATOR &
CDCDATAI 24
30
REGISTER
FILTER
T
P
DTMF MUTE
SW951-1
SWITCH
DIAL MODE
Q215
DIAL MUTE
SWITCH
Q214
AFC (BEEP) 59
DIALMUT
95
20
INTC & HOLD
CTRL
AF AMP
Q212, 213
ATTENUATOR
CONTROL CIRCUIT
RLI1
26
LEVEL DETECTOR
TLI1
23
HTO–
HYBRID
6
AMP
KEY-OUT0 – KEY-OUT3
36, 35, 31, 22
76 77
96
5
6
RESET SIGNAL
GENERATOR
IC602
EEPROM
IC951
– 25 –
LINEO
LINE
17
B.P.F.
AMP
SPKPO
19
SPEAKER
SPKMO
AMP
18
+
INTERCOM
MUTE SWITCH
Q216
LINE
LINE-IN
13
B.P.F.
AMP
MICIN
MIC
11
B.P.F.
AMP
+
B.P.F.
+
RXI
RX
RXO
+
21
22
ATTENUATOR
DIAL TONE
DETECTOR
RV201
VLC
SPEAKER
13
VOLUME
VOICE SPEAKERPHONE
IC103
RLI2
20
TLI2
17
HTI
TXO
TXI
MCO
TX
MIC
7
8
9
10
ATTENUATOR
AMP
CD
3
12
86
34
62 87
B+
D1001
CHARGE
SW601
RESET
T101
AF AMP
TEL AMP
LINE
Q203, 204
Q201, 202
TRANSFORMER
AF AMP
+
Q208, 209
PROTECT
Q101
DIAL MUTE
BRANCH DETECT
Q210
INTERCOM
OFF HOOK MUTE
MUTE SWITCH
SWITCH
Q217
Q211
SP101
(SPEAKER)
VO1
5
4
VIN
POWER AMP
IC104
VO2
8
CD
1
MIC501
MIC
MCI
11
MUT
92
+5V
AUDIO SYSTEM B+
REGULATOR
IC603
+5V
DIGITAL SYSTEM B+
REGULATOR
IC601
Q651, 652, 654
QUICK/NORMAL
CHARGE CONTROL
Q601, 655
CHARGE DETECT
Q653
LEVEL SHIFT
Q852
– 26 –
SPP-SS964
MJ101
LINE
D105 – 108
RINGER
HOOK ON/OFF
DETECT
PH103
PH101
PH102,
Q102, 103
HOOK ON/OFF
BUFFER
CONTROL
Q206
Q207
94
37
81
J601
–
+
DC IN 9V
CHARGE
+
CONTROL
–
CHARGE
TERMINAL
ART
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