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4-2.
BLOCK DIAGRAM – DISPLAY/KEY SHIFT/POWER SUPPLY Section –
D4
D5
D6
MAIL BOX
MAIL BOX
MAIL BOX
3
2
1
D3
ANSWER
ON/OFF
CA2
5
CA1
4
A2
10
G1
15
B2
12
B1
13
C1
1
D2
C2
8
7 SEGMENTS LED
MESSAGE
D1
3
Q0
COUNTER
D2
6
15
Q1
E1
2
1
Q2
E2
7
2
Q3
F2
11
3
LATCH
Q4
F1
14
4
Q5
G2
9
5
Q6
G1
16
6
Q0
15
SHIFT
Q3
3
REGISTER
DTMF SEL
Q2
(Page 25)
E
2
CID SEL
Q4
LATCH
4
TAD SPK SW
Q1
(Page 25)
K
1
Q5
SHIFT REGISTER
5
& LATCH
U1020
9
SER CLK
B
(Page 25)
CONF, INT COM,
SPK2, SPK1, L2, L1
CONF
Q7
(Page 25)
A
7
INT COM
Q6
6
SPK2
Q5
5
SPK1
Q4
4
LATCH
L2
Q3
3
L1
Q2
2
ASIC SPK/MIC MUTE
ASIC SPK MUTE
Q1
(Page 25)
J
1
MIC MUTE
Q0
SHIFT REGISTER
15
SER DATA IN
(Page 25)
D
05
B+ SWITCH
3
VCC
(FOR LEDS)
Q3
11
LED SEL
7 SEGMENTS
LED DRIVE
Q1
10
7SEG D2
7 SEGMENTS
I-TAD
LED DRIVE
UNIT
Q2
(2/2)
9
7SEG D1
SER
14
15
L DATA
SHIFT
REGISTER
11
14
L CLK
SCLK
12
13
L LATCH
RCLK
+5V
LED/7 SEGMENTS
14
LED DRIVE
U1
D1
Q5
5
NEW CALL
D9
Q4
4
CHARGE
D10
Q3
3
LATCH
MUTING
D8
Q2
2
SER
INTERCOM
14
SCLK
D12
Q1
11
1
LINE2
RCLK
12
D11
Q0
15
LINE1
SER
14
QH
SHIFT
9
SHIFT REGISTER
SCLK
REGISTER
11
RCLK
14 5
12 13
12
& LATCH
U1012
S1001
S1002
L2 RINGER
L1 RINGER
LEVEL
LEVEL
HIGHT
LOW
OFF
HIGHT
LOW
– 27 –
TAD TARM
1
18
P1.7
S DATA
TAD CTR
5
16
P1.5
S DATA
TAD S
6
17
P1.6
CLOCK
TAD CTR
7
6
P6.3
ACTIVE
TAD NINT
2
5
P6.2
ASIC
U1000 (2/2)
7
P6.4
1
P6.5
76
REGCTRL
57
GPIO3/MON3
KEY MATRIX
S1 – 3, 6 – 13
SER
14
SHIFT
SCLK
REGISTER
11
RCLK
RX PWR
12
B+
SHIFT REGISTER
& LATCH
B+ SWITCH
U1021
TX PWR
10
(FOR TX SYSTEM)
B+
Q1000
ASIC (U1000), EEPROM
(U1011), FREQUENCY SHIFT
KEYING DEMODULATOR
(U1014), LED B+
SPEAKER AMP (U1013)
VOICE SPEAKER PHONE
SER
(U1019) B+
10
CK
2
SL
1
11
3
SHIFT REGISTER
U1017
S1003
DIAL MODE
TONE
PULSE
OFF
Ref No.
PANEL DESIGNATION
Ref No.
PANEL DESIGNATION
S1
REC/MEMO
S12
SKIP/QUICK
S2
ERASE
S13
MAIL BOX 1
S3
ANSWER ON/OFF
S14
FLASH
S4
VOLUME –
S15
HOLD
S5
VOLUME +
S16
CONF
S6
TIME/SET
S17
INTERCOM
S7
SELECT
S18
LINE1
S8
MENU
S19
LINE2
KEYMATRIX
S9
MAIL BOX 2
S20
MUTING
S4, 5, 14 – 21
S10
MAIL BOX 3
S21
OFF
S11
REPEAT/SLOW
X1001
18.4MHz
CID/DTMF DATA
DATA
17
DTMF CLK
P1.4
15
22
DTMFEN
DCLK
16
GPIO0
42
21
CASDET
DTMF O/P
DTMFOUT
23
EXT CID FSK
IN
2
15
FSK/CAS
14
PD
OUT
3
11
10
FREQUENCY SHIFT
KEYING DEMODULATOR
U1014
X1000
3.579545MHz
SER DATA OUT
+5V
REGULATOR
REGULATOR
U1015
U1005
CHARGE ON
SWITCH
Q1001
D1010
+
REGULATOR
U1005
D7
SPARE
BATTERY
–
+
CHARGE
CONTROL
Q1002, 1003
CRADLE
–
DETECT
Q1004
– 28 –
SPP-A972
G
(Page 25)
H
(Page 25)
F
(Page 25)
C
(Page 25)
J1004
DC IN 9V
CHARGE
TERMINAL
FOR
SPARE
BATTERY
CHARGE
TERMINAL
FOR
HANDSET
BATTERY
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