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5-1.
BLOCK DIAGRAM – BASE UNIT Section –
A1
RF UNIT
ANT
LINE TX
RX DATA
RX DATA
RLL DATA
PLL DATA
RLL CLK
PLL CLK
RLL EN
PLL EN
CAR DET
CAR DET
TX DATA
TX DATA
LINE RX
I-TAD UNIT
MIC101
MIC
LIFPOUT
MIC
SP101
SPEAKER
SPK OUT
LIF MIN1
AMP
U9
LINE DC
SP EN
HOOK SW
BU HOOK
KEY MATRIX
KP1, 2, 4 – 11,
KP13, 15, 16
RING DET
ROW0 – ROW4
COL0 – COL2
KP1
KP7
KP2
B+
REC/MEMO
ERASE
ANSWER
(+5V)
ON/OFF
KP4
KP5
KP6
LED SEL
MAIL BOX
2
3
1
PLAY/STOP
KP11
KP13
SLOW
QUICK
L DATA
REPEAT
SKIP
KP15
KP16
L CLK
–
VOLUME
+
L LATCH
KP10
KP9
KP8
MENU
SELECT
TIME/SET
7SEG D1
7SEG D2
SECTION 5
DIAGRAMS
AF AMP
BUFFER
+
(FOR TX)
U2 (1/4)
FREQUENCY SHIFT
KEYING DEMODULATOR
U3
IN SE
9
DTMF
+
16
IN P
10
OUT
IN N
11
IN DSP
13
IN DCN
14
M DAT
24
SCK
23
SD IN
22
X1
SD OUT
21
3.58MHz
4
XIN
INT
20
DCB RD
1
5
XOUT
DC COMPA
2
MUTING
Q13
MAIL BOX
1
PLAY/STOP
ANSWER
ON/OFF
2
3
B+ SWITCH
(FOR LEDS)
Q12
LED1
LED2 LED3
LED4
LED/7 SEGMENTS LED
7 SEGMENTS LED
DRIVER
(MESSAGE COUNTER)
U10
U1
QA
15
14
A
QB
1
QC
2
SHIF
11
QD
3
CLK
QE
4
LATCH
12
QF
5
CLK
QG
6
7 SEGMENTS
LED DRIVE
Q10, 11
T1
LINE TRANSFORMER
Q1
AF AMP
(FOR DTMF)
U2 (3/4)
LINE DC
COMPARATOR
U2 (4/4)
AF AMP
(FOR RX)
U2 (2/4)
HOOK ON/OFF
34
4 3 2 1 44
RX DATA
31
RX DATA
OFF HOOK
PLL DATA
21
PLL DATA
PLL CLK
20
PLL CLK
DI
DO
PLL EN
19
PLL EN
CLK
CAR DET
23
CAR DET
CS
TX DATA
24
TX DATA
PARK
B+ (+5V)
KP17
SYSTEM
CONTROLLER
HANDSET
U4
LOCATOR
33
PAGE
LED7
FST CHG
NEW CALL
8
NEW CALL-LED
LED6
LINE
9
CHARGE-LED
LED5
10
CHARGE
IN USE-LED
RESET
15
16
X2
8MHz
11
11
D1 – D4
RECT
D3
D1
D4
D2
HOOK ON/OFF
U1
RINGER
DETECT
U7
D7
DETECT
Q9
• SIGNAL PATH
EEPROM
U6
12
25
4
DO
26
3
DI
27
2
CLK
28
1
CS
CHARGE
29
DETECT
B+ SWITCH
Q3, 4
Q2
D11, 12
CHARGE
CONTROL
Q7, 8
30
+5V
B+
REGULATOR
(+5V)
U5
RESET SIGNAL
14
GENERATOR
Q5, 6
SPP-A1070/A1071
J1
LINE
: TX
: RX
: BELL
+
CHARGE
TERMINAL
–
J3
–
+
DC IN 9V
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