SPP-933/934
QUAD COIL
SCAN
CONTROL
1st
MIXER
2nd
MIXER
LOCAL OSC
BUFFER
LOCAL
OSC
PHASE
DETECTOR
LOCK
DETECTOR
B.P.F.
FT501
RF AMP
Q501
TX AMP
Q506, 507
TX B+
SWITCH
Q502
IF AMP
Q601
TX
VCO
RX VCO
Q512
VCO
(RX SYSTEM)
PREAMP
Q602
AF AMP
Q607, 608
MIX
OUT
W601
(ANTENNA)
FT601
10.555MHz
MIX
IN
LIM
IN
MIX
OUT
16
5
LIMITER
AMP
SQUELCH
TRIGGER
WITH
HYSTERESIS
AF
AMP
FILTER
AMP
DE-
MODULATOR
DISCRI
VOLTAGE
L602
TX
FREQUENCY
CT601
TX
POWER
RT501
SQ
SENSITIVITY
RT601
MODULATION
SENSITIVITY
RT603
SPEAKER
OUT LEVEL
RT602
AF
OUT
B+ (3V)
FIL
IN
SQ IN
FIL
OUT
9
10
11
LED DRIVE
Q616
12
MC601
(MIC)
SP801
(SPEAKER)
8
PD2
PROGRAM-
MABLE
DIVIDER
LATCH
SI
CPS
PLL DATA
PLL CLK
PLL EN
X602
3.579545MHz
17
15
16
46
X1
6
X0
5
47
48
D607
TALK/BATT LOW
D609 – 612
(KEY BACK LIGHT)
SYSTEM CONTROLLER
IC603
2nd MIXER, LIMITER AMP, DET,
AF AMP, SQUELCH CONTROL
IC601
1st MIXER, VCO, PLL SYNTHESIZER
IC502
COMPARATOR
VREF
TX MUTE
B+ SWITCH
(FOR TX SYSTEM)
Q609
+3V
REGULATOR
IC604
RESET SIGNAL
GENERATOR
Q615
CHARGE
TERMINAL
11
RX MUTE 12
CONV 37
KEY LED 17
TALK LED
TALK LED
BATT B+
16
15
SC
TX B
13
RESET
2
42
CHG IN 36
+
–
VDET2
VIN1
COL1
–
COL5
Y601
(BUZZER)
RINGER DRIVE
Q613
B+ SWITCH
Q611
RINGER VOLUME
SWITCH
Q612
KEY MATRIX
S601 – S621
RING OUT 38
RING VOL 39
34
–
30
25
–
21
ROW1
–
ROW5
BT901
RECHARGEABLE
BATTERY PACK
(BP-T18)
BATTERY
VOLTAGE DETECT
IC605
2
VIN2
4
5
COMPARATOR
VDET1
1
05
• SIGNAL PATH
: RX
: TX
: BELL
BATT LOW 35
BATT OFF 29
PROGRAM-
MABLE
DIVIDER
PROGRAM-
MABLE
DIVIDER
1/32, 1/33
PRESCALER
L.P.F.
D606
SYSTEM CONTROLLER (IC603) B+
BATT B+
TX B+ (3V)
B+ (3V)
SQ IN
D
ATA
I
N
RST
XIN
XOUT
TX B+
(3V)
X601
10.1MHz
D503
D502
OSC
OSC
RXE
RXB
MIX
IN
DA
TA
OUT
D
ATA
E
N
44 45
41
9
10
18
13
1
2
20
21
13
FT602
455kHz
3
24
PHASE
DETECTOR
VCO
(TX SYSTEM)
2 DOUBLER
TX AMP
PD1
LATCH
HOLD
INTERCOM
CHANNEL
TALK
TONE
S601
S602
S603
S604
S605
1/2
LATCH
1/16, 1/17
PRESCALER
OSC &
1/2 DIVIDER
PULSE
COUNTER
SHIFT
REGISTER &
LATCH
L.P.F.
TXE
TXB
7
TX
OUT
2
5
4
14
LOCK
(SPP-934)
EXPANDER
CIRCUIT
COMPRESSOR
CIRCUIT
MIC AMP
Q404
EPI
CO
CPI
EO
5
7
3
EXPANDER, COMPRESSOR
IC602
MUTE C
MUTE E
2
11
10
PREAMP
PREAMP
LIMITER
MUTE
MUTE
D603
D605
EXPANDER, COMPRESSOR
(IC602) B+
LEVEL SHIFT
Q603, 604
40
S601
VOL
L
M
H
4 GHI
5 JKL
6 MNO
FLASH
#
S611
S612
S613
S614
S615
7 PQRS
8 TUV
9 WXYZ
S616
S617
S618
SPEED DIAL
PGM
REDIAL
PAUSE
S619
S620
S621
1
2 ABC
3 DEF
OFF
0 OPER
S606
S607
S608
S609
S610
5-3.
BLOCK DIAGRAM – HANDSET Section –
– 23 –
– 24 –
Summary of Contents for SPP-933 - 900mhz Cordless Telephone
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Page 27: ... 35 SPP 933 934 5 10 SCHEMATIC DIAGRAM BASE KEY Section Page 32 ...