– 43 –
– 44 –
• IC Block Diagrams
U1
U2765B-AFSG3 (BASE RF Board)
U1
U2765B-AFSG3 (HAND RF Board)
U3
TB31202BFN-EL (HAND RF Board)
U10
TB31202BFN-EL (BASE RF Board)
U3
CAT93C46KI (BASE MAIN Board)
VCC/2
COMPARATOR
SLICER
LOCAL OSC
BUFFER
VCC2
LO REF
LO IN
GND2
NC
VCC3
LIM1 OUT
GND3
LIM2 IN
LIM2 REF
GND4
DEM NT
ANK
DEM T
ANK
DEM OUT
NC
A1 REF
A1 IN
GND1
MIX OUT
VCC1
MIX NOUT
LIM1 REF
LIM1 IN
RSSI
DA
TA
OUT
COM NIN
COM IN
SL IN
1
2
3
4 5 6 7
8
9
10
11
12
13
14
28
27 26
25 24 23
22
21 20 19 18
17 16
15
A1
MIX
LIMITER
AMP
LIMITER
AMP
DE-
MODULATOR
RSSI
+
–
+
–
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
BUF
BUF
PROGRAMABLE
DIVIDER
PHASE
COMPARATOR
OUTPUT
SWITCH
L. OSC
REFERENCE
DIVIDER
LOCK
DET
CONTROL
CIRCUIT
1/2
1/2
1/2
BUF
1
––––––––
32, 33
1
––––––––
32, 33
PHASE
COMPARATOR
OUTPUT
PROGRAMABLE
DIVIDER
FIN1
VCC
CP1
GND
LD
CK
D
ATA
STB
FIN2
VCC
CP2
GND
SW
XIN
XOUT
BO
U4
TA31103F (BASE MAIN Board)
U7
TA31103F (HAND MAIN Board)
U10
MC74HC595AF (BASE MAIN Board)
U11
LP2953IM (HAND MAIN Board)
2
1
E-RECT
PRE OUT
PRE NF
VCC
VREF
THROUG
RO2
RIN
EXP OUT
RO1
COMP MUTE
EXP MUTE
4
FIL1 OUT
3
FIL2 IN
FIL2 OUT
+
–
+
–
5
9
8
7
6
IN2
C-RECT
C-NF
FIL1 IN
COMP OUT
10 11 12
24
20
21
22
23
19
17
18
15 14 13
16
GND
MIC IN
MIC OUT
MIC NF
∆
G
VREF
+
–
VREF
VREF
SWITCH
CONTROL
+
–
+
–
MIC AMP
SUM
AMP
+
–
+
–
∆
G
VREF
VREF
PRE AMP
SUM
AMP
RO1
AMP
COMP
MUTE
EXP
MUTE
THROUG
THROUGH
IN 2
AMP
FILTER
AMP 1
FILTER
AMP 2
+
–
VREF
RO2
AMP
+
–
1
2
3
4
5
6
7
8
9
10
16
15
14
13
12
11
SHIFT REGISTER
LATCH
PARALLEL DATA
OUTPUT
GND
VCC
LATCH
CLOCK
PARALLEL DATA
OUTPUT
SERIAL DATA
INPUT
OUTPUT
ENABLE
SHIFT
CLOCK
SERIAL DATA
OUTPUT
RESET
QB
QC
QD
QE
QF
QG
QH
SQH
A
QA
2
3
1
8
9
10
11
12
13
14
15
7
5
6
4
SHUT DOWN
ERROR
NC
GND
NC
OUTPUT
SENSE
GND
VREF
COMP IN
COMP OUT
GND
INPUT
FEEDBACK
5V TAP
+
–
+
–
+
–
+
–
ERROR
AMP
SHUT DOWN
COMPARATOR
DROP OUT
DETECTION AMP
AUXILLARY
COMPARATOR
1.23V
16 GND
8
7
6
5
MEMORY ARRAY
128X8 bit/
64X16 bit
HIGH VOLTAGE
GENERATOR
ADDRESS
DECODER
DATA REGISTER
DECODE & CONTROL
LOGIC
CLOCK GENERATOR
2
1
3
4
BUFFER
VCC
NC
ORG
GND
CS
SK
DI
DO
U6
KA8602D (BASE MAIN Board)
+
–
2
3
4
BIAS
CIRCUIT
+
–
1
8
7
6
5
AMP1
AMP2
IN+
IN–
OUT1
VCC
GND
OUT2
MUTE
RIPPLE
REJECTION
Содержание A941 - SPP Cordless Phone
Страница 2: ...SPP A941 25 26 5 6 SCHEMATIC DIAGRAM BASE RF Board See page 43 for IC Block Diagrams Page 30 ...
Страница 4: ...SPP A941 33 34 5 10 SCHEMATIC DIAGRAM BASE I TAD Board See page 31 for Waveform Page 30 Page 30 ...
Страница 6: ...SPP A941 39 40 5 14 SCHEMATIC DIAGRAM HAND RF Board See page 43 for IC Block Diagrams Page 42 ...
