SPP-A2770
25
25
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – BASE UNIT Section –
84 – 91
LED701
MESSAGE
COUNTER
MIC401
SP401
(SPEAKER)
GAIN
CONTROL
Q107
TEL AMP
Q106
TEL LINE
B+ SWITCH
Q105
+5V
T101
DC LOOP
FILTER
Q104
RELAY
DRIVE
Q101
BRANCH DETECT
PH102, Q102, 103
13 – 15
21, 24 – 26
COL2 – COL5
ROW1 – ROW3
KEY MATRIX
K716 – K719,
K721 – K724,
K726 – K729
EEPROM
IC303
RESET
Q303
RESET
S302
+5V
(IC402 B+)
D302
M-DVDD
IC301, 303,
LCD101 B+
D705
CHARGE
D706
IN USE
D704
CHARGE LED
DRIVE
Q251
+12V
(RY101 B+)
+3.3V
(RF271 B+)
DC IN 9V
–
+
J201
LINE
MJ101
F101
RINGER
DETECT
PH101
+
–
CHARGE
TERMINAL
CHARGE
CONTROL
Q252, 253
Ref No.
K716
K717
K718
K719
K721
K722
K723
K724
K726
K727
K728
K729
PANEL DESIGNATION
QUICK SKIP
>
HANDSET LOCATOR
REVIEW REPEAT
DAY/TIME
VOL –
VOL +
ERASE
GREETING PLAY
MEMO REC
MESSAGE PLAY/STOP
ANSWER ON/OFF
GREETING REC
ANT102
(SUB ANTENNA)
22
SPI OUT
21
SPI IN
19
SPI CLK
18
SPI EN
10
IRQ CAP
16
POW DWN
3
ANT B CONT
4
ANT A CONT
17
RESET B
7
ANT A
12
RXAD PCM
11
TXAD PCM
13
PCM SYNC
14
PCMB CLK
RF271
RF UNIT
DIN
DOUT
CLK
EN
IRQ
POWER DOWN
ANT B
ANT A
SS RESET
DSP
IC402
X401
4.096MHz
2A
2G
1C
1D
1E
2C
2E
2D
1B
2B
1F
2F
1G
DSP RESET
FLASH MEMORY
IC403
DIN
DOUT
CLK
EN
IRQ
POWER DOWN
ANT B
ANT A
SS RESET
X301
6MHz
SYSTEM CONTROLLER
IC301
RING DET
OFF/OFF
•
SIGNAL PATH
: RX
: TX
: BELL
D107 – 110
RY101
ANT101
(MAIN ANTENNA)
MIC
MAIN ANT
ANSWER
ON/OFF
Содержание SPP-A2770 - 2.4ghz Cordless Telephone
Страница 55: ...55 SPP A2770 MEMO ...