SPP-IM977
5
11
ANT1
(ANTENNA)
(Page 25)
(Page 25)
(Page 26)
(Page 25)
(Page 25)
(Page 26)
(Page 26)
(Page 26)
(Page 25)
RX AUDIO
TX DATA
6
10
2
9
8
79
86
67
68
64
58
62
63
59
55
65
1
2
B
A
3
C
4
11
D
E
10
9
80
89
56
11
5
4
3
2
15
1
12
14
12
11
10
9
7
5
6
13
5
4
3
2
15
1
14
13
43
10
9
21
14
13
12
11
90
83
F
G
H
J
23
26
21
22
17
20
13
8
5
2
1
LINE
SELECT
U1001 (1/4)
LINE
SELECT
U1004 (3/4)
LINE
SELECT
U1004 (4/4)
LINE
SELECT
U1004 (1/4)
LINE
SELECT
U1004 (2/4)
LINE
SELECT
U1006 (2/4)
LINE
SELECT
U1011 (1/4)
LINE
SELECT
U1004 (3/4)
LINE
SELECT
U1001 (2/4)
LINE
SELECT
U1006 (3/4)
LINE CONDITION
MONITOR
U1007 (1/4)
HOOK
ON/OFF
U1016
LINE
SELECT
U1006 (4/4)
LINE
SELECT
U1006 (1/4)
RF1
RF
UNIT
RSSI
PLL REF
PLL EN
SER DATA OUT
SER CLK
CONF, INT COM,
SPK2, SPK1, L2, L1
AF AMP
U1008 (4/4)
ADIN2
RINGER
DSIN
TX DATA
PLLREF
GPIO2/MON2
SOUT
SCLK
SIN
GPIO5/TST1
DAOUT2
ASIC
U1000 (1/2)
P1.3
P1.2
P1.1
P1.0
AIN
AOP
RING1
RING2
HOOK1
HOOK2
CONF
L1
AF AMP
U1010 (4/4)
TEL AMP
U1010 (3/4)
PARA DETECT
Q1006, 1008, U1022
TEL AMP
U1010 (1/4, 2/4)
T1001
LINE
TRANSFORMER
1
2
3
4
L1/L1+L2
J1003
L2
J1011
DATA
J1008
HOOK
ON/OFF
U1003
LINE CONDITION
MONITOR
U1008 (1/4)
RINGER
DETECT
U1008 (2/4, 3/4)
RINGER
DETECT
U1007 (2/4, 3/4)
D1005, 1006,
D1018, 1020
Q1007
Q1010
LINE COND1
HOOK1
RING1
RING2
L1
SPK1
SPK1
INT COM
ADIN1
FSK
GPIO4/TST0
P3.0
GPIO1
DTMF SEL
EEPROM
U1011
SELECTOR
U1002
LINE1/2
SELECTOR
U1028
SK
CS
DI
DO
CID SEL
Z
Y
X
Z0
Z1
Y0
Y1
X0
X1
L1 FSK
LINE COND1
LINE COND2
L2 FSK
SER CLK
SER DATA OUT
SER DATA IN
DTMF/CID SEL
MIC
AMP
TX
ATTENUATOR
HYBRID
AMP
LEVEL
DETECTOR
RX
ATTENUATOR
DIAL MODE
DETECTOR
ATTENUATOR
CONTROL CIRCUIT
AF AMP
U1007 (4/4)
AF AMP
U1009 (1/4)
TEL AMP
U1009 (2/4)
TEL AMP
U1009 (3/4, 4/4)
PARA DETECT
Q1019, 1022, U1023
EX CID FSK
DTMF O/P
CID DTMF DATA,
DTMF CLK
U1018
(MIC)
MIC MUTE
MCI
MCO
MUTE
TXI
TXO
8
TLI2
RLI2
VLC
RXO
DAOUT2
SPEAKER AMP
U1013
SP1
(SPEAKER)
ASIC SPK MUTE
CD
VO2
VO1
VIN
RINGER
VOICE SPEAKERPHONE
U1019
05
RXI
HTI
HTO+
HTO–
TLI1
RLI1
CID DTMF
DATA
DTMF
CLK
Z
Y
X
Z0
Z1
Y0
Y1
X1
CONF
L2
SPK2
SPK2
L2
INT COM
•
SIGNAL PATH
: RX
: TX
: RX (INTERCOM)
: TX (INTERCOM)
: BELL
T1000
LINE
TRANSFORMER
LINE COND2
HOOK2
D1014, 1016
D1017, 1021
1
2
1
2
L2 FSK
L1 FSK
A
B
C
A
B
C
SECTION 4
DIAGRAMS
4-1.
BLOCK DIAGRAM – MAIN Section –
– 23 –
– 24 –
Summary of Contents for SPP-IM977
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