Motorola MTR2000 Manual page 103

STATION CONTROL MODULE
MODEL TCN6273N
AUDIO PROCESSING CIRCUITRY
A
(8 KHz PCM)
CODEC #2
PCM1 DO
D/A
F
PCM CODEC BUS
A/D
PCM1 DI
CODEC2 MUX CONT
MOSI / SPI CLK
J
TCC MUX CONT
(20 KHz LINEAR)
CODEC #5
LIN_DO
D/A
20 KHz CODEC BUS
G
A/D
LIN_DI
CODEC1 MUX CONT1/2
TO
LINE 2 OUTPUT
CODED WL RX AUDIO
VIA
BACKPLANE
AND WIB
(24 KHz LINEAR)
CODEC #1
SSI_SRD
A/D
H
24 KHz CODEC BUS
D/A
SSI_STD
FROM
SECURENET
OPTION
BOARD
VIA
BACKPLANE
MOD MUX CONT
RSSI DATA
I
7
68P81094E31-I
Schematics (Sheet 4 of 36)
7/28/2007
SPKR MUTE
SWITCH
VAG
P5601
SPEAKER AUDIO
(4-PIN TELCO CONNECTOR
MRTI TX AUDIO FROM
MRTI CONNECTOR
ON BACKPLANE
SWITCH
P5602
MIC AUDIO
(8-PIN TELCO CONNECTOR
MIC
PREAMP
DIGITAL
MRTI POT
MRTI RX AUDIO
TO
Σ
MRTI CONNECTOR
ON BACKPLANE
MOSI / SPI CLK
MOD POT CS*
MRTI POT CS*
SWITCH
(VOICE CHANNEL)
TRUNK RX AUDIO
(CONTROL CHANNEL)
TRUNK TX DATA
DISC RX AUDIO
RAW WL TX AUDIO
DISC RX AUDIO
SECURE RX AUDIO
DECRYPTED RX AUDIO
TRUNK TX DATA
BUFFER AUX TX AUDIO
SWITCH
DIGITAL
AUX TX
CLEAR TX AUDIO
AUX TX AUDIO
CODED MOD AUDIO
SWITCH
DIGITAL
2
MOD POTS
RSSI (DC VOLTAGE)
R–2R
LADDER
PARALLEL I/O CIRCUITRY
DIGITAL SIGNALS
AUDIO SIGNALS
HOST DATA BUS
D0 – D7
TO EXTERNAL SPEAKER
ON FRONT OF SCM)
B
OCTAL D
FLIP-FLOP
(U4100)
TO MIC CONNECTOR
ON FRONT OF SCM)
CS LATCH*
C
PARALLEL I/O CHIP SELECTS
5
D0 – D7
TO/FROM
TRUNKING CONTROLLER
VIA BACKPLANE
TO OPTION BOARDS
VIA BACKPLANE
FROM LINE 1 INPUT
VIA BACKPLANE AND WIB
TO/FROM
SECURENET OPTION
BOARD
VIA BACKPLANE
D
FROM
SYSTEMS CONNECTOR
VIA BACKPLANE
TO OPTION BOARDS
VIA BACKPLANE
VCO MOD AUDIO
TO
EXCITER MODULE
REF MOD AUDIO
TO
EXCITER MODULE
TO
OPTION BOARDS
VIA BACKPLANE
ANTENNA RELAY
SCCI CS*
RF RELAY CONTROL
PA ENABLE
OCTAL D
FLIP-FLOP TX ENABLE
(U4103)
ADAPT T*
ADAPT R*
SYN2T CS*
SYN1T CS*
SYN2R CS*
ADT CS*
SYN1R CS*
1 OF 16
DEMUX ADR CS*
4 (U4101)
DAR CS*
CS*
MOD POT CS*
NOISE B CONT2
NOISE B CONT1
OCTAL D
AUX CARRIER
FLIP-FLOP
PATCH INHIBIT*
(U4104)
MRTI RX CARRIER*
RDSTAT-R2CONT
RX CODE DETECT*
TX CODE DETECT*
OCTAL
BUFFER
(U4106) WL2 LATCH CS*
WL1 LATCH CS*
EXT SPI CS2*
EXT SPI CS1*
CHIP SELECT*
PA A/D CS*
CHIP SELECTS TO OPTION BOARDS
7
1 OF 16
PA DA CS*
4 DEMUX
(U4102)
AD CS*
MRTI POT CS*
SERIAL ID IN*
SERIAL ID OUT*
OCTAL D
FLIP-FLOP CARRIER DETECT SW
(U4105)
OCTAL D
LED CONTROL LINES
FLIP-FLOP
(U4107) 5
STATION CONTROL MODULE FUNCTIONAL BLOCK DIAGRAM
SCCI CS*
E
TO EXCITER
MODULE
TO RECEIVER
MODULE
TRUNK DUPLEX EN*
TRUNK TX INHIBIT*
TO/FROM
MRTI MONITOR*
BACKPLANE
PL STRIP* or CCI
TRUNK MUTE*
TRUNK MRTI PTT*
EXT CODE DETECT
RX INHIBIT-R2 STATUS
TO SPI I/O
A/D
CONVERTER
SERIAL ID1*
EXTERNAL REF ENABLE
TO STATION
PEND CS*
REFERENCE
SYNTH CS* CIRCUITRY
STATUS
RX ACTIVE
2
FRONT
PA ON
PANEL
FAILSOFT LEDS