Motorola MTR2000 T5544 Instruction / Field Service Manual page 194

Station Control Modules
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
TO
LINE 2 OUTPUT
VIA
BACKPLANE
AND WIB
CODEC1 MUX CONT1/2
(24 KHz LINEAR)
CODEC #1
SSI_SRD
A/D
H
24 KHz CODEC BUS
D/A
SSI_STD
MOD MUX CONT
I RSSI DATA
7
Figure 1. Station Control Module Functional Block
Diagram - Station Control Circuitry (2 of 2)
16
68P81096E32-E
08/06/07
SPKR MUTE
SWITCH
VAG P5601
SPEAKER AUDIO
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
TRUNK TX DATA
AUX TX AUDIO
BUFFER
SWITCH
DIGITAL
AUX TX POT
CLEAR TX AUDIO
AUX TX AUDIO
SWITCH
DIGITAL
2
MOD POTS
RSSI (DC VOLTAGE)
R–2R
LADDER
PARALLEL I/O
DIGITAL SIGNALS
CIRCUITRY
AUDIO SIGNALS
HOST DATA BUS
D0 – D7
TO EXTERNAL SPEAKER
(4-PIN TELCO CONNECTOR
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
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
ADR CS*
DEMUX
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
5
(U4107)
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
CIRCUITRY
SYNTH CS*
STATUS
RX ACTIVE
2
FRONT
PA ON
PANEL
FAILSOFT LEDS