Motorola MTR2000 Manual page 152

8-WIRE VOICE SIGNAL PATHS
P/O
LINE CONNECTOR
ON
STATION BACKPLANE
LINE 1 AUDIO
FROM LANDLINE
TO STATION
P/O
LINE CONNECTOR
ON
STATION BACKPLANE
LINE 2 AUDIO
FROM STATION
TO LANDLINE
P/O
SYSTEM CONNECTOR
ON
STATION BACKPLANE
LINE 3 AUDIO
FROM LANDLINE
TO STATION
P/O
SYSTEM CONNECTOR
ON
STATION BACKPLANE
LINE 4 AUDIO
FROM STATION
TO LANDLINE
Note: See TTN5067 Functional Block Diagram for 2-Wire
and 4-Wire configurations.
LANDLINE TO STATION VOICE AUDIO/SECURENET DATA PATHS
PRE-EMPHASIS/
AMPLIFIER
BUFFER
SPI LATCH 1 BIT 0
SPI LATCH 1 BIT 2
LINE DRIVER
+
–
LOW-PASS
LINE DRIVER
+
–
LANDLINE TO STATION VOICE AUDIO PATH
PRE-EMPHASIS/
AMPLIFIER
BUFFER
SPI LATCH 2 BIT 0
SPI LATCH 2 BIT 2
LINE DRIVER
+
–
LINE DRIVER
+
–
STATION TO LANDLINE VOICE AUDIO PATH
SPI LATCH
SPI LATCH BITS –
7 6
HIGH-PASS
FILTER
GAIN ADJUST
AMPLIFIER
DE-EMPHASIS
SPI LATCH 1 BIT 1
SPI LATCH 1 BIT 4/5
2-POLE VOICE
GAIN
ADJUST
FILTER
CIRCUITRY
SECURENET
SPI LATCH 1 BIT 3
STATION TO LANDLINE VOICE AUDIO/SECURENET DATA PATHS
GAIN ADJUST
AMPLIFIER
DE-EMPHASIS
SPI LATCH 2 BIT 1
SPI LATCH 2 BIT 4/5
2-POLE VOICE GAIN
LOW-PASS ADJUST
FILTER CIRCUITRY
SPI LATCH
SPI LATCH BITS –
7 6 5 4 3 2
TTN5068A 8-WIRE VOICE AUDIO DATA PATH FUNCTIONAL BLOCK DIAGRAM
8-WIRE WIB MODULE
MODEL TTN5068A
WL 1 LATCH CS*
SPI BUS/ CHIP
MOSI/SPI CLK SELECT FROM
SCM
5 4 3 2 1 0
SECURENET
SERIAL
DATA TO
SCM
PCM VOICE
AND DATA
TO SCM
A/D
CONVERTER
D/A
CONVERTER
PCM VOICE
AND DATA
FROM SCM
3-POLE SECURENET
LOW-PASS SERIAL
FILTER DATA FROM
SCM
PCM VOICE
AND DATA
TO SCM
A/D
CONVERTER
D/A
CONVERTER
PCM VOICE
AND DATA
FROM SCM
WL 1 LATCH CS*
SPI BUS/ CHIP
SELECT FROM
MOSI/SPI CLK
SCM
1 0
68P81094E29-B
Functional B D (Sheet 1 of 7)
03/26/99