Dxmodule; Brief Description; Electrical Description; Switch Matrix Module - Mitel SX-200 Practices

m
Main Control Card
DX MODULE
Brief Description
2.6
The DX Module plugs into the upper back corner of the Main Control Card, using the
two 96pin DIN connectors. It is used on the 336pot-t and 456-port SX-,200
DIGITAL. It is not used on the SX-200 FDm
Facilities
Facilities on the DX Module include:
0 Main DX Matrix
l
Peripheral DX Matrix
l
Dial Tone filter
l
Bay I and 2 access logic,
Electrical Description
The Main DX Matrix consists of four Mite1 DX chips arranged in a non-blocking 16 x
16 links. The matrix is capable of connecting any one of the 32 channels on any one
of the 16 incoming 2.048 MHz links to any one of the 32 channels on any of the 16
outgoing links.
The Peripheral DX Array consists of three Mite1 DX chips. It forms 8 x 24
concentrating/expanding links between the Main DX matrix and the 14 peripheral
cards. Eighteen links go to and from the COMBO backplane.
The Ringing Generator receives PCM data for the ringing signal from the Digital Signal
Processor on the Main Control Card. It is converted to an analog signal by a Mite1
Codec. This signal is filtered to remove fast rise time transients and passed through the
backplane connector to the ringing power amplifier in the power supply.
The Dial Tone Filter consists of a codec and an analog filter circuit. The PCM dial tone
is converted to an analog signal, filtered, and reconverted to PCM,
SWITCH MATRIX MODULE
Brief Description
2.7
The Switch Matrix Module (SMM) plugs into the upper back corner of the Main
Control Card, using the two 96pin DIN connectors (the same connectors that the
DX Module plugs into). The SMM is used only on the SX-200 FD and cannot be
used with Generic 1001, Generic 1002, Generic 1003, and Generic 1004.
Facilities
Facilities on the Switch Matrix Module include:
l
24 X 24 Circuit Switch Link DXArray
9109-096-l 25-NA
Issue 1 Revision 0 125 2-3