Mitel SX 200 DIGITAL Pabx Superset 3 Telephone Description Manual

SECTION MITL9109-094-125-NAPage 10 

Circuit Card Descriptions
5. DX MODULEBrief Description
5.01
Facilities5.02
0The DX Module plugs into the upper back corner of the Main
Control Card, using the two 96-pin DIN connectors.
Facilities on the DX Module include:
Main DX Matrix
Peripheral DX Matrix
Dial Tone filter
Bay 1 and 2 access logic.
Electrical Description5.03The Main DX Matrix consists of four 
Mite1 8980 DX chips ar-
ranged in a non-blocking 16 x 16 links. The matrix is capable of
connecting any one of the 32 channels on any one of...

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Circuit Card Descriptions
6. Tl CLOCK MODULE
Brief Description
6.01The Tl Clock Module is a digitally controlled oscillator which
synchronizes the system clock to an incoming 
Tl frame rate
clock signal.The 
Tl Clock Module plugs into the SX-200 DIGITAL Main
Control Card.
Electrical Description
6.02Every 100 ms the 
Tl Trunk card sends a counter value repre-
senting the phase difference between the incoming 
Tl clock
and the SX-200 DIGITAL system clock. On the 
Tl Clock Module a
Digital to Analogue...

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Circuit Card Descriptions
7. BAY CONTROL CARD
General7.01The Bay Control Card is required in the lower rightmost slot of
all digital bays, except Bays 1 and 2. On 672-port systems, a
Bay Control card is required in every bay. This card must NOT be
inserted or removed with the power on. The card measures 158 mm x
368 mm (6.2 in. x 14.5 in.).
Functions
7.02The Bay Control card provides:
0Control of operations within the Bay
lMonitoring of lines, trunks and other circuits within the bay;
reports are sent to...

SECTION MITL9109-094-125-NA
u.
U0129ElRl
Figure 7-l Bay Control Card
Page 16 

Circuit Card Descriptions
8. PERIPHERAL CONTROL CARD
Brief Description8.01The Peripheral Control card is located in slot 20 of an analog
peripheral shelf. It controls the analog cards on instructions
from the Main Control Card. Figure 8-l shows the front faces of the
Peripheral Control Card, the Scanner and Digital Interface cards and
the Main Control Card.
Major Components
8.02
l
l
lFacilities
8.03
0Major components provided by the Peripheral Control Card in-
clude:
6809 microprocessor running at 1.33...

SECTION MITL9109-094-125-NASYSTEM
RESET 
-BUTTONPLANE
TRANSFER-BUTTON
*INOR
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MAIN CONTROL
CARDBAV CONTROL
CARD7-SEGMENT
DISPLAYS

Circuit Card Descriptions
9. DIGITAL INTERFACE CARD
Brief Description9.01The Digital Interface card is installed in slot 18 of an analog
peripheral shelf. It interfaces the analog shelf to the Main Con-
trol card. The card is illustrated in Figure 9-l.
Facilities
9.02Facilities for the Digital Interface card include:
lanalog/digital and digital/analog conversions between the ana-
log junctors and the Master Control card via the PCM cable.
aenables dial pulse detection by the Peripheral Control card....