Northern Telecom BCS35 Replacement Manual page 30

14 CPU circuit pack
Table 2–3
CPU with DMA circuit pack (A1 and B1) options – part number: NT6M62BA
Device type
number
Jumper PINS:
1
(J3) 2–3
1–2:
Jumper In:
1
(JU1)
Out:
Jumper All
(JU2)
Jumper Out:
(JU3 &JU4)
Strap None used
DIP Switch On:
(SW2–1) Off:
DIP Switch On:
(SW2–2) Off:
DIP Switch Display Mode
(SW2–3)
(SW2–4) Err Cont Port
I/O 6 Port
(Invalid)
(Invalid)
Rotary Switch None used
297-1001-536 Standard 01.03 August 1996
Position/setting
8 KHz clock from
DMS–100 enabled.
60 Hz clock from AC
adapter, if present.
Enable 8KHz clock
receiver.
Disable 8KHz clock
receiver.
Enable additional wait
states. Disable
additional wait states.
Connects the internal
8KHz to pin 85 of the
backplane connector.
Outputs = Inputs
Output = Tristated
+5V output enabled
+5V output disabled
3 4
On Off
Off On
On On
Off Off
Function
Determines whether the DPP
uses 8 KHz from the DMS–100
or the optional ac clock.
Control operation of 8KHz clock
receiver.
Enable the addition of wait
states (up to 5) on the ABCD
inputs of the counter chip.
Attachment of peripherals; not
defined at this time.
Control Logic Analyzer Port.
Provide +5 V dc to Analyzer
Port connector (pin 21) for
powering certain types of
external testers. (Limited to
250ma.)
Monitors Error Control.
Monitors data written to I/O 6
Port.
Setting
Factory
On–site
1–2
pin 1 is closest
to gold finger
contacts.
In
Configured for 1
wait state in the
copper
tracings
Out
(Currently
unused)
1 = Off
2 = Off
3 = On
4 = Off