AT&T 3B2/300 Technical Reference Manual page 429

FUNCTIONAL D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - - -
From
CONSOLE
Port
.....
....
CM195AA ALARM INTERFACE CIRCUIT
'T'D . .,.,,...,,. .--rrr r. •..,.. 1
KA'"'''"''
1 1
""'
r,.
,TA rA .................
nPTPrT
CONS
Dt;rt;l\11'
n'C('FJVF nATA
O II,
C'ONTRnT
MULTI-
PLEX
CIRCUIT
TR\N.<:MTT nATA 7
n~TA ('ADDTt;D nFTFrT
- RFC'FTVF nATA 7
II,
rnNTRnT
-
I
I
MAJOR
ALARM I
LOGIC
Mll\JOR
I~
-
-
-
16-BIT
CSR
-
-
-
,
,
BUS
1/0
ADDRESS
DRIVER
CONTROL
DECODER
'~
PERIPHERAL INPUT/OUTPUT BUS INTERFACE
(BACKPLANE CONNECTOR)
Figure 3-55: CM195AA AIC Card - Functional Block Diagram
3-176 TECHNICAL REFERENCE MANUAL
-
TRMl
- -
TRM2
-
- -
ALM
UPS
EXT2
EXTl
To
External
CONSOLE
Devices
J
To
Alarm
Handling
Device
]
AC FAIL&
LOW BATTERY
INPUTS from
UPS
EXT MAJOR
INPUT
EXT MINOR
INPUT