AT&T 3B2/300 Technical Reference Manual page 412

- - - - - - - - - - - - - - - - - - - - - - - - - - - FUNCTIONAL DESCRIPTION
CM519A BACKPLANE
From FLOPPY
DISK DRIVE
I •
'
From RESET
~witch
I
/
From NVRAM
Battery
Diagnostic--1--1
Q
LED - LED
~
I
Floppy Data
and Ctr!
~
I
~'""'"'~~
~
(VBKU~~
Power ..:
LED
J-
-
FR OM
PO WER
SUP PLY
Connectors on
the Backplane
[]
tJ
. .
-SV
,vrr,
+1?V IV1?P\
- 1?" " "
°''"
I~
Data Signals
Address Signals
Interrupt Signals
Bus Signals
RESET Signals
I
VCACHE
I
1
•......i._.,-----1,
CONNECTOR
.
PIN 38
I
. - t - - - - - t P I N 35 BUS
(BUB Power Only)
PIN 11
PINS 17, 40, 64,
87, 90, 107, 110
FEATURE CARD 1
THROUGH
PIN 01
FEATURE CARD 12
PIN 03
CONNECTORS
Data Signals
Address Signals
Interrupt Signals
Bus Signals
RESET Signals
SYSTEM BOARD
Data Signals
Address Signals
Interrupt Signals
Bus Signals
RESET Signals
MD(31-00)
MCB(ll-00)
MUXA(9-0)
BANKEN(2-0)
GO
CAS(3-0)
WE
RAS
SlZE(l-0)
SnEQUlP[O]
MEMORY CARD
CONNECTORS
(MEMO-MEM3)
BUFFERED MICROBUS
CONNECTORS
(BUBO-BUB3)
MEMORY
(Power Only)
Figure 3-50: CM519A (3B2/600 and 700) Backplane - Functional Block Diagram
FUNCTIONAL DESCRIPTION
3-159