AT&T 3B2/300 Technical Reference Manual page 414

- - - - - - - - - - - - - - - - - - - - - - - - - - - FUNCTIONAL DESCRIPTION
From FLOPPY
From RESET From NVRAM
'
DISK DRIVE
/
'- Switch /
I
'- Batterv ,,,
I
T
CM519B BACKPLANE
*
I
Floppy Data
I
•ndrtrJ
M C r u e M = ~
( V B K ~ ~
Diagnostic.,.-,....,1...-'
Q
LED - LED
~
Power
~
LED
PIN 11
J
l"""'1
.+.'iV 1vrr, PINS 17, 40, 64,
- "" I --- 87, 90, 107, 110 TURE CA D
- •L...J
FEA R 1
FROM THROUGH
POWER
.....,+++--..;+.,-1.,.l?w\.JV/.lU.Vl'..i..i
"°'-----------t
FEATURE CARD 12
SUPPLY ""
I
-12V 1Vl2Nl PIN Ol CONNECTORS
., W+++-.+...,;;.=..i.:.=.:..----------:_P_IN_0_3_...,,,----------------...J
Connectors on
the Backplane
- -
Data Signals
Address Signals
Interrupt Signals
Bus Signals
1 0 RESET Signals
'
'
Data Signals
Address Signals
Interrupt Signals
Bus Signals
RESET Signals
SYSTEM BOARD
' I
MUXA(9-0)
BANKEN(2-0)
GO
CAS(3-0)
WE
MD(31-00)
MCB(ll-00)
RAS
SIZE(l-0)
SnEQUIP[O]
PROCESSOR BUS
CONNECTORS
(PBUSO-PBUS2)
••
Data Signals
Address Signals
Interrupt Signals
Bus Signals
RESET Signals
BUFFERED MICROBUS
CONNECTORS
(BUBO-BUB2)
MEMORY CARD
CONNECTORS
(MEMO-MEM3)
MEMORY
(Power Only)
Figure 3-51: CM519B (3B2/1000) Backplane - Functional Block Diagram
' .
FUNCTIONAL DESCRIPTION 3-161