CT2577 Datasheet, PDF (22/41 Pages) Aeroflex Circuit Technology – APPLICATION NOTE 108

CT2577 /79 RT/BC Device Memory Map Breakdown
The following description is for devices that have internal 3K memory.
ALL 'User' Locations are Read/Writable
0 0 00 00 000 0000 FFF
0 0 00 01 001 0002 FFE
BCST (Binary)
T/R (Binary)
Subaddress (Hex)
Word Count (Hex)
Composite VME Address 16-bit mode (Hex)
Composite VME Address 8-bit mode (Hex) = Lower Byte
Upper Byte = Address +1
Composite MULTIbus Address 16-bit mode (Hex)
FUNCTION
W - Command Word (2nd RT-RT Command) (BC)
TRIGGERS BC - BUS ’X’ Operation
R - Received STATUS (FIFO Stack) (BC)
W - Resets ALL Status Bits (RT)
R - RT Received COMMAND (RT)
R/W - 1st RT-RT COMMAND (BC)
R/W - Memory Address 002 through 00Fh (BC)
W - Sets STATUS Word Flags as Described below (RT)
R - ALL Status Bits WRITTEN (RT) via Addresses 001---
00F plus BURST Control as Follows:
x = Don't Care
Y = STATUS Word Bits Selected via WRITEs to 001 through 00Fh
B = BURST Control Selected via WRITEs to 402 through 405h
xxxx xxxx 00 B B Y Y Y Y
DBC
SSF
BUSY
SR
BTL WRITE ENABLED (TX)
BTL READ ENABLED (RX)
APPLICATION NOTE #108
22
Released 9/98