CT2554 Aeroflex Circuit Technology, CT2554 Datasheet - Page 15

• Manufacturer Part Number: CT2554
• Description: Ct2553 / 2554 / 2555 / 2556 Advanced Integrated Mux Aim Hybrid For Mil-std-1553
• Manufacturer: Aeroflex Circuit Technology

Aeroflex Circuit Technology
Figure 18a – BC Set-Up
BC SETUP IMPLEMENTATION EXAMPLE
Figure 18a-c shows the BC mode examples for
two message transfers, BASIC setup, and BC
memory setup.
Message Transfer
LOAD MESSAGE COUNTER WITH
SECOND MESSAGE INTO STACK
1's COMPLEMENT OF MESSAGE
Example for Two
LOAD STARTING ADDRESS OF
LOAD STARTING ADDRESS OF
FIRST MESSAGE INTO STACK
LOAD SECOND MESSAGE
LOAD START REGISTER
LOAD CONFIGURATION
LOAD STACK POINTER
LOAD FIRST MESSAGE
REGISTER (BC MODE)
WITH THE VALUE 02
COUNT = FD (HEX)
INTO MEMORY
INTO MEMORY
START
GIVEN:
1. All values are in hex.
2. Map Area "A" is used and located from Address 0000 to Address
3. Message 1 located at Address 0140, is a TRANSMIT Command
4. Message 2 located at Address 0180, is a RECEIVE Command to
5. Configuration Register is assumed to be memory mapped at
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
00FF.
to RT# 1, Subaddress #1, Word Count = 1, transmitted on
BUS A.
location 2001. START/RESET Register is memory mapped at
location 2003.
RT#3, Subaddress #1, Word Count = 3, transmitted on BUS B.
2003,
2001,
0100,
0101,
0003,
0007,
0140,
0141,
0180,
0181,
0182,
0183,
0184,
2003,
BC Set-Up Instructions
Figure 18b – Sample
0001
0FFF
0000
00FD
0140
0180
0080
0C21
0000
1823
1111
2222
3333
0002
;
;
;
;
;
;
;
;
;
;
;
;
;
;
Issue Reset
Initialize Configuration Register
Initialize Stack Pointer
Initialize Message Count
Load Start Address Of Message #1
Load Start Address Of Message #2
Load BC Control Word Message #1
Load Command Word Message #1
Load BC Control Word Message #2
Load Command Word Message #2
Load Data Word #1 Message #2
Load Data Word #2 Message #2
Load Data Word #3 Message #2
Issue "Start"
15
SCDCT2553 REV B 8/6/99 Plainview NY [phone]
* Left empty for RTU’s status response.
** Loop Back word.
Figure 18c – BC SET-UP
0C
01
01
00
00
18
11
22
33
**
**
*
*
*
00FD
0000
40
80
80
21
00
23
11
22
33
Memory Map
0000
0003
0007
0100
0101
0140
0180
Descriptor
Stack Entries
Message #1
Message #2