1553BRT-EBR Datasheet, PDF (15/28 Pages) Actel Corporation – Core1553BRT-EBR Enhanced Bit Rate 1553 Remote Terminal

Core1553BRT-EBR Enhanced Bit Rate 1553 Remote Terminal
Loopback Tests
The Core1553BRT-EBR performs loopback testing on all of its transmissions. The transmit data is fed back into the
receiver and each transmitted word is compared. If an error is detected, the loopback fail bit is set in the TSW and also
in the BIT word.
Table 10 • Supported Mode Codes
T/R Mode
Bit Code
Function and Effect
Data Core Broadcast
Word Supports Allowed
1
00000 Dynamic Bus Control
No
No
No
0
The core does not support bus controller functions, so it will set the message
error and the dynamic bus control bit in the status word.
1
00001 Synchronize
No
Yes
Yes
1
The core will assert its SYNCNOW output after the command word has been
received.
1
00010 Transmit Status Word
2
The core retransmits the last status word.
No
Yes
No
1
00011 Initiate Self Test
No
Yes
Yes
3
The core does not support self test. Since the core supports the transmit BIT
word mode code, this command is treated as legal and will not set a message
error.
1
00100 Reserved
4
No
No
No
1
00101 Reserved
5
No
No
No
1
00110 Inhibit Terminal Flag
No
Yes
Yes
6
The core will mask the TFLAG input and the terminal flag bit in the status word
will be forced to zero.
1
00111 Override Inhibit Terminal Flag
7
The core will re-enable the TFLAG input.
No
Yes
Yes
1
01000 Reset Remote Terminal
No
Yes
Yes
8
The core will assert its BUSRESET output after the command word has been
received. It will also reset itself.
1
10000 Transmit Vector Word
Yes
Yes
No
16 The core will transmit a single data word that contains the value on the VWORD
input.
1
10010 Transmit Last Command Word
Yes
Yes
No
18 The core will transmit a single data word that contains the last command word
received.
1
10011 Transmit Bit Word
Yes
Yes
No
19 The core will transmit a single data word that contains the extended core status
information. The value of this word is defined in Table 13 on page 18.
0
10001 Synchronize with Data
Yes
Yes
Yes
17 The core will assert its SYNCNOW output after the data word has been
received.
0
10100 Reserved
20
Yes
No
No
0
10101 Reserved
21
Yes
No
No
Advanced v1.1
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