1553BRT-EBR Datasheet, PDF (17/28 Pages) Actel Corporation – Core1553BRT-EBR Enhanced Bit Rate 1553 Remote Terminal

Core1553BRT-EBR Enhanced Bit Rate 1553 Remote Terminal
Built-In Test Support
The Core1553BRT-EBR provides a BIT word. This is used to communicate fail information back to the bus controller. The
BIT word contains the information in Table 12.
Table 12 • BIT Word
Bit(s) Function
Description
15 BUSINUSE Indicates on which bus the transmit BIT word command was received
'0': Bus A '1': Bus B
14 LPBKERRB Indicates that the loopback logic detected an error on the transmitted data for Bus B. This bit is cleared by the
CLRERR input.
13 LPBKERRA Indicates that the loopback logic detected an error on the transmitted data for Bus A. This bit is cleared by the
CLRERR input.
12 SHUTDOWNB Indicates that Bus B is shutdown. This occurs after a transmitter shutdown mode code is received or the
hardware timer detected that the core transmitted for greater than 668 µs on Bus B.
11 SHUTDOWNA Indicates that Bus A is shutdown. This occurs after a transmitter shutdown mode code is received or the
hardware timer detected that the core transmitted for greater than 668 µs on Bus A.
10 TFLAGINH Terminal flag inhibit setting
9
WCNTERR A word count error has occurred. This bit is cleared by the CLRERR input.
8
MANERR
A Manchester encoding error has occurred. This bit is cleared by the CLRERR input.
7
PARERR
A parity error has occurred. This bit is cleared by the CLRERR input.
6
Reserved
Set to '0'
5
MEMFAIL
The backend memory interface failed to complete an access within the required time. This bit is cleared in the
CLRERR input.
4:0 VERSION
Indicates the core version
'01000': EBR version 1.0 (pre-production)
'01001': EBR version 2.0
Advanced v1.1
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