HI-3200_16 Datasheet, PDF (20/60 Pages) Holt Integrated Circuits – AVIONICS DATA MANAGEMENT ENGINE

HI-3200, HI-3201
ARINC 429 Muxed FIFO Flags Register
(Address 0x800C)
AMFFA7MFFA6MFFA5MFFA4MFFA3MFFA2MFF1
76543210
MSB
LSB
Bit Name
7 AMFF7
6 AMFF6
5 AMFF5
4 AMFF4
3 AMFF3
2 AMFF2
1 AMFF1
0 AMFF0
R/W Default Description
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 7. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 7
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 6. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 6
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 5. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 5
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 4. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 4
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 3. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 3
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 2. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 2
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 1. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 1
R
0 This bit gives the FIFO Flag Status for ARINC 429 Receive Channel 0. The FIFO Flag Status is
set according to the value of the FFS[1:0] bits in the ARINC 429 Rx Control Register 0
ARINC 429 FIFO Threshold Value Register
Threshold
FIFO THRESHOLD VALUE
(Address 0x8021)
000
76543210
MSB
LSB
Default = 0x10
Threshold Value
00000
00001
00010
00011
Description
Threshold flag is set if at least 1 message is in FIFO (Same as FIFO NOT EMPTY FLAG)
Threshold flag is set if more than one message are in the FIFO
Threshold flag is set if more than two messages are in the FIFO
Threshold flag is set if more than three messages are in the FIFO
10000
Threshold flag is set if more than sixteen messages are in the FIFO (default)
11111
Threshold flag is set if 32 messages are in the FIFO (Same as FIFO FULL FLAG)
ARINC 429 Loop-back Self-Test
The HI-3200 includes an ARINC 429 loop-back feature,
which allows users to exercise the ARINC 429 transmit and
receive channels for self-test purposes. The ARINC 429
Loop-Back register, ALOOP defines which receiver
channels are in loop-back mode. When a “1” is
programmed in the ALOOP bit position for a receiver, then
its ARINC 429 bus connection to the external pins is broken
and instead the input is connected to one of the four ARINC
429 transmit channels. Transmit channel 0 is connected to
receive channel 0 and 1, transmit channel 1 is connected to
receive channels 2 and 3, and so on.
When in loop-back mode, incoming ARINC 429 messages
are ignored by the HI-3200. When running in loop-back
mode the ARINC 429 transmit pins may be disabled by
pulling the TXMSK input high. This prevents test messages
from being output to the external ARINC 429 transmit
buses.
HOLT INTEGRATED CIRCUITS
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