HI-3585
May 2009
ARINC 429
Terminal IC with SPI Interface
PIN CONFIGURATIONS
(Top View)
N/C
RINA
RINA-40
N/C
VDD
N/C
V+
N/C
AOUT27
AOUT37
N/C
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
GENERAL DESCRIPTION
The HI-3585 from Holt Integrated Circuits is a silicon gate
CMOS device for interfacing a Serial Peripheral Interface
(SPI) enabled microcontroller to the ARINC 429 serial bus.
The device provides one receiver with user-programmable
label recognition for any combination of 256 possible
labels, 32 x 32 Receive FIFO and analog line receiver.
The independent transmitter has a 32 x 32 Transmit FIFO
and built-in line driver. The status of the transmit and
receive FIFOs can be monitored using the programmable
external interrupt pin, or by polling the HI-3585 Status
Register. Other features include a programmable option
of data or parity in the 32nd bit, and the ability to switch the
bit-signifiance of ARINC 429 labels. Pins are available
with different input resistance and output resistance
values which provides flexibility when using external
lightning protection circuitry.
The Serial Peripheral Interface minimizes the number of
host interface signals resulting in a small footprint device
that can be interfaced to a wide range of industry-standard
microcontrollers supporting SPI. Alternatively, the SPI
signals may be controlled using just four general purpose
I/O port pins from a microcontroller or custom FPGA. The
SPI and all control signals are CMOS and TTL compatible
and support 3.3V or 5V operation.
The HI-3585 applies the ARINC 429 protocol to the
receiver and transmitter. ARINC 429 databus timing
comes from a 1 MHz clock input, or an internal counter can
derive it from higher clock frequencies having certain fixed
values, possibly the external host processor clock.
-
-
-
-
-
-
-
-
-
-
-
N/C
RINB-40
RINB
N/C
N/C
N/C
MR
SI
CS
N/C
N/C
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
HI-3585PCI
HI-3585PCT
-
-
-
-
-
-
-
-
-
-
-
BOUT27
BOUT37
N/C
V-
N/C
TFLAG
N/C
N/C
RFLAG
N/C
N/C
44 - Pin Plastic 7mm x 7mm
Chip-Scale Package (QFN)
FEATURES
·
·
·
·
·
·
·
·
·
·
·
·
ARINC specification 429 compliant
3.3V or 5.0V logic supply operation
On-chip analog line driver and receiver connect
directly to ARINC 429 bus
Programmable label recognition for 256 labels
32 x 32 Receive FIFO and 32 x 32 Transmit FIFO
Independent data rates for Transmit and Receive
High-speed, four-wire Serial Peripheral Interface
Label bit-order control
32nd transmit bit can be data or parity
Self test mode
Low power
Industrial & extended temperature ranges
N/C - 1
RINB-40 - 2
RINB - 3
N/C - 4
N/C - 5
N/C - 6
MR - 7
SI - 8
CS - 9
N/C - 10
N/C - 11
44
43
42
41
40
39
38
37
36
35
34
- N/C
- RINA
- RINA-40
- N/C
- VDD
- N/C
- V+
- N/C
- AOUT27
- AOUT37
- N/C
N/C
N/C
N/C
SCK
N/C
GND
N/C
ACLK
SO
N/C
N/C
-
-
-
-
-
-
-
-
-
-
-
12
13
14
15
16
17
18
19
20
21
22
HI-3585PQI
HI-3585PQT
33 - BOUT27
32 - BOUT37
31 - N/C
30 - V-
29 - N/C
28 - TFLAG
27 - N/C
26 - N/C
25 - RFLAG
24 - N/C
23 - N/C
44 - Pin Plastic Quad Flat Pack (PQFP)
(DS3585 Rev. B)
HOLT INTEGRATED CIRCUITS
www.holtic.com
N/C - 12
N/C - 13
N/C - 14
SCK - 15
N/C - 16
GND - 17
N/C - 18
ACLK - 19
SO - 20
N/C - 21
N/C - 22
05/09
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
