hi-3587 Holt Integrated Circuits, Inc., hi-3587 Datasheet - Page 2

• Manufacturer Part Number: hi-3587
• Description: Transmitter With Spi Interface
• Manufacturer: Holt Integrated Circuits, Inc.

BLOCK DIAGRAM
PIN DESCRIPTIONS
SIGNAL
BOUT37
BOUT27
AOUT27
AOUT37
TFLAG
ACLK
GND
SCK
VDD
MR
CS
SO
V+
SI
V-
ACLK
SCK
FUNCTION
SO
CS
SI
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
POWER
POWER
POWER
POWER
INPUT
INPUT
INPUT
INPUT
INPUT
Interface
SPI
Master Reset. A positive pulse clears the Transmit data FIFO and flags
SPI interface serial data input
Chip select. Data is shifted into SI and out of SO when
SPI Clock. Data is shifted into or out of the SPI interface using SCK
Chip 0V supply
Master timing source for the ARINC 429 transmitter
SPI interface serial data output
Goes high when ARINC 429 transmit FIFO is empty (CR14=0), or full (CR14=1)
Minus 5V power supply to ARINC 429 Line Driver
ARINC line driver negative output. Direct connection to ARINC 429 bus
Alternate ARINC line driver negative output. Requires external 10 ohm resistor
Alternate ARINC line driver positive output. Requires external 10 ohm resistor
ARINC line driver positive output. Direct connection to ARINC 429 bus
Positive 5V power supply to ARINC 429 Line Driver
3.3V or 5.0V logic power
Control Register
Divider
ARINC
Clock
HOLT INTEGRATED CIRCUITS
DESCRIPTION
Status Register
ARINC 429
Data FIFO
Transmit
HI-3587
2
VDD
GND
ARINC 429
Formatter
Transmit
CS
ARINC 429
Line Driver
is low.
27 Ohm
27 Ohm
10 Ohm
10 Ohm
PULL UP / DOWN
10K ohm pull-down
10K ohm pull-down
10K ohm pull-up
10K ohm pull-down
10K ohm pull-down
V+
AOUT37
AOUT27
BOUT27
BOUT37
V-
TFLAG