hi-15530 Holt Integrated Circuits, Inc., hi-15530 Datasheet - Page 2

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hi-15530

Manufacturer Part Number
hi-15530
Description
5v / 3.3v Manchester Encoder / Decoder
Manufacturer
Holt Integrated Circuits, Inc.
Datasheet

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Part Number:
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PIN DESCRIPTIONS
SIGNAL
VALID WORD
ENCODER SHIFT CLOCK
TAKE DATA
SERIAL DATA OUT
DECODER CLOCK
BIPOLAR ZERO IN
BIPOLAR ONE IN
UNIPOLAR DATA IN
DECODER SHIFT CLOCK
COMMAND /
DECODER RESET
GND
MASTER RESET
¸
BIPOLAR ZERO OUT
OUTPUT INHIBIT
BIPOLAR ONE OUT
SERIAL DATA IN
ENCODER ENABLE
SYNC SELECT
SEND DATA
SEND CLOCK IN
ENCODER CLOCK
VDD
6 OUT
DATA
SYNC
SECTION
DECODER
ENCODER
DECODER
DECODER
DECODER
DECODER
DECODER
DECODER
DECODER
DECODER
DECODER
ENCODER
ENCODER
ENCODER
ENCODER
ENCODER
ENCODER
ENCODER
ENCODER
ENCODER
ENCODER
BOTH
BOTH
BOTH
HOLT INTEGRATED CIRCUITS
FUNCTION
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
POWER
POWER
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
A high output signals the receipt of a valid word
Shifts data into the encoder on a low to high transition
Output is high during receipt of data after identification of a Sync
Pulse and two valid Manchester data bits.
Received Data output in NRZ format
12x the data rate. Clock for the transition finder and synchronizer,
which generates the internal clock for the remainder of the decoder
A high input indicates the 1553 bus is in its negative state.
This pin must be held high when the Unipolar input is used
A high input indicates the 1553 bus is in the positive state.
This pin must be held low when the Unipolar input is used
Input for unipolar data to the transition finder. Must be held low when
Not in use
Provides the DECODER CLOCK divided by 12, synchronized by the
recovered serial data
A high on this pin occurs during the output of decoded data which
was preceded by a Command (or Status) synchronizing character. A
low output indicates a Data synchronizing character
A high applied to this pin during a DECODER SHIFT CLOCK rising
edge resets the bit counter
0V supply
A high on this pin clears the 2:1 counters in both Encoder and
Decoder and resets the divide-by-6 circuit
Provides ENCODER CLOCK divided by 6
An active low output intended to drive the zero or negative sense of
a MIL-STD-1553 Line Driver
A low inhibits the
forcing them to inactive high states
An active low output intended to drive the one or positive sense on a
MIL-STD-1553 Line Driver
Accepts serial data at the rate of the ENCODER SHIFT CLOCK
A high on this pin initiates the encode cycle. (Subject to the
preceeding cycle being complete)
Actuates a Command Sync for an input high and a Data Sync for a
low
An active high output which enables the external source of serial
Data
Clock input at 2 times the Data rate, usually driven by
Input to the divide by 6 circuit. Normal frequency is Data rate x12
3.0 V to 5.5 V power supply pin
2
HI-15530
BIPOLAR ZERO OUT
DESCRIPTION
and
BIPOLAR ONE OUT
¸
6 OUT
by

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