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ACT15530LI Schematic ( PDF Datasheet ) - Aeroflex Circuit Technology

Teilenummer ACT15530LI
Beschreibung CMOS Manchester Encoder / Decoder
Hersteller Aeroflex Circuit Technology
Logo Aeroflex Circuit Technology Logo 




Gesamt 15 Seiten
ACT15530LI Datasheet, Funktion
ACT15530
CMOS Manchester Encoder / Decoder
Features
• MIL-STD-1553 Compatible
• 1.25 Megabit/sec Maximum Data Rate
CIRCUIT TECHNOLOGY
www.aeroflex.com
• Sync Identification and Lock-in
• Clock Recovery
• Manchester II Encode / Decode
• Separate Encoder and Decoder Sections
• Low Operating Power
• Military Temperature Range -55°C to +125°C
• Monolithic – Single Chip – Construction
Valid Word 1
Encoder Shift Clock 2
Take Data 3
Serial Data Out 4
Decoder Clock 5
Bipolar Zero In 6
Bipolar One In 7
Unipolar Data In 8
Decoder Shift Clock 9
Command/Data Sync 10
Decoder Reset 11
VSS 12
24 VDD
23 Encoder Clock
22 Send Clock In
21 Send Data
20 Sync Select
19 Encoder Enable
18 Serial Data In
17 Bipolar One Out
16 Output Inhibit
15 Bipolar Zero Out
14 ÷ 6 Out
13 Master Reset
Figure 1: Pin Assignments
(24-Pin DIP/Flat Package – See Figure 18 for LCC Pkg)
• Available in Commercial and Industrial Temperature Ranges
• Several Package and Quality Options (Consult Factory for Details)
• Direct Replacement for the Obsolete Harris HD15530-9/-2/8 and GEC Plessey Marconi
MA15530 / MAS15530 parts
1
General Description
The ACT15530 is a high performance CMOS integrated circuit used to implement MIL-STD-1553 and
similar Manchester II encoded, time division multiplexed, serial data protocols. The device is divided into
two independent sections, encoder and decoder, with a common master reset. The function of the encoder
section is to produce the sync pulse and parity bit, and encode the data bits. The decoder section recognizes
the sync pulse, decodes the data bits and checks for parity.
The ACT15530 is fully guaranteed to support the 1 MHz data rate of MIL-STD-1553 over the full
temperature and supply voltage ranges. The device interfaces with CMOS, TTL or N-Channel support
circuitry and operates from a standard 5 volt supply. The circuit can also be used in many party line digital
data communications applications where high reliability command and control signals are required. Using
Aeroflex transceivers products (4400 Series) the Bit Error Rates (BER) and Word Error Rates (WER) of
MIL-STD-1553 can be achieved (Refer to MIL-STD-1553 Multiplex Applications Handbook
"MIL-HDBK-1553").
eroflex Circuit Technology – Data Bus Modules For The Future © SCD15330 REV B 7/28/99






ACT15530LI Datasheet, Funktion
Encoder Operation
The Encoder requires a single clock with a
frequency of twice the desired data rate applied
at the SEND CLOCK input. An auxiliary
divide by six counter is provided on chip which
can be utilised to produce the SEND CLOCK
by dividing the DECODER CLOCK.
The Encoder's cycle begins when
ENCODER ENABLE is high during a failing
edge of ENCODER SHIFT CLOCK x. This
cycle lasts for one word length or twenty
ENCODER SHIFT CLOCK periods. At the
next low-to-high transition of the ENCODER
SHIFT CLOCK, a high at SYNC SELECT
input actuates a command sync or a low will
produce a data sync for that word y. When the
Encoder is ready to accept data, the SEND
DATA output will go high and remain high for
sixteen ENCODER SHIFT CLOCK periods z.
During these sixteen periods the data should be
clocked into the SERIAL DATA input with
every low-high transition of the ENCODER
SHIFT CLOCK z - {. After the sync and the
Manchester II coded data are chip transmitted
through the BIPOLAR ONE and BIPOLAR
ZERO outputs, the Encoder adds on an
additional bit which is the parity for that word
|. At any time a low in OUTPUT INHIBIT
input will force both bipolar outputs to a high
state but will not affect the Encoder in any other
way. To abort the Encoder transmission a
positive pulse must be applied at MASTER
RESET. Anytime after or during this pulse, a
low to high transition on SEND CLOCK clears
the internal counters and initializes the Encoder
for a new word.
Timing
0 1 2 3 4 5 6 7 15 16 17 18 19
Send Clock
Encoder
Shift Clock
Encoder
Enable
Sync Select
Send Data
Serial Data In
Bipolar
One Out
Bipolar
Zero Out
Aeroflex Circuit Technology
Valid
Don’t Care
Don’t Care
15 14 13 12 11 10 3 2 1 0
1st 2nd 15 14 13 12 11
Half Half
Sync Sync 15 14 13 12 11
3 21 0 P
3 21 0 P
12
3
Figure 9: Encoder Operation
6
45
SCD15530 REV B 7/28/99 Plainview NY (516) 694-6700

6 Page









ACT15530LI pdf, datenblatt
D Pin 1
Notch
e
Alernative Pin Shapes
W
A
A1
H
b
0-15°
c
ME
Seating Plane
0-15°
e1
Valid Word 1
Encoder Shift Clock 2
Take Data 3
Serial Data Out 4
Decoder Clock 5
Bipolar Zero In 6
Bipolar One In 7
Unipolar Data In 8
Decoder Shift Clock 9
Command/Data Sync 10
Decoder Reset 11
VSS 12
24 VDD
23 Encoder Clock
22 Send Clock In
21 Send Data
20 Sync Select
19 Encoder Enable
18 Serial Data In
17 Bipolar One Out
16 Output Inhibit
15 Bipolar Zero Out
14 ÷ 6 Out
13 Master Reset
Ref. Min.
Nom.
A-
-
A1 0.38 (0.015)
b 0.35 (0.014)
-
-
c 0.20 (0.008)
-
D-
-
e - 2.54 (0.100) Typ
e1 - 15.24 (0.600) Typ
H 4.71 (0.185)
-
ME -
W-
-
-
Dimensions in mm (inches)
Max.
5.60 (0.220)
1.53 (0.060)
0.59 (0.023)
0.36 (0.014)
30.79 (1.212)
-
-
5.38 (0.212)
15.90 (0.626)
1.53 (0.060)
Aeroflex Circuit Technology
Figure 16: 24-Lead Ceramic DIL (Solder Seal) - Package Style C
12 SCD15530 REV B 7/28/99 Plainview NY (516) 694-6700

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