hd1-15530-8 Intersil Corporation, hd1-15530-8 Datasheet - Page 2

• Manufacturer Part Number: hd1-15530-8
• Description: Cmos Manchester Encoder-decoder
• Manufacturer: Intersil Corporation

Block Diagrams
Pin Description
12
13
22
14
23
NUMBER
PIN
10
11
12
13
14
15
16
17
SEND CLK IN
ENCODER
GND
MASTER RESET
1
2
3
4
5
6
7
8
9
÷
6 OUT
CLK
COUNTER
TYPE
÷
O
O
O
O
O
O
O
O
O
BIT
6
I
I
I
I
I
I
I
I
÷
VALID WORD
ENCODER SHIFT
CLOCK
TAKE DATA
SERIAL DATA OUT
DECODER CLOCK
BIPOLAR ZERO IN
BIPOLAR ONE IN
UNLPOLAR DATA IN
DECODER SHIFT
CLOCK
COMMAND SYNC
DECODER RESET
GROUND
MASTER RESET
÷
BIPOLAR ZERO OUT
OUTPUT INHIBIT
BIPOLAR ONE OUT
SEND
2
DATA
21
6 OUT
SHIFT CLK
ENCODER
ENCODER
2
DATA IN
SERIAL
NAME
18
ENCODER
ENABLE
19
CHARACTER
FORMER
SELECT
20
SYNC
SECTION
Decoder
Encoder
Decoder
Decoder
Decoder
Decoder
Decoder
Decoder
Decoder
Decoder
Decoder
Encoder
Encoder
Encoder
Encoder
17
15
Both
Both
OUTPUT
INHIBIT
BIPOLAR
ONE OUT
BIPOLAR
ZERO OUT
V
CC
HD-15530
Output high indicates receipt of a valid word, (valid parity and no Manches-
ter errors).
Output for shifting data into the Encoder. The Encoder samples SDI on the
low-to-high transition of Encoder Shift Clock.
Output is high during receipt of data after identification of a sync pulse and
two valid Manchester data bits.
Delivers received data in correct NRZ format.
Input drives the transition finder, and the synchronizer which in turn
supplies the clock to the balance of the decoder, input a frequency equal to
12X the data rate.
A high input should be applied when the bus is in its negative state. This pin
must be held high when the Unipolar input is used.
A high input should be applied when the bus is in its positive state. This pin
must be held low when the Unipolar input is used.
With pin 6 high and pin 7 low, this pin enters unipolar data into the transition
finder circuit. If not used this input must be held low.
Output which delivers a frequency (DECODER CLOCK
nized by the recovered serial data stream.
Output of a high from this pin occurs during output of decoded data which
was preceded by a Command (or Status) synchronizing character. A low
output indicates a Data synchronizing character.
A high input to this pin during a rising edge of DECODER SHIFT CLOCK
resets the decoder bit counting logic to a condition ready for a new word.
Ground Supply pin.
A high on this pin clears 2:1 counters in both Encoder and Decoder, and
resets the
Output from 6:1 divider which is driven by the ENCODER CLOCK.
An active low output designed to drive the zero or negative sense of a
bipolar line driver.
A low on this pin forces pin 15 and 17 high, the inactive states.
An active low output designed to drive the one or positive sense of a bipolar
line driver.
24
16
143
UNIPOLAR
DECODER
BIPOLAR
BIPOLAR
MASTER
ZERO IN
÷
DATA IN
ONE IN
RESET
6 circuit.
CLK
6
5
13
8
7
SYNCHRONIZER
TRANSITION
DECODER
FINDER
DESCRIPTION
RESET
DECODER
11
CHARACTER
RATE
COUNTER
CLK
IDENTIFIER
BIT
BIT
PARITY
CHECK
÷
10
4
12), synchro-
3
9
1
TAKE
DATA
COMMAND/
DATA SYNC
SERIAL
DATA OUT
DECODER
SHIFT
CLK
VALID
WORD