FN2952.2 March 7, 2006 Pin Description PIN TYPE SYMBOL SECTION DESCRIPTION 1 O VW Decoder Output high indicates receipt of a VALID WORD. " />
參數(shù)資料
型號(hào): HD3-6408-9Z
廠商: Intersil
文件頁(yè)數(shù): 5/11頁(yè)
文件大小: 0K
描述: IC ASMA ADT CMOS 1.25MHZ 24DIP
標(biāo)準(zhǔn)包裝: 90
類型: Manchester 編碼器/解碼器
應(yīng)用: 安全系統(tǒng)
電壓 - 電源,模擬: 4.5 V ~ 5.5 V
電壓 - 電源,數(shù)字: 4.5 V ~ 5.5 V
安裝類型: 通孔
封裝/外殼: 24-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 24-PDIP
包裝: 管件
3
FN2952.2
March 7, 2006
Pin Description
PIN
TYPE
SYMBOL
SECTION
DESCRIPTION
1
O
VW
Decoder
Output high indicates receipt of a VALID WORD.
2
O
ESC
Encoder
ENCODER SHIFT CLOCK is an output for shifting data into the Encoder. The
Encoder samples SDI on the low-to-high transition of ESC.
3
O
TD
Decoder
TAKE DATA output is high during receipt of data after identification of a sync pulse
and two valid Manchester data bits.
4
O
SDO
Decoder
SERIAL DATA OUT delivers received data in correct NRZ format.
5
I
DC
Decoder
DECODER CLOCK 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.
6
I
BZI
Decoder
A high input should be applied to BIPOLAR ZERO IN when the bus is in its negative
state. This pin must be held high when the Unipolar input is used.
7
I
BOI
Decoder
A high input should be applied to BIPOLAR ONE IN when the bus is in its positive
state, this pin must be held low when the Unipolar input is used.
8
I
UDI
Decoder
With pin 6 high and pin 7 low, this pin enters UNIPOLAR DATA IN to the transition
finder circuit. If not used this input must be held low.
9
O
DSC
Decoder
DECODER SHIFT CLOCK output delivers a frequency (DECODER CLOCK
÷ 12),
synchronized by the recovered serial data stream.
10
O
CDS
Decoder
COMMAND/DATA SYNC output high occurs during output of decoded data which
was preceded by a Command synchronizing character. A low output indicates a
Data synchronizing character.
11
I
DR
Decoder
A high input to DECODER RESET during a rising edge of DECODER SHIFT
CLOCK resets the decoder bit counting logic to a condition ready for a new word.
12
I
GND
Both
GROUND supply pin.
13
I
MR
Both
A high on MASTER RESET clears the 2:1 counters in both the encoder and
decoder and the
÷ 6 counter.
14
O
DBS
Encoder
DIVIDE BY SIX is an output from 6:1 divider which is driven by the ENCODER
CLOCK.
15
O
BZO
Encoder
BIPOLAR ZERO OUT is a active low output designed to drive the zero or negative
sense of a bipolar line driver.
16
I
OI
Encoder
A low on OUTPUT INHIBIT forces pin 15 and 17 high, their inactive states.
17
O
BOO
Encoder
BIPOLAR ONE OUT is an active low output designed to drive the one or positive
sense of a bipolar line driver.
18
I
SDI
Encoder
SERIAL DATA IN accepts a serial data stream at a data rate equal to ENCODER
SHIFT CLOCK.
19
I
EE
Encoder
A high on ENCODER ENABLE initiates the encode cycle. (Subject to the preceding
cycle being completed).
20
I
SS
Encoder
SYNC SELECT actuates a Command sync for an input high and data sync for an
input low.
21
O
SD
Encoder
SEND DATA is an active high output which enables the external source of serial
data.
22
I
SCI
Encoder
SEND CLOCK IN is 2X the Encoder data rate.
23
I
EC
Encoder
ENCODER CLOCK is the input to the 6:1 divider.
24
I
VCC
Both
VCC is the +5V power supply pin. A 0.1F decoupling capacitor from VCC (pin 24)
to GND (pin 12) is recommended.
HD-6408
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