ARX2412 Просмотр технического описания (PDF) - Aeroflex Corporation
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ARX2412 Datasheet PDF : 7 Pages
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1MHZ CLOCK
BIT TIMES
POWER ON CLEAR
POC (INPUT)
RX DATA (INPUT)
RX DATA (INPUT)
RECEIVER SYNC TYPE
(OUTPUT)
RECEIVER BUSY
(OUTPUT)
VALID WORD
(OUTPUT)
VU INT (OUTPUT)
VALID ADDRESS
SACK (INPUT)
SYSTEM ACKNOWLEDGE
COMMAND SYNC
CLEAR (INPUT)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6
COMMAND 5 BIT
SYNC ADDRESS
0 0 01 0 0 0 0 0 0 0 0 0 0 1
DATA
SYNC
1
5µs
NOM
5µs
NOM
16µs NOM
COMMAND SYNC
16µs NOM
TAKE DATA
500ns NOM
4µs
NOM
16µs NOM
DATA SYNC
16µs NOM
TAKE DATA
500ns NOM
2µs NOM
100 ns MIN
Note: A Command Sync Clear must be provided for
every Receiver Sync Type low to high transition.
2
µS
DO NOT CUE FROM VALID WORD
2µs NOM
50ns MIN to 20µs MAX
25ns MIN to 1µs MAX
100ns
MIN
Figure 2 – RECEIVER SECTION TIMING FOR DECODE OPERATION
1MHZ CLOCK
1 2 3 4 5----
BIT TIMES
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4
POWER ON CLEAR
POC (INPUT)
OUTPUT SELECT
(INPUT)
SYNC SELECT
(INPUT)
ENCODER ENABLE
(INPUT)
XMTR BUSY
(OUTPUT)
3.5µs
NOM
1µs NOM
TX DATA (OUTPUT)
1µs NOM 100ns MIN
(OR DELAY)
1.0 µs MIN
DON’T CARE
0.5 µs MAX
BRING LOW NO LATER THAN XMTR BUSY HIGH TO LOW
1.0 µs MIN
Drop Enable 1µs MIN Before
XMTR Busy To Stop Next Word
SEND DATA
16µs NOM
4µs
NOM
SEND DATA
16µs NOM
COMMAND
SYNC
0 0 0 0 1 0 01 1 1 0 1 0 0 01 1
DATA
SYNC
0 0 1 1 1 1 1 0 00 0 1 0 1 1 1 0
TX DATA (OUTPUT)
Figure 3 – TRANSMITTER SECTION TIMING FOR ENCODE OPERATION
Aeroflex Circuit Technology
5
SCD2412 REV C 10/19/98 Plainview NY (516) 694-6700
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