ct1775 Aeroflex Circuit Technology, ct1775 Datasheet - Page 7

• Manufacturer Part Number: ct1775
• Description: Universal Macair/1553 Dumb Rtu Hybrid Preliminary Data Sheet
• Manufacturer: Aeroflex Circuit Technology

SCDCT1775 Rev B
COMM / DATA SYNC
SERIAL DATA OUT
TRI-STATE DATA
DATA SELECT
VALID WORD
VAL CMD WD
BROADCAST
MODE CODE
TAKE DATA
RT ENABLE
TRI-STATE DATA
DSC OUT
SYNC SELECT
DATA SELECT
(LOAD DATA)
FIGURE 4 – ENCODER DETAIL TIMING
ENC ENABLE
LATCH DATA
FIGURE 5 – DECODER DETAIL TIMING
SEND DATA
ESC OUT
START CYCLE
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
PREVIOUS
x x x x x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x
5
DON’T CARE
15
19
100ns MAX
DON’T CARE
DON’T CARE
DON’T CARE
6
CURRENT SYNC
150ns MAX
110ns MAX
x x x x x x x x x x x x x x
x x x x x x x x x x x x x x
x x x x x x x x x x x x x x
STROBE SYNC
180ns MIN
14
190ns MIN
0
240ns MIN
7
7
1
2
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
CURRENT
STROBE DATA
80ns MIN
0
80ns MIN
100ns MIN
70ns MIN
130ns MIN
130ns MIN
80ns MAX
0
3
1
CURRENT DATA
4
100ns MAX
50ns MAX
50ns MIN
100ns MAX
2
60ns MAX
60ns MAX
100ns MAX
110ns MAX