MA28139 Datasheet, PDF (25/34 Pages) Dynex Semiconductor – OBDH Bus Terminal

AC CHARACTERISICS
No. Parameter
Condition
T1 CITMOD to RR1n, RR2, RR3n, RR4, BR1n, CTU mode
BR2, BR3n, BR4
T2 CITMOD to NRE, RRE, NBE, RBE
CTU mode
T3/ CITSYNC, CITINV to CITCLK ↑ (setup/hold) CTU mode
T3a
T4/4a RRTDATA to CITMOD ↓ (setup/hold)
T5/5a RBTDATA to CITMOD ↓ (setup/hold)
CTU mode
CTU mode
T6/6a RBTEN to CITMOD ↑ (setup/hold)
T7/7a CITCLK to CITMOD ↑ (setup/hold)
CTU mode
CTU mode
T8 NIDS1n, NIDS2n, RIDS1n, RIDS2n to RR1n RTU mode
RR2, RR3n, RR4, BR1n, BR2, BR3n, BR4
T9 NIDS1n, NIDS2n, RIDS1n, RIDS2n to NRE RTU mode
RRE, NBE, RBE
T10/ RRTDATA to NIDS1n, NIDS2n, RIDS1n,
T10a RIDS2n ↓ (setup/hold)
RTU mode
T11/ RBTDATA to NIDS1n, NIDS2n, RIDS1n,
T11a RIDS2n ↓ (setup/hold)
RTU mode
T12 RRTEN to NIDS1n, NIDS2n, RIDS1n, RIDS2n ↑ setup RTU mode
T12a RRTEN to NIDS1n, NIDS2n, RIDS1n, RIDS2n ↑ hold RTU mode
T13 RBTEN to NIDS1n, NIDS2n, RIDS1n, RIDS2n ↑ setup RTU mode
T13a RBTEN to NIDS1n, NIDS2n, RIDS1n, RIDS2n ↑ hold RTU mode
Min.
-
-
10
10
10
10
10
-
-
10
10
0
35
0
35
Table 4: Bus Adaptor Transmitter Characterisation
Max.
45
55
-
-
-
-
-
55
75
-
-
-
-
-
-
MA28139
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
No. Parameter
Condition
T14 NIDS1n, NIDS2n, RIDS1n, RIDS2n ↓ to
RTU mode
RIRSYNC, RIRCLK, RIRDATA, RIRVAL valid
T15 NRDS1n, NRDS2n, RRDS1n, RRDS2n ↓ to RTU mode
RRRCLK, RRRDATA valid
T16 NBDS1n, NBDS2n, RBDS1n, RBDS2n to
RBRCLK, RBRDATA valid
RTU mode
T17 NRDS1n, NRDS2n, RRDS1n, RRDS2n ↓ to
RRRVAL ↓
RTU mode
T18 NBDS1n, NBDS2n, RBDS1n, RBDS2n to
RBRVAL ↓
RTU mode
T19 RRRINIT to RRRVAL ↑
RTU mode
T20 RBRINIT to RBRVAL ↑
RTU mode
T21 NIDS1n, NIDS2n, RIDS1n, RIDS2n pulse
width low (min.)
RTU mode
T22 NRDS1n, NRDS2n, RRDS1n, RRDS2n pulse RTU mode
width low (min.)
T23 NBDS1n, NBDS2n, RBDS1n, RBDS2n pulse RTU mode
width low (min.)
Min.
-
-
-
-
-
-
-
12
12
12
Table 5: Bus Adaptor Receiver Characterisation
Max.
80
55
55
55
55
30
30
-
-
-
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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