ISO-CMOS
AC Electrical Characteristics
†
- TDM Bus (See Figures 13 and 14a, 14b).
respect to ground (V
SS
) unless otherwise stated.
MT8982
Voltages are with
Characteristics
1
2
3
4
5
6
7
8
9
10
11
12
13
Frame Pulse Input Setup Time
Frame Pulse Input Hold Time
Serial Output Delay;
Active to Active
Serial Output Delay;
Active to High Z
Serial Output Delay;
High Z to Active
Serial Input Setup Time
Serial Input Hold Time
Frame Pulse Output Delay
ODE Low to Serial Out High Z
ODE High to Serial Out Active
C4 Clock Pulse Width Low
C4 Clock Pulse Width High
C4 Clock Period
Sym
t
fs
t
fh
t
sdaa
t
sdaz
t
sdza
t
ss
t
sh
t
fd
t
saz
t
sza
t
c4l
t
c4h
t
c4
Min
10
5
Typ
‡
Max
Units
ns
Test Conditions
4 meg mode
5
100
200
150
20
10
70
125
50
25
35
150
100
100
244
209
219
ns
cycles
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C
L
=50pF, R
L
=1kΩ*
C
L
=50pF, R
L
=1kΩ
t
c4
= 244 ns
t
c4
= 244 ns
C
L
=50pF
C
L
=50pF
R
L
=1kΩ*
C
L
=150pF
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25
°
C and are for design aid only: not guaranteed and not subject to production testing.
* High impedance is measured by pulling to the appropriate rail with R
L
, with timing corrected to cancel time taken to discharge C
L
.
t
fd
F0o (ST-BUS)
t
fd
t
c4
t
c4l
t
c4h
C4i
F0o (GCI)
t
fd
t
fd
Figure 14a - TDM Bus Timing - F0o/Clock Timing
ODE
STo0-1
t
saz
t
sza
Figure 14b - ODE Timing
2-43
MITEL [ MITEL NETWORKS CORPORATION ]
