mt90868ag2 Zarlink Semiconductor, mt90868ag2 Datasheet - Page 63

• Manufacturer Part Number: mt90868ag2
• Description: 32,768 X 8,192 Channels High Bandwidth Digital Switch With Up To 128 Streams On Backplane And 128 Streams On Local And Data Rates From 8 To 32 Mbps
• Manufacturer: Zarlink Semiconductor

Data Sheet
† Characteristics are over recommended operating conditions unless otherwise stated.
‡ Typical figures are at 25°C, V
AC Electrical Characteristics
† Characteristics are over recommended operating conditions unless otherwise stated.
‡ Typical figures are at 25°C, V
Note 1:
AC Electrical Characteristics
1
2
1
2
3
4
LSTo0 - 63
8.192Mb/s
8.192Mb/s
LSTi0 - 63
BSTo/LSTo delay
Output Driver Enable (ODE) Delay
Input data sampling point
Local Serial Input Set-up Time
Local Serial Input Hold Time
Local Serial Output Delay
High Impedance is measured by pulling to the appropriate rail with RL, with timing corrected to cancel time taken to
discharge C
BSTo/LSTo
BSTo/LSTo
FP8o
C8o
C8i/C8o
Characteristic
- Active to High-Z
- High-Z to Active
L
.
Per-Channel Tristate Timing
Figure 22 - Per-Channel and ODE Tristate Control Timing Diagrams
Characteristic
Valid Data
DD_CORE
DD_CORE
Ch127
Bit7
HiZ
at 1.8V and V
at 1.8V and V
Ch127
Bit0
t
DZ
†
†
Figure 21 - Local Data Timing Diagram
- Backplane and Local Output HiZ Timing
- Local Data Timing
DD_IO
DD_IO
Valid Data
HiZ
t
ZD
at 3.3V and are for design aid only: not guaranteed and not subject to production testing.
at 3.3V and are for design aid only: not guaranteed and not subject to production testing.
Sym
t
t
ODE
t
Zarlink Semiconductor Inc.
DZ,
ZD
t
SOD
V
V
V
TT
TT
TT
Min
t
IDS
Sym
t
t
t
t
SOD
IDS
SIH
SIS
Bit7
Ch0
Typ
ODE
STo
13
Bit7
Ch0
‡
Min
3.5
1.5
90
7
t
ODE Pin Tristate Timing
SIS
Max
HiZ
30
25
t
SIH
Typ
91.6
12.5
t
ODE
‡
Valid Data
Units
ns
ns
Max
94
18
t
ODE
R
Note 1
R
Note 1
L
L
=1K, C
=1K, C
Bit6
Ch0
Test Conditions
Units
ns
ns
ns
ns
HiZ
L
L
=30pF, See
=30pF, See
V
V
TT
TT
C
V
V
TT
L
TT
=30pF
Notes
63