MT90868 Zarlink Semiconductor, Inc., MT90868 Datasheet - Page 53

• Manufacturer Part Number: MT90868
• Description: High Bandwidth Digital Switch - 8,192 x 8,192 channels among local streams and 1,024 x 1,024 channels among two selected backplane streams
• Manufacturer: Zarlink Semiconductor, Inc.

Advance Information
AC Electrical Characteristics
AC Electrical Characteristics
1
2
1
2
3
4
†Characteristics are over recommended operating conditions unless otherwise stated.
‡Typical figures are at 25 C, V
†Characteristics are over recommended operating conditions unless otherwise stated.
‡Typical figures are at 25 C, V
Note 1: High Impedance is measured by pulling to the appropriate rail with RL, with timing corrected to cancel time taken to
discharge C
LSTo0 - 63
8.192Mb/s
8.192Mb/s
LSTi0 - 63
tion testing.
BSTo/LSTo delay
Output Driver Enable (ODE) Delay
production testing.
Input data sampling point
Local Serial Input Set-up Time
Local Serial Input Hold Time
Local Serial Output Delay
BSTo/LSTo
BSTo/LSTo
FP8o
C8o
C8i/C8o
L
.
Characteristic
- Active to High-Z
- High-Z to Active
Per-Channel Tristate Timing
Figure 22 - Per-Channel and ODE Tristate Control Timing Diagrams
Characteristic
Valid Data
Ch127
Bit7
HiZ
DD_CORE
DD_CORE
Ch127
Bit0
at 1.8V and V
at 1.8V and V
t
DZ
†
†
Figure 21 - Local Data Timing Diagram
- Backplane and Local Output HiZ Timing
- Local Data Timing
Valid Data
HiZ
t
ZD
Sym
t
t
ODE
t
DZ,
ZD
DD_IO
DD_IO
t
SOD
at 3.3V and are for design aid only: not guaranteed and not subject to produc-
V
V
V
at 3.3V and are for design aid only: not guaranteed and not subject to
TT
TT
TT
Min
t
IDS
Sym
t
t
t
t
SOD
IDS
SIS
SIH
Bit7
Ch0
Typ
ODE
STo
13
Bit7
Ch0
‡
Min
90
5
5
ODE Pin Tristate Timing
t
SIS
Max
HiZ
30
25
t
SIH
Typ
91.6
t
ODE
‡
Valid Data
Units
ns
ns
Max
94
25
t
ODE
R
Note 1
R
Note 1
L
L
=1K, C
=1K, C
Bit6
Test Conditions
Ch0
Units
ns
ns
ns
ns
HiZ
MT90868
L
L
=30pF, See
=30pF, See
V
V
TT
TT
C
V
V
TT
L
TT
=30pF
Notes
53