MT8985AL Zarlink, MT8985AL Datasheet - Page 18

• Manufacturer Part Number: MT8985AL
• Description: Switch Fabric 256 x 256 16.384Mbps 5V 44-Pin MQFP Tray
• Manufacturer: Zarlink

Specifications of MT8985AL

• Package: 44MQFP
• Number Of Ports: 8
• Fabric Size: 256 x 256
• Switching Bandwidth: 16.384 Mbps
• Switch Core: Non-Blocking
• Port Speed: 2.048 Mbps
• Operating Supply Voltage: 5 V

AC Electrical Characteristics
Voltages are with respect to ground (VSS) unless otherwise stated.
† Timing is over recommended temperature & power supply voltages (V
‡ Typical figures are at 25
1
2
3
4
5
6
7
8
9
C4i
STo
STi
F0i
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
2.0V
0.8V
Clock Period
Pulse Width
Frame Width High
Frame Setup
Frame Hold
Data Delay/Clock Active to
Active
Serial Input Setup
Serial Input Hold
Clock Rise/Fall Time
Characteristics
Ch. 31
Bit 0
°
C and are for design aid only: not guaranteed and not subject to production testing.
Ch. 31
Bit 0
t
F0iS
†
t
t
F0iW
DAA
- GCI Timing
t
F0iH
t
Sym.
CL
Figure 13 - ST-BUS Timing
t
t
t
t
t
t
t
WFH
STiH
F0iS
F0iH
DAA
STiS
t
Zarlink Semiconductor Inc.
C4i
, t
r,
t
f
CH
t
Ch. 0
Bit 7
STiS
MT8985
Ch. 0
Bit 7
Min.
18
150
73
10
20
20
20
DD
=5V
±
t
STiH
5%, V
Typ.
244
122
244
t
45
C4i
SS
‡
=0V, T
Max.
A
300
150
190
190
100
10
=–40 to 85
t
CH
t
f
Ch. 0
Bit 6
°
t
Units
CL
C).
ns
ns
ns
ns
ns
ns
ns
ns
ns
Ch. 0
Bit 6
t
C
r
Test Conditions
L
=150 pF
Data Sheet
Ch. 0
Bit 5
Ch. 0
Bit 5