MT90820AL Zarlink, MT90820AL Datasheet - Page 30

• Manufacturer Part Number: MT90820AL
• Description: Switch Fabric 2K x 2K/1K x 1K/512 x 512 131.072Mbps 5V 100-Pin MQFP Tray
• Manufacturer: Zarlink

Specifications of MT90820AL

• Package: 100MQFP
• Number Of Ports: 16
• Fabric Size: 2K x 2K|1K x 1K|512 x 512
• Switching Bandwidth: 131.072 Mbps
• Switch Core: Non-Blocking
• Port Speed: 2.048|4.096|8.192 Mbps
• Operating Supply Voltage: 5 V

Note 1:
Figure 12 - WFP Bus Timing for High Speed Serial Interface (8.192Mb/s), when WFPS pin = 1
16.384MHz
High Impedance is measured by pulling to the appropriate rail with R
C
4.096MHz
L
.
HCLK
CLK
STo
STi
F0i
Bit 1, Ch 127
Bit 1, Ch 127
(ST-BUS or)
(GCI mode)
(WFPS mode)
Figure 13 - Serial Output and External Control
CSTo
CLK
CLK
STo
STo
t
HFPS
Bit 0, Ch 127
Bit 0, Ch 127
t
DIF
Valid Data
t
HFPW
Zarlink Semiconductor Inc.
HiZ
t
MT90820
SOD
Bit 7, Ch 0
t
SIS
Bit 7, Ch 0
t
DZ
t
t
HCL
ZD
30
t
HFPH
t
XCD
t
CP
t
t
Hr
SIH
Bit 6, Ch 0
Valid Data
HiZ
Bit 6, Ch 0
V
V
L
, with timing corrected to cancel time taken to discharge
TT
TT
t
CH
t
HCP
t
HCH
Bit 5, Ch 0
V
V
V
TT
TT
Bit 5, Ch 0
TT
t
Hf
t
CL
Bit 4, Ch 0
Bit 4, Ch 0
t
r
t
f
Data Sheet
V
V
V
V
V
V
V
TT
HM
TT
LM
TT
TT
TT