MT90840AP Zarlink, MT90840AP Datasheet - Page 54

• Manufacturer Part Number: MT90840AP
• Description: Switch Fabric 512 x 2430/512 x 512/2.373K x 2.373K 5V 84-Pin PLCC Tube
• Manufacturer: Zarlink

Specifications of MT90840AP

• Package: 84PLCC
• Number Of Ports: 16
• Fabric Size: 512 x 2430|512 x 512|2.373K x 2.373K
• Switch Core: Non-Blocking
• Port Speed: 8.192|4.096|2.048 Mbps
• Operating Supply Voltage: 5 V

Note: The depicted output timing occurs when TCP = 0. If TCP = 1, the byte at PDo0-7 port and the PPFT line will be
PCKT/PCKR
PDo0-7
PPFTo (PPFP=1)
PCKR
PDi0-7
PPFTo (PPFP=0)
PPFRi
output on the falling edge of the PCKT/PCKR clock.
tristate
Figure 27 - Parallel Port Transmit Timing (PFDI = 0, PPFT is an output)
t
za
byte n
Figure 28 - Parallel Port Receive Timing
t
df
t
df
t
stis
t
Byte 0
fs
Zarlink Semiconductor Inc.
t
stih
MT90840
t
t
sod
t
fh
t
clkh
clkh
byte 0
54
t
clk
t
clk
t
t
clkl
clkl
Byte 1
byte 1
t
t
df
df
t
az
tristate
Data Sheet