82P2821BH IDT, Integrated Device Technology Inc, 82P2821BH Datasheet - Page 145

• Manufacturer Part Number: 82P2821BH
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82P2821BH

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Not Compliant

8.13.5.2Write Cycle Specification
Physical And Electrical Specifications
IDT82P2821
Symbol
t
t
t
t
t
t
WSW
t
HCW
AEW
CSD
t
VAS
VAH
AED
t
DV
DH
Valid ALE signal width
Valid write signal width
WR + CS to valid hold time
Valid WR + CS falling edge delay after ALE falling edge
Valid address to ALE setup time
Valid address to ALE hold time
Valid ALE rising edge delay after WR + CS rising edge
Data available time before valid write signal rising edge
Valid data hold time after valid write signal rising edge before the next AS rising edge
Figure-68 Parallel Intel Multiplexed Microprocessor Interface Write Cycle
WR + CS
D[7:0]
RDY
ALE
t
AEW
Note: RD shall be tied to high.
Parameter
t
VAS
Valid address
t
CSD
t
VAH
21(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
145
t
WSW
t
DV
Valid Data
t
DH
5 or wait until RDY acti-
t
47 (T1/J1) / 35 (E1)
AED
t
HCW
vated
Min
5
0
5
5
5
5
5
MAX
February 6, 2009
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns