TXC-04252AIPQ Transwitch Corporation, TXC-04252AIPQ Datasheet - Page 29

• Manufacturer Part Number: TXC-04252AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-04252AIPQ

• Pin Count: 160
• Screening Level: Industrial
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

Notes: For illustration purposes, a single TU/VT is shown. The location of this TU/VT corresponds to TU/VT number 21.
ACLK clock period
ACLK duty cycle, t
AC1J1V1 setup time before ACLK
AC1J1V1 hold time after ACLK
ASPE setup time before ACLK
ASPE hold time after ACLK
A(7-0)/APAR data /parity out valid delay from
ACLK
A(7-0)/APAR data /parity to tristate delay from
ACLK
ADD add indicator delayed from ACLK
AIND add bus indication output delay from ACLK
A(7-0)/APAR data /parity out tristate to driven delay
from ACLK
Note: All output times are measured with the specified load capacitance.
A/BAC1J1V1
A/BA(7-0)
A/BASPE
A/BACLK
A/BAPAR
A/BAIND
(Output)
A/BADD
(Output)
(Output)
(Input)
(Input)
(Input)
An additional byte time of delay in A/BA(7-0) is provided when control bit ABD is written with a 1. The table
omits A/B parameter prefixes. ASPE edges are at payload boundaries.
Proprietary TranSwitch Corporation Information for use Solely by its Customers.
Figure 9. STS-1 A/B Add Bus Signals, Timing Derived from Add Bus
PWH
Parameter
/t
CYC
t
SU(1)
t
SU(2)
C1
t
H(1)
DATA SHEET
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t
PWH
Symbol
t
t
t
t
t
t
t
t
OD(2)
OD(3)
OD(1)
OD(4)
OD(5)
SU(1)
t
SU(2)
t
CYC
H(1)
H(2)
t
H(2)
t
CYC
Load
75pF
25pF
75pF
t
t
t
t
OD(2)
OD(4)
OD(5)
OD(1)
Min
5.0
5.0
7.0
7.0
7.0
7.0
5.0
40
10
10
Selected
J1
TU/VT
154.32
Typ
50
Add Bus TU/VT Time Slot when enabled
V1
t
OD(3)
Ed. 3, December 2000
Occurs every four frames
Max
7.0
TXC-04252
when provided
60
31
16
24
24
TXC-04252-MB
QE1M
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%