txc-03453b TranSwitch Corporation, txc-03453b Datasheet - Page 37

• Manufacturer Part Number: txc-03453b
• Description: Tl3m Device Triple Level Mapper
• Manufacturer: TranSwitch Corporation

DCLK clock period
DCLK duty cycle, t
DD(7-0) data/DPAR/DC1J1/DC1/DSPE
setup time before DCLK
DD(7-0) data/DPAR/DC1J1/DC1/DSPE
hold time after DCLK
(INPUTS)
(INPUT)
(INPUT)
(INPUT)
DD(7-0)
DC1J1
DSPE
DCLK
DPAR
Note:
Proprietary TranSwitch Corporation Information for use Solely by its Customers
Parameter
t
SU
PWH
The relationship between J1 and the SPE signals is shown for illustration purposes
only, and will be a function of the pointer offset. For the STM-1 format, there will be
one J1 pulse which indicates the start of the VC-4 that carries the three TUG-3s.
The C1 pulse is shown dotted because the C1 pulse may be provided on the DC1
signal lead. If the DC1 signal lead is not used, it must be grounded.
C1(1)
C1(1)
/t
CYC
t
H
C1(2)
Figure 12. STM-1 Drop Bus Interface Timing
t
C1(3)
t
SU
PWH
t
H
t
Symbol
CYC
DATA SHEET
t
CYC
t
SU
t
--
H
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Min
4.0
4.0
40
J1
J1
51.44
FIXED
STUFF
Typ
50
PRELIMINARY TXC-03453B-MB, Ed. 3
FIXED
STUFF
Max
TUG-3
H1(1)
60
TXC-03453B
September 2003
TUG-3
H1(2)
Unit
TL3M
ns
ns
ns
%