YTD428 Datasheet, PDF (9/14 Pages) YAMAHA CORPORATION – DSU LSI for the ISDN Terminal Equipment

❒ AC Characteristics
s T Reference Point Receive Characteristic (NT mode)
(VDD = 5.0 V, Top = -20 ~ 70 °C, Load Capacity: CL = 50 pF)
Parameter
Transmit Pulse Width
Receive Pulse Width
Rise Time
Fall Time
Phase Diffierence between
Tx and Rx signals
Phase Difference between
Rx signals
Symbol
tTPW
tRPW
tPR
tPF
tTRD
tTRD
tPH
tPH
Condition
Note 1
Note 2
Note 1,
Note 3
Note 2,
Note 3
Min.
5.00
10.0
10.0
Typ.
5.208
5.208
Max.
5.40
260
30
14.0
42.0
4.0
2.0
Units
µs
µs
ns
ns
µs
µs
µs
µs
Note 1 With respect to using the Fixed timing
Note 2 With respect to using the Adaptive timing
Note 3 This value shows the difference between two terminals which are connected with bus system.
HRD
LRD
HTD
LTD
F
L
t RPW
t RPW
t TPW
t TPW
t TRD
t FD
F
Transmit data slot
Receive data slot
L
t PR
t PF
2.0 V
0.8 V
2.0 V
0.8 V
2.4 V
0.4 V
2.4 V
0.4 V
Figure 1 Timing At T Ref. Pt. Interface
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