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| AN8725FH Datasheet, PDF (29/36 Pages) Panasonic Semiconductor – Semiconductor laser power control IC | |||
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ICs for Optical Disk Drive
s Application Notes (continued)
2. Timing chart
1) Definition of rising and falling
tHL
90%
10%
2) Interface
AD0
to AD3
DT0
to DT7
XWR
XRD
In write
t2
t6
Write address
t3
t7
Write data
t4
AN8725FH
tLH
90%
10%
In read
t9
t13
Read address
t10
t14
Read data
t11
Parameter
Switching characteristics
Pulse width
Setup time
Hold time
Symbol
Conditions
tLH 10% to 90%
tHL 90% to 10%
t4 XWR â to XWR â
t11 XRD â to XRD â
t2 AD defined to XWR â
t3 DT defined to XWR â
t9 AD defined to XRD â
t10 XRD â to DT defined
t6 XWR â to AD released
t7 XWR â to DT released
t13 XRD â to AD released
t14 XRD â to DT released
Min Typ Max Unit
  10 ns
  10
50   ns
70  
10   ns
35  
10  
  50
0   ns
0 
0 
0  30
29
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