an8725fh Panasonic Corporation of North America, an8725fh Datasheet - Page 19

• Manufacturer Part Number: an8725fh
• Description: Semiconductor Laser Power Control Ic
• Manufacturer: Panasonic Corporation of North America

ICs for Optical Disk Drive
Note) * 3: Measure at DACMONI pin.
Optical monitor for abnormally emitted light detection (continued)
Signal changeover response
Control operation response
Data writing to LPF-off
Data writing to LPF-on
Data writing to AAF-off
Data writing to AAF-on
Data writing to
DAC6 changeover
Data writing to
DAC5 changeover
Data writing to shunt on
Data writing to shunt off
Control operation response
RPHOLD
PWRMONI changeover
RPHOLD
PWRMONI changeover
RPHOLD
Mask signal width at
RPHOLD
RPHOLD
Mask signal width at
RPHOLD
RPHOLD to
AAFRST signal
AAFRST signal width
Shunt circuit "on"
Shunt circuit "off"
Design reference data (continued)
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Electrical Characteristics at V
5 mode
* 4: Measuring is impossible outside the IC.
* 5: Measuring is impossible outside the IC.
* 6: Measuring is impossible outside the IC. The built-in resistor Rin2 (10 k , allowance: 10%) and the external C2.
The values of t
Parameter
to
to
to mask signal
* 5
to mask signal
* 5
* 5
* 6
* 3
* 3
* 6
46
* 5
, t
* 4
* 4
48
* 5
* 5
and t
212
Symbol
t
t
ERSW1B
ERSW2B
are determined by the built-in resistor Rin1 (10 k , allowance: 10%) and the external C1.
Register setting
t
t
Input
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
207
208
211
212
87
86
89
37
46
48
88
85
90
38
45
47
49
50
CC
Playback
addr "9": D4
Recording
addr "9": D4
XWR
XWR
XWR
XWR
XWR
XWR
XWR
LDERR register "1"
XWR
LDERR register "0"
RPHOLD
at having reached 0.5%
RPHOLD
at having reached 0.5%
RPHOLD
Mask signal
at RPHOLD high
RPHOLD
Mask signal
at RPHOLD low
RPHOLD
AAFRST
XCLR
XCLR
5.0 V, T
output
to LPF "off"
to LPF "on"
to AAF "off"
to AAF "on"
to DAC6 0.5%
to DAC5 0.5%
to shunt circuit "on",
to shunt circuit "off",
to shunt circuit "on"
to shunt circuit "off"
a
to AAFRST
to
to
to mask signal
to mask signal
to AAFRST
recording 0.5%,
Conditions
output
25 C (continued)
playback 0.5%,
to mask signal
to mask signal
"1"
"1"
1,
10, AAF,
5
5
Min
Typ
200
250
250
0.8
0.9
0.9
0.4
0.4
60
20
15
15
15
1
1
2
AN8725FH
Max
400
500
600
200
200
430
230
430
230
2.0
2.5
2.5
0.9
0.9
1.1
1.1
2.2
30
30
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s
s
s
s
s
s
19