ASAHI KASEI
[AK2572]
Table 4-7 Relation of APC Operation Setting and Register Retaining Temperature Compensation Data
E_BIAS_TC [*1]
(Temperature compensation
Data for I-DAC2)
E_MOD_TC [*1][*2]
(Temperature compensation
Data for I-DAC1or V-DAC3)
RE_APC_ RE_APC_ RE_APC_
FF_SET
FB_SET
INIT_SET
－
－
00 (0)
x
0
1
0
1
0
1
x
0
1
0
1
0
1
x
0
1
0
1
0
1
x
－
－
01 (1)
－
R_APC_FBIV
－
00 (0)
－
10 (2)
－
－
R_APC_FBIV
－
11 (3)
00 (0)
01 (1)
－
R_APC_FBIV
－
－
R_MOD_FF
R_MOD_FF
Prohibited
01 (1)
－
R_MOD_FF
R_MOD_FF
R_MOD_FF
R_MOD_FF
－
10 (2)
R_APC_FBIV
－
11 (3)
00 (0)
01 (1)
R_APC_FBIV
R_BIAS_FF
R_BIAS_FF
R_BIAS_FF
R_BIAS_FF
－
R_APC_FBIV
－
10 (2)
11 (3)
10 (2)
Prohibited
Prohibited
－
R_BIAS_FF
11 (3)
xx
R_BIAS_FF
R_MOD_FF
［*1］ As to the EEPROM memory space of E_BIAS_TC, E_MOD_TC, refer to Table 9-3.
［*2］ By RE_MODV_SEL setting, DAC (either I-DAC1 or V-DAC3) loading the temperature
compensation data retained in E_MOD_TC is selected. Refer to Table 3-4.
［*3］ Register content
Register
Content
Note
R_BIAS_FF
R_MOD_FF
Bias current data (APC_FF)
Modulation current data (APC_FF)
Set to I-DAC2
Set to either I-DAC1 or V-DAC3.
Added to the APC_FF value after
dividing calculation.
R_APC_FBIV
APC_FB initial data.
-20-
<MS0290-E-01>
2004/8
AKM [ ASAHI KASEI MICROSYSTEMS ]
