AK2572 Datasheet, PDF (22/50 Pages) Asahi Kasei Microsystems – APC for Burst Mode Applicable Direct Modulation Laser Diode

ASAHI KASEI
[AK2572]
Table 4-9 Operation Setting and APC Operation at Adjustment Mode
RE_APC
_FB_SET
RE_APC
_FF_SET
RE_APC_
INIT_SET
R_ BIAS _FF R_MOD_FF R_APC_FB
00 (0)
xx
x
01 (1)
xx
x
10 (2)
xx
x
I/F
I/F
0
I/F
I/F
FB
I/F
I/F
FB
0
00 (0)
1
0 [*2]
0 [*2]
FB
0 [*2]
0 [*2]
FB
R_APC
_FBIV
0 [*2]
I/F
I/F
0 [*2]
I/F
R_BIAS_
FBRT
I/F [*1]
I/F [*1]
I/F [*1]
I/F
I/F
0
01 (1)
1
11 (3)
0
10 (2)
1
0 [*2]
I/F
FB
0 [*2]
I/F
0 [*2]
I/F
FB
I/F
I/F
I/F
0 [*2]
FB
0 [*2]
I/F
I/F
0 [*2]
FB
I/F
I/F
0
11 (3)
1
I/F
I/F
FB
0 [*2]
I/F
I/F
I/F
FB
I/F
I/F
“I/F” notation in the table indicates that the register setting can be executed via Digital I/F.
R MOD _
FBRT
I/F [*1]
I/F [*1]
I/F [*1]
I/F
I/F
I/F
I/F
I/F
I/F
I/F
I/F
K_ BIAS
_FBRT
0
0
1
R_BIAS_FBRT
/128
R_BIAS_FBRT
/128
R_BIAS_FBRT
/128
R_BIAS_FBRT
/128
R_BIAS_FBRT
/128
R_BIAS_FBRT
/128
R_BIAS_FBRT
/128
R_BIAS_FBRT
/128
K_ MOD
_FBRT
0
1
0
R_MOD_FBRT
/128
R_MOD_FBRT
/128
R_MOD_FBRT
/128
R_MOD_FBRT
/128
R_MOD_FBRT
/128
R_MOD_FBRT
/128
R_MOD_FBRT
/128
R_MOD_FBRT
/128
BIAS
(R_ DAC2)
MOD
(R_ DAC1
or R_DAC3)
FF
FF
FF
FB
FB
FF
FB
FB
FB
FB
FB
FF + FB
FB
FF + FB
FF + FB
FB
FF + FB
FB
FF + FB FF + FB
FF + FB FF + FB
[*1] Setting changes of R_BIAS_FBRT and R_MOD_FBRT are possible via Digital I/F, but APC_FB dividing coefficients K_BIAS_FBRT and K_MOD_FBRT are
not affected.
[*2] Register setting is possible but data is treated as “0”.
-22-
< MS0290-E-01>
2004/8