AK2571 Datasheet, PDF(32/52 Page) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

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AK2571 Datasheet, PDF (32/52 Pages) Asahi Kasei Microsystems – Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes

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AKM Confidential

AK2571

Table 6-5 Data and address construction for each wavelength

Address

Data

A3-A0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

0000

E_ATC_OFFSET[5:0]

E_PDMON_SET[2:0]

E_PDGAIN[4:0]

0001

E_MON_DAC_FIX[7:0]

0010

E_EA_

E_DACi_GAIN

FREQ

GAIN SW

DAC3

DAC2

DAC1

0011

E_APC_FB_MAX[7:0]

0100

E_DAC2_FIX[7:0]

E_APC_TRGTï¼»6:0ï¼½

E_DAC1_FIX[7:0]

0101

0110

E_ATC_FB_SET[3:0]

0111

E_TMPRTALM_WIN[7:0]

E_DAC3_FIX[7:0]

E_ATC_FB_MAX[7:0]

E_ATC_TRGT[7:0]

1000

E_WLALM_SET[7:0]

E_CUALM_SET[7:0]

1001

Reserved

(2) Common setting data

Table 7-6 and 7-7 show common data settings in the EEPROM. Registers marked â1â indicate the existence of a related

Table 7-6 Common setting data construction

Name

E_TEC_ANALOG

E_PID_PWM

E_PID_CTRL

E_DAC_SET

Bits Function

Reg

1 TEC Analog way 1

select

2 PWM division set 1

1 Analog / PWM set 1

3 I-DAC set

E_APC_FF_SET

E_APC_FB_SET

1 APC Feed forward 1

set

3 APC Feedback data 1

add I-DAC selection

E_APC_CNT_SET 2

APC Count-up 1

finalize I-DAC select

E_TV_OFFSET

5 Internal T_V conv. 1

Address

A7,A6 A5, A4 A3-A0

00 11

1010

1011

1100

Setting

0: Analog-1way

1: Analog-2way

00: Not divide

01: 32, 10:64, 11:128

0: Analog control

1: PWM control

0: Disable

1: Enable

[0]: I-DAC1

[1]: I-DAC2

[2]: I-DAC3

0: fixed current

1: compensation

0: not addition

1: addition

[0]: I-DAC1

[1]: I-DAC2

[2]: I-DAC3

00: I-DAC1

01: I-DAC2

10: I-DAC3

11: Disable

Refer Table 3-10

<Rev. 0.6E Preliminary>

-32-

2001/11

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