ak2574 AKM Semiconductor, Inc., ak2574 Datasheet - Page 25

• Manufacturer Part Number: ak2574
• Description: 156m Laser Diode Driver Apc For Burst Mode
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Table 5-3 EEPROM Address MAP
Table 5-4 Adjustment Data Area (Device Address = A6h)
Table 5-5 EEPROM Map (Adjustment Data Area)
<MS0266-E-00>
6Eh-FFh
63h-6Ch
Address
E_VREFTRIM[7:4]
E_TEMP_OFFSET
[3:0]
E_TXDIS_POL[2]
E_TX ACT_POL[1]
E_CLKALM_POL[0] 61h
E_DAC_TXA CT
E_AKM_SET[1:0]
Address
6Dh
60h
61h
62h
Device
A0h
A0h
A2h
A4h
A4h
A6h
A6h
A6h
EEPROM(
00h (0) '
7Fh (127)
80h (128) '
FFh (255)
00h (0) '
FFh (255)
00 h(0) '
7F h(127)
80h (128) '
FFh (255)
00h (0) '
1Fh(31)
20h (32) '
5Fh (95)
60h (96) '
7Fh (255)
D7
Address
60h
60h
61h
61h
62h
6Dh
Address
D6
VREFTRIM
DATA (D7-D0)
User Area
(1kbit)
No Memory
E_DAC1_TC
Temperature data for I-DAC1 (1kbit)
E_DAC2_TC
Temperature data for I-DAC2 (1kbit)
E_DUTY_TC (256bit)
Temperature data for Duty Adjustment
Reserved
Adjustment data
(256bit)
Oscillator Frequency
Temperature sensor offset
TXDIS Polarity
TXA CT Polarity
CLKALM Polarity
TXA CT Reference Voltage
AKM)*+,-
D5
Function
D4
Reserved
-25-
D3
Bit
4
4
1
1
1
3
2
Initial
Value
00h
00h
00h
00h
00h
see Table 5-4 and 5-5
Factory
Setting
0
0
0
000
00
TXDIS_
Value
Initial
POL
TEMP_OFFSET
D2
Remark
Addressing with R_TEMP
(1.5& step)
Addressing with R_TEMP
(1.5& step)
Addressing with MSB 5bit of
R_TEMP (6& step)
0: Shutdown at “H”
1: Shutdown at “ L”
0: “ H” at TXACT detection
1: “ L” at TXACT detection
0: “ H” at CLKALM detection
1: “ L” at CLKALM detection
see Table 3-2
DAC_TXACT
TXACT_
POL
D1
AKM_SET
Remark
CLKALM_
[AK2574]
2003/12
POL
D0