參數(shù)資料
型號(hào)： AK2573AVB
廠(chǎng)商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 125M / 156M Laser Diode Driver + APC
中文描述： 1.25億/ 1.56 apc的激光二極管驅(qū)動(dòng)器
文件頁(yè)數(shù)： 33/38頁(yè)
文件大?。?/td> 286K
代理商： AK2573AVB
ASAHI KASEI [AK2573A]
<MS0189-E-01>
-33-
2004/5
8.4 Register
Register memory map is shown in Table 8-6 and 8-7. Register access is limited with WP pin and Operation mode
(refer toFig 9-1, for more information).
Table 8-6 Register (Device Address = A8h)
Register
R_VRFTRIM[7:4]
R_TEMP_OFFSET[3:0]
R_APC_FF_SET[7:6]
R_APC_FB_SET[5:4]
R_APC_INIT_SET[3]
Address
00h
00h
01h
01h
01h
Function
Oscillator Frequency
Temperature sensor offset
APC FF Setting
APC FB Setting
APC FB Initial Setting
Bit Type R/W
4
U
4
U
2
U
2
U
1
U
Remark
see Table 4-4
see Table 4-4
0: Noinitial Setting
1: Initial Setting
0: NoSFP Support
1: SFP Support
0: Gain = 1/2
1: Gain = 1
0: Gain = 1/2
1: Gain = 1
0: OFF
1: ON
0: 160ms
1: 2ms
0: “H”
1: “L”
00: 1/3, 01: 1/4
10: 1/6, 11: 1/7
see section 6.2
R/W
R/W
R/W
R/W
R/W
R_SFP[2]
01h
MSA(SFP) Setting
1
U
R/W
R_DAC1_GAIN[1]
01h
I-DAC1 Gain
1
U
R/W
R_DAC2_GAIN[0]
01h
I-DAC2 Gain
1
U
R/W
R_TEMP_DET[5]
02h
Temperature compensation
at shutdown release ON/OFF
Delay time of TXFAULT
detection with OPTALM
ALM Polarity
1
U
R/W
R_TIMER_OPTALM[4]
02h
1
U
R/W
R_ALM_POL[3]
02h
1
U
R/W
R_OPTALM[1:0]
02h
OPTALM Reference Level
2
U
R/W
R_TEMP_WIN[6:0]
03h
Temperature Difference
Detection Level
APC FB Ratio for I-DAC1
DATAALM Mask
7
U
R/W
R_DAC1_FBRT[6:0]
R_DATAALM_MASK[0]
05h
06h
7
1
U
U
R/W
R/W
see section 4.3
0: DATAALM Valid
1: DATAALM Invalid
see section 4.3
see Table 4-2
see Table 4-9
R/(W) see Table 4-9
R/(W) see section 6.2
R_DAC2_FBRT[6:0]
R_PDGAIN[5:0]
R_TEMPALM[6:0]
R_TEMP[6:0]
R_TEMP_STDW[6:0]
07h
08h
09h
0Ah
0Bh
APC FB Ratio for I-DAC2
PDGAIN
TEMPALM Level
Detected Temperature
Temperature at Shutdown
request
I-DAC1 FF
I-DAC2 FF
APC FB
I-DAC1 FB
I-DAC2 FB
I-DAC1
I-DAC2
APC Reference
CURRALM for I-DAC1
CURRALM for I-DAC2
Duty Adjust
Test for AKM
7
6
7
7
7
U
U
U
U
U
R/W
R/W
R/W
R_DAC1_FF[7:0]
R_DAC2_FF[7:0]
R_APC_FB[8:0]
R_DAC1_FB[8:0]
R_DAC2_FB[8:0]
R_DAC1[7:0]
R_DAC2[7:0]
R_APC_TRGT[4:0]
R_CURRALM_DAC1[7:4]
R_CURRALM_DAC2[3:0]
R_DUTY[4:0]
AKM Test
0Ch
0Dh
0Eh
11h
12h
13h
14h
15h
16h
16h
17h
18h-
1Dh
8
8
9
9
9
8
8
5
4
4
5
-
U
U
S
S
S
U
U
U
U
U
U
-
R/W
R/W
R/(W) Note 1
R/(W) Note 1
R/(W) Note 1
R/(W) Note 2
R/(W) Note 3
R/W
R/W
R/W
R/W
-
Note 2
Note 3
see Table 4-3
see section 5.2
see section 5.2
Note 1: The data format of read /write via I
2
C
TM
(8bit) is shown in Fig 8-1.
Note 2: R_DAC1 = R_DAC1_FF + R_DAC1_FB, R_DAC1>=0,
Note 3: R_DAC2 = R_DAC2_FF + R_DAC2_FB, R_DAC2 >= 0
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