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| 型號： | AK2572 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | APC for Burst Mode Applicable Direct Modulation Laser Diode |
| 中文描述： | apc的突發(fā)模式適用的直接調(diào)制激光器 |
| 文件頁數(shù)： | 28/50頁 |
| 文件大?。?/td> | 463K |
| 代理商： | AK2572 |
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ASAHI KASEI
[AK2572]
-28-
< MS0290-E-01>
2004/8
6. 5
TXFAULT
6.5.1 Target Alarm Setting of TXFAULT Output
As shown in Table 6-2, target Alarms (ALMs) available on TXFAULT output can be selected by EEPROM /
Register setting. Logical “OR” function of the selected ALMs becomes TXFAULT output signal.
Table 6-2 Target ALM Setting of TXFAULT Output
Device Address / Address
EEPROM
Target ALM
Mask setting [*1]
Register
Status register
(A8h / 19h) [*2]
R_TXFLT_ST [3]
R_TXFLT_ST [2]
R_TXFLT_ST [1]
R_TXFLT_ST [0]
R_TXFLT_ST [4]
Note
EXTALM2
EXTALM1
CURRALM
OPTALM
TEMPALM
［
*1
］
Logical “OR” function of those ALMs, where corresponding bits are set by “1” in mask setting by
EEPROM / Register, becomes TXFAULT output signal.
［
*2
］
When ALM is detected, “1” is written in the corresponding bit of the ALM.status register.
［
*3
］
When RE_PWR_LVL1_SET
＝
”0” or RE_SFP_SET
＝
”0”, EXTALM2 / MOD_CTRL-pin is set as
EXTALM2 input pin and EXTALM2 function is enabled.
RE_EXTALM2_SET
［
5
］
RE_EXTALM1_SET
［
4
］
RE_CURRALM _SET
［
3
］
RE_OPTALM _SET
［
2
］
RE_TEMPALM_SET
［
7
］
[*3]
A6h / 65h
A8h / 05h
A6h / 66h
A8h / 06h
6.5.2
Operation at TXFAULT Detection
Operation at TXFAULT detection differs by RE_SFP_SET setting. Operation at different settings is listed in
Table 6-3.
When at RE_SFP_SET
＝
”0”, any of the ALMs being set by EEPROM / Register is detected, TXFAULT signal
is generated and “H” output is held and DAC output is put into shutdown condition. But when a shutdown
request is made via TXDIS-pin, a previous TXFAULT output level before the shutdown request is kept and
even if any ALM is detected during the shutdown, TXFAULT signal is not output. When the shutdown
request is released (transition of “L” to “H”) via TXDIS-pin, release of TXFAULT (TXFAULT output is “L”) is
made. For more details, please refer to section “7. Shutdown Control“. DAC output is not shutdown during the
Adjustment Mode even if TXFAULT is detected.
When at RE_SFP_SET
＝
”1”, any of the ALMs being set by EEPROM / Register is detected, TXFAULT signal
is generated (TXFAULT output is “H”), when all selected ALMs are cleared, TXFAULT is also cleared
(TXFAULT output is “L”).
When the shutdown condition is set, CURRALM is forced to “Disabled output“ state.
Table 6-3 TXFAULT Operation
RE_SFP_SET
Shutdown
request via
TXDIS-pin
Logical “OR” of
target ALM for
TXFAULT
0
1
TXFAULT
Operation
0
Normal operation
Shutdown
0
1 (Hold)
0
1
x
Hold the previous TXFAULT level
just before shutdown request
Logical “OR” of target ALMs for
TXFAULT
Logical “OR” of target ALMs for
TXFAULT
Shutdown
0
x
Normal operation
1
1
x
Shutdown
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK2573A | 125M / 156M Laser Diode Driver + APC |
| AK2573AVB | 125M / 156M Laser Diode Driver + APC |
| AK2574 | 156M Laser Diode Driver + APC for Burst Mode |
| AK2574VB | 156M Laser Diode Driver + APC for Burst Mode |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AK2573A | 制造商:AKM 制造商全稱:AKM 功能描述:125M / 156M Laser Diode Driver + APC |
| AK2573AVB | 制造商:AKM 制造商全稱:AKM 功能描述:125M / 156M Laser Diode Driver + APC |
| AK2574 | 制造商:AKM 制造商全稱:AKM 功能描述:156M Laser Diode Driver + APC for Burst Mode |
| AK2574VB | 制造商:AKM 制造商全稱:AKM 功能描述:156M Laser Diode Driver + APC for Burst Mode |
| AK2581HB-AT | 制造商:ADDA Corporation 功能描述:AC-FAN, 254X89 MM, 115/60 VOLT 制造商:ADDA Corporation 功能描述:AXIAL FAN 254MM 115VAC 620mA 制造商:ADDA Corporation 功能描述:AXIAL FAN, 254MM, 115VAC, 620mA 制造商:ADDA Corporation 功能描述:AK Series 2100/2000 RPM 254 x 89 mm 115 V 680/630 CFM Ball Bearing AC Fan 制造商:ADDA Corporation 功能描述:AXIAL FAN, 254MM, 115VAC, 620mA; Frame Dimensions:254mm x 89mm; Supply Voltage:115VAC; Current Rating:620mA; Flow Rate - Imperial:630cu.ft/min; Flow Rate - Metric:19.244m /min; Noise Rating:62dBA; Bearing Type:Ball; Series:AK25489 ;RoHS Compliant: Yes 制造商:ADDA 功能描述:AK Series 2100/2000 RPM 254 x 89 mm 115 V 680/630 CFM Ball Bearing AC Fan |
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