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MIC3003GML 数据表(PDF) 69 Page - Micrel Semiconductor |
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MIC3003GML 数据表(HTML) 69 Page - Micrel Semiconductor |
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69 / 75 page  Micrel, Inc. MIC3003 November 2009 69 M9999-111209-C hbwhelp@micrel.com or (408) 955-1690 OEM Configuration 4 (OEMCFG4) D[7] TXF_WRN read/write D[6] TXF_ALM read/write D[5] LAT_WRN read/write D[4] LAT_ALM read/write D[3] ISTART[3] read/write D[2] ISTART[2] read/write D[1] ISTART[1] read/write D[0] ISTART[0] read/write Default value 0000 0000b = 00h Serial address A6h Byte address 25 = 19h This register is non-volatile and will be maintained through power and reset cycles. A valid OEM password is required for access to these registers. Bit(s) Function Operation D[7] TXF_WRN Allows warnings to assert TXFAULT 0: Warnings do not assert TXFAULT 1: Warnings assert TXFAULT The RXPWR low warning flag does not assert TXFAULT D[6] TXF_ALM Allows alarms to assert TXFAULT 0: Alarms do not assert TXFAULT 1: Alarms assert TXFAULT The RXPWR low alarm flag does not assert TXFAULT D[5] LAT_WRN Warning latch 0: Warnings flags are latched. They are cleared by reading the register or toggling TXDISABLE. 1: Warnings flags are not latched., i.e. they are set and reset with the warning condition. The flags are also cleared by reading the register or toggling TXDISABLE. D[4] LAT_ALM Alarm latch 0: Alarms flags are latched. They are cleared by reading the register or toggling TXDISABLE. 1: Alarms flags are not latched., i.e. they are set and reset with alarm condition. The flags are also cleared by reading the register or toggling TXDISABLE. D[3:0] ISTART[3:0] I START current level selection. I START current level selection: 0000 = No I START current 0001 - 1111 = 0.375 mA x I START[[3:0] I START is used to speed up the laser start-up after a fault occurs. The charging current of the compensation capacitor starts from I START instead of ramping up from 0. |
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