MIC3003GFL datasheet(68/74 Pages) MICREL

68 / 74 page

Micrel, Inc.

MIC3003GFL

July 2010

M9999-072910-A

hbwhelp@micrel.com or (408) 955-1690

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

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]

START current level selection.

START current level selection:

0000 = No I

START current

0001 - 1111 = 0.375 mA x I

START[[3:0]

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.

OEM Configuration 5 (OEMCFG5)

D[7]

read/write

D[6]

read/write

D[5]

read/write

D[4]

read/write

D[3]

read/write

D[2]

read/write

D[1]

read/write

D[0]

read/write

Default value

0000 0000b = 00h

Serial address

A6h

Byte address

26 = 1Ah

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.

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