DS1864 Maxim Integrated Products, DS1864 Datasheet - Page 37

• Manufacturer Part Number: DS1864
• Description: SFP Laser Controller and Diagnostic IC
• Manufacturer: Maxim Integrated Products

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Lower Memory Register 73h: Fast-Trip Flags
POWER-ON VALUE:
MEMORY TYPE:
These are the results from the fast-trip comparators. If these flags are latched, they can be cleared by writing the flags to 0.
73h
bit7:5
bit7
bit4
bit3
bit2
bit1
bit0
0
These bits are set to 0.
HBWA flag: Fast-trip flag indicating the High Bias Warning Limit has been exceeded.
0 = Bias measurement is below set limit.
1 = Bias measurement is above set limit.
HBAL flag: Fast-trip flag indicating the High Bias Alarm Limit has been exceeded.
0 = Bias measurement is below set limit.
1 = Bias measurement is above set limit.
LOS flag: Fast-trip flag indicating the Loss of Signal Limit has been exceeded.
0 = LOS measurement is above set limit.
1 = LOS measurement is below set limit.
LTXP flag: Fast-trip flag indicating the Low Transmit Power Limit has been exceeded.
0 = RSSI measurement is above set limit.
1 = RSSI measurement is below set limit.
HTXP flag: Fast-trip flag indicating the High Transmit Power Limit has been exceeded.
0 = RSSI measurement is below set limit.
1 = RSSI measurement is above set limit.
00h
Volatile (SRAM)
0
____________________________________________________________________
0
HBWA flag
SFP Laser Controller and
HBAL flag
LOS flag
Diagnostic IC
LTXP flag
HTXP flag
bit0
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