mic3003gfltr Micrel Semiconductor, mic3003gfltr Datasheet - Page 70

• Manufacturer Part Number: mic3003gfltr
• Description: Fom Management Ic With Internal Calibration
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
July 2010
Bit(s)
D[7]
D[6:5]
D[4]
D[3]
D[2]
D[1]
D[0]
Default values for all bytes when the MIC3003
is shipped
Serial address
Byte addresses
These registers are used for backing up the POH result during power cycles. At power-up, the POH meter selects the larger of
the two values as the initial count. Incremental results are stored in alternate register pairs. The power-on hour meter may be
reset or preset by writing to these registers.
These registers are not typically intended to be used by the OEM or end user. The current value of the power-on hours meter
may be read from the POHh and POHl registers.
If it is necessary to preset the power-on hours meter to a specific value, please consult the factory for the exact format to be
written to the POHDATA registers.
These registers are non-volatile and will be maintained through power and reset cycles. A valid OEM password is required for
access to these registers.
read/write
D[7]
Function
A0h space access control
RXPWR Linearization Intervals
/ disable
RXLOS/TRSOUT Select
TXDISABLE debounce enable
RXLOS Polarity
Temperature resolution
TXFAULT clear mode
read/write
D[6]
read/write
D[5]
Power-On Hour Meter Data (POHDATA)
0000 0000 b = 00 h
A6 h
32 – 34 and 36 - 38 = 20 h - 22 h and 24 h - 26 h
Operation
0: A0h space is used according to SFF-8472
1: A0h space does not respond to any access request. SMBus transactions to
A0h receive a NACK response.
00: Temperature-based coefficient selection
01: Programmable delimiters
10: Hard coded delimiters
11: Reserved
Options 01 and 10 partition the receive power result range into eight regions,
each of which has its own slope and offset coefficients. The delimiters identify
the region boundaries within the 12-bit receive power range of results, and
may be either hard-coded (10) or programmable (01).
Use of hard-coded delimiters frees up extra A6 memory space for scratchpad
use.
0: TXDISABLE is not debounced
1: TXDISABLE is debounced. Glitches less than 5 ms are rejected.
Set this bit to 1 if a mechanical switch is used for TXDISABLE. Set to 0 for
normal operation to assure compliance to the SFP MSA.
0: The RXLOS output is low for normal operation and high with a loss of signal
condition.
1: The RXLOS output is high for normal operation (signal detected) and low
with a loss of signal (no signal detected) condition.
1: TRRSOUT is selected for output
0: Temperature is measured to a resolution of 1 ºC (eight-bit resolution)
1: Temperature is measured to a resolution of 0.5 ºC (nine-bit resolution)
0: TXFAULT remains set until TXDISABLE is toggled
1: TXFAULT is in continuous mode and follows the state of the faults
In continuous mode, the fault conditions asserting TXFAULT are not registered
and turn on and off According to the MIC3003’s operation.
0: RXLOS is selected for output
read/write
D[4]
read/write
70
D[3]
read/write
D[2]
[e-mail]
read/write
D[1]
or [phone]
M9999-072910-A
read/write
MIC3003GFL
D[0]