MIC3002_10 Datasheet, PDF (56/65 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
MIC3002
Fault Mask (FLTMSK)
D[7]
OEMIM
read/write
D[6]
POHE
read/write
D[5]
reserved
D[4]
reserved
D[3]
SATMSK
read/write
D[2]
TXMSK
read/write
D[1]
IAMSK
read/write
D[0]
DFMSK
read/write
Default Value
0000 0000b = 00h
Serial Address
A6h
Byte Address
11 = 0Bh
A valid OEM password is required for access to this register. This register is non-volatile and will be maintained through power
and reset cycles.
D[7]
D[6]
D[5:4]
D[3]
D[2]
D[1]
D[0]
Bit
OEMIM
POHE
D[5:4]
SATMSK
TXMSK
IAMSK
DFMSK
Function
OEM interrupt mask bit
OEM Power-on Hour Meter enable bit
Reserved
APC saturation fault mask bit
High TX optical power fault mask bit
Bias current high alarm mask bit
Diode fault mask bit
Operation
1 = masked; 0 = enabled; Read/write; non-volatile.
1 = enabled; 0 = disabled; Read/write; non-volatile.
Always write as zero; reads undefined.
1 = masked; 0 = enabled; Read/write; non-volatile.
1 = masked; 0 = enabled; Read/write; non-volatile.
1 = masked; 0 = enabled; Read/write; non-volatile.
1 = masked; 0 = enabled; Read/write; non-volatile.
OEM Password Setting (OEMPWSET)
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
12 - 15 = 0Ch - 0Fh; 0Ch = MSB
This four-byte field is the password required for access to the OEM area of the MIC3002’s memory and registers. The byte at
address 12 (0Ch) is the most significant byte. This field is compared to the four-byte OEMPW field at serial address A2h, byte
120 to 123 if OMCFG6-2 = 0, or byte 123 to 126 if OEMCFG6-2 = 1. If the two fields match, access is allowed to the OEM
areas of the MIC3002 non-volatile memory at serial addresses A4h and A6h. The OEM password may be set by writing the
new value into OEMPWSET. The new password will not take effect until after a power-on reset occurs or a warm reset is
performed using the RST bit in OEMCFG0. This allows the new password to be verified before it takes effect. These registers
are non-volatile and will be maintained through power and reset cycles. A valid OEM password is required for access to this
register.
Byte
3
2
1
0
Weight
OEM Password, Most Significant Byte
OEM Password, 2nd Most Significant Byte
OEM Password, 2nd Least Significant Byte
OEM Password, Least Significant Byte
July 2007
56
M9999-073107-B
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