mic3003gfltr Micrel Semiconductor, mic3003gfltr Datasheet - Page 53

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

Micrel, Inc.
July 2010
Default value of both bytes when the
MIC3003 is shipped from the factory
Serial address
Bytes addresses
The lower seven bits of POHh contain the most significant bits of the 15-bit power-on hours measurement. The value in POHh
should be combined with the eight-bit power-on hours low byte, POHl, to yield the complete result.
The most significant bit of POHh, POHFLT, is an error flag. If POHFLT is set, the power-on hour meter data has been
corrupted and should be ignored.
It is recommended that a two-byte sequential (block) SMBus read operation be performed on POHh and POHl to insure
coherency between the two registers.
This register is non-volatile and will be maintained through power and reset cycles, including unanticipated power failures.
POHh Bit(s)
D[7]
D[6:0]
Default value
Serial address
Byte address
When the A/D conversion for a given parameter is completed and the results available to the host, the appropriate data ready
flag will be set. The flag will be cleared when the host reads the corresponding result register.
read/write
read/write
D[2:0]
D[7]
D[6]
D[5]
D[4]
D[3]
TRDY
D[7]
D[7]
Bit(s)
RXRDY
TXRDY
TRDY
VRDY
IRDY
read/write
read/write
Function
Power-on hours fault flag, POHFLT
Power-on hours, most significant seven bits
VRDY
D[6]
D[6]
Temperature data ready flag
Voltage data ready flag
Bias current data ready flag
Transmit power data ready flag
Receive power data ready flag
Reserved
Function
read/write
read/write
IRDY
D[5]
D[5]
0000 0000 b = 00 h
A6 h
MS byte (POHh): 251 = FB h
LS byte (POHl): 252 = FC h
Power-On Hours (POHh and POHl)
Data Ready Flags (DATARDY)
0000 0000 b = 00 h
A6 h
253 = FD h
read/write
read/write
TXRDY
D[4]
D[4]
Operation
0 = Result register contains old data; 1 = new data ready
0 = Result register contains old data; 1 = new data ready
0 = Result register contains old data; 1 = new data ready
0 = Result register contains old data; 1 = new data ready
0 = Result register contains old data; 1 = new data ready
Reserved
Operation
1 = fault: the power-on hours value is corrupted and cannot
be relied upon
0 = no fault: the power-on hours value is correct
read/write
read/write
53
RXDY
D[3]
D[3]
read/write
reserved
D[2]
D[2]
[e-mail]
read/write
reserved
D[1]
D[1]
or [phone]
read/write
M9999-072910-A
reserved
MIC3003GFL
D[0]
D[0]