MIC3001 Datasheet, PDF (62/74 Pages) Micrel Semiconductor – SFP Management IC with Internal Calibration

MIC3001
Micrel
BIAS DAC Setting (APCDAC)
Current VBIAS setting
D[7]
read only
D[6]
read only
D[5]
read only
D[4]
read only
D[3]
read only
D[2]
read only
D[1]
read only
D[0]
read only
Default Value
0000 0000_b = 00_h
Serial Address
A6_h = 1010011_b
Byte Address
20 = 14_h
This register reflects (reads back) the value set in the APC register (APCSET0, APCSET1, or APCSET2 whichever is
selected). A valid OEM password is required for access to this register.
Modulation DAC Setting (MODDAC)
Current VMOD setting
D[7]
read only
D[6]
read only
D[5]
read only
D[4]
read only
D[3]
read only
D[2]
read only
D[1]
read only
D[0]
read only
Default Value
0000 0000_b = 00_h
Serial Address
A6_h = 1010011_b
Byte Address
21 = 15_h
This register reflects (reads back) the value set in the MODSET register. A valid OEM password is required for access
to this register.
OEM Readback Register (OEMRD)
D[7]
reserved
D[6]
reserved
D[5]
reserved
D[4]
INT
read only
D[3]
APCSAT
read only
D[2]
IBFLT
read only
D[1]
TXFLT
read only
D[0]
RSOUT
read only
Default Value
0000 0000_b = 00_h
Serial Address
A6_h = 1010011_b
Byte Address
22 = 16_h
This register reflects (reads back) the status of the bits corresponding to the parameters defined below. A valid OEM
password is required for access to this register. Otherwise, reads are undefined and writes are ignored.
Bit
D[7:5]
D[4]
INT
D[3]
APCSAT
D[2]
IBFLT
D[1]
TXFLT
D[0]
RSOUT
Function
Reserved
Mirrors state of /INT but active-high; not state of
physical pin!
APC saturation fault comparator output state
State of IBIAS over-current fault comparator
output
State of transmit power fault comparator output
State of the rate select output pin, RSOUT
Operation
Always write as zero; reads undefined.
1 = interrupt; 0 = no interrupt.
1 = fault; 0 = normal operation.
1 = fault; 0 = normal operation; read-only.
1 = fault; 0 = normal operation; read-only.
1 = high; 0 = low; Read-only..
M9999-082404
62
August 2004