mic3003gfltr Micrel Semiconductor, mic3003gfltr Datasheet - Page 54

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

Micrel, Inc.
July 2010
Default value
Serial address
Byte address
This register provides for control of the nominal APC setpoint and management of interrupts by the end-user. APCSEL[1:0]
select which of the APC setpoint registers, APCSET0, APCSET1, or APCSET2 are used as the nominal automatic power
control setpoint. Similarly, MODSEL[1:0] select which of MODSET0, MODSET1, or MODSET2 are used to select the
modulation level of the laser.
IE must be set for any host interrupts to occur via the /INT pin. If IE is set while /INT is asserted, /INT will be de-asserted
immediately.
PORS is always set high by any power-on reset event. If PORM is high, the power-on event will also generate a host interrupt.
PORS will be cleared to zero and the interrupt output de-asserted when USRCTL is read by the host.
If PORM is set following the setting of PORS, PORS will remain set, and /INT will be asserted immediately. /INT will not be de-
asserted until USRCTL is read by the host.
PORM, IE, APCSEL, and MODSEL are non-volatile and will be maintained through power and reset cycles.
Default Value
Serial address
Byte address
read/write
D[3:2]
D[1:0]
read-only
Reserved
reserved
D[7]
D[6]
D[5]
D[4]
D[7]
D[7]
Bit(s)
MODSEL
APCSEL
PORM
PORS
IE
read/write
read-only
reserved
PORM
D[6]
D[6]
Function
Reserved
Power-on interrupt mask
Power-on interrupt flag
Global interrupt enable
Selects APC setpoint register
Selects Modulation setpoint register
read/write
read-only
reserved
PORS
D[5]
D[5]
User Control Register (USRCTL)
0010 0000 b = 20 h
A2 h
254 = FE h
A2 h
255 = FF h
read/write
read-only
reserved
D[4]
D[4]
IE
RESETOUT
Operation
Always write as zero; reads undefined.
1 = POR interrupts mask enabled
0 = POR interrupts mask disabled
1 = POR interrupt occurred
0 = No POR interrupt
1 = Host interrupts are enabled
0 = Host interrupts are disabled
00 = APCSET0
01 = APCSET1
10 = APCSET2
11 = Reserved
00 = MODSET0
01 = MODSET1
10 = MODSET2
11 = Reserved
read/write
read-only
54
reserved
APCSEL
D[3]
D[3]
0000 0000 b = 00 h
RESETOUT
read/write
read/write
APCSEL
D[2]
D[2]
[e-mail]
RESETOUT
read/write
read/write
APCSEL
D[1]
D[1]
RESETOUT
or [phone]
read/write
read/write
M9999-072910-A
MODSEL
MIC3003GFL
D[0]
D[0]