mic3002 Micrel Semiconductor, mic3002 Datasheet - Page 52

• Manufacturer Part Number: mic3002
• Description: Mic3002 Fom Management Ic With Internal Calibration
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
July 2007
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.
IE must be set for any interrupts to occur. If PORM is set, the power-on event will generate an interrupt and warm resets using
RST will not generate a POR interrupt. When a power-on interrupt occurs, assuming PORM=1, PORS will be set. PORS will be
cleared and the interrupt output de-asserted when USRCTL is read by the host. If IE is set while /INT is asserted, /INT will be
de-asserted. The host must still clear the various status flags by reading them. If PORM is set following the setting of PORS,
PORS will remain set, and /INT will not be de-asserted, until USRCTL is read by the host.
PORM, IE, and APCSEL are non-volatile and will be maintained through power and reset cycles. A valid USER password is
required for access to this register.
Default Value
Serial Address
Byte Address
A write to OEMCFG0 will result in any A/D conversion in progress being aborted and the result discarded. The A/D will begin a
new conversion sequence once the write operation is complete. All bits in OEMCFG0 are non-volatile except DFLT and RST. A
valid OEM password is required for access to this register.
read/write
write only
D[3:2]
D[1:0]
D[7]
D[6]
D[5]
D[4]
D[7]
D[6]
D[5]
D[4]
D[7]
D[7]
RST
Bit(s)
Bit
MODSEL
APCSEL
PORM
PORS
ZONE
DFLT
RST
OE
IE
read/write
read/write
PORM
ZONE
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
Selects temperature zone.
Diode fault flag.
Output enable for SHDN, V MOD ,
Function
read/write
read only
PORS
DFLT
D[5]
D[5]
OEM Configuration Register 0 (OEMCFG0)
USER Control Register (USRCTL)
0010 0000 b = 20 h
A2 h
255 = FF h if OMCFG6 bit 2 = 0
222 = DE h if OMCFG6 bit 2 = 1
0000 0000 b = 00 h
A6 h
00 = 00 h
read/write
reserved
D[4]
D[4]
OE
IE
Operation
Always write as zero; reads undefined.
1 = POR interrupts enabled; 0 = disabled; read/write;
non-volatile.
1 = POR interrupt occurred; 0 = no POR interrupt;
read-only.
1 = enabled; 0 = disabled; read/write; non-volatile.
00 = APCSET0, 01 = APCSET1, 10 = APCSET2;
11 = reserved; read/write; non-volatile.
00 = MODSET0, 01 = MODSET1, 10 = MODSET2, 11 =
reserved; read/write; non volatile.
Operation
0 = no action; 1 = reset; write-only.
0 = internal; 1 = external; non-volatile.
1 = diode fault; 0 = OK.
1 = enabled; 0 = hi-Z; non-volatile.
APCSEL[1]
read/write
MODREF
52
reserved
D[3]
D[3]
APCSEL[0]
read/write
read/write
VAUX[2]
D[2]
D[2]
[e-mail]
MODSEL[1]
read/write
read/write
VAUX[1]
D[1]
D[1]
MODSEL[0]
or [phone]
read/write
read/write
M9999-073107-B
VAUX[0]
D[0]
D[0]
MIC3002