MAX11312 Datasheet, PDF (36/54 Pages) Maxim Integrated Products – PIXI, 12-Port Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO

MAX11312
PIXI, 12-Port Programmable Mixed-Signal I/O with
12-Bit ADC, 12-Bit DAC, Analog Switches, and GPIO
Interrupt Register (Read) (continued)
BIT
8:6
11:9
14:12
FIELD NAME
TMPINT[2:0]
TMPEXT1[2:0]
TMPEXT2[2:0]
DESCRIPTION
Internal temperature interrupts
• TMPINT[2]: Asserted when the internal temperature value is larger than the value stored in
TMPINTHI[11:0]. Cleared after the interrupt register is read.
• TMPINT[1]: Asserted when the internal temperature value is lower than the value stored in
TMPINTLO[11:0]. Cleared after the interrupt register is read.
• TMPINT[0]: Asserted when a new temperature value is available. Cleared after the interrupt
register is read.
1st external temperature interrupts
• TMPEXT1[2]: Asserted when the 1st external temperature value is larger than the value stored in
TMPEXT1HI[11:0]. Cleared after the interrupt register is read.
• TMPEXT1[1]: Asserted when the 1st external temperature value is lower than the value stored in
TMPEXT1LO[11:0]. Cleared after the interrupt register is read.
• TMPEXT1[0]: Asserted when a new temperature value is available. Cleared after the interrupt
register is read.
2nd external temperature interrupts
• TMPEXT2[2]: Asserted when the 2nd external temperature value is larger than the value stored in
TMPEXT2HI[11:0]. Cleared after the interrupt register is read.
• TMPEXT2[1]: Asserted when the 2nd external temperature value is lower than the value stored in
TMPEXT2LO[11:0]. Cleared after the interrupt register is read.
• TMPEXT2[0]: Asserted when a new temperature value is available. Cleared after the interrupt
register is read.
High-voltage supply monitor interrupt
15
VMON
• Asserted when the high voltage supply (AVDDIO) falls below approximately 4V.
• Cleared after the interrupt register is read.
ADC Status Registers (Read)
BIT
7:2
15:11
0
FIELD NAME
ADCST[5:0]
ADCST[10:6]
ADCST[11]
DESCRIPTION
Status of ADC data received for ports 0 to 11
• Once new data is written in an ADC data register, the corresponding ADCST bit is asserted.
The new data is written only after the set of samples to average is collected when the averaging
function is enabled.
• This register content is not affected by any related interrupt mask. Activity on ADC-configured
ports is recorded by this register regardless of the mask interrupt register setting.
• Cleared after the interrupt register is read, and after both ADCST[10:0] and ADCST[11] registers
are read, subsequently.
Overcurrent Status Registers (Read)
BIT FIELD NAME
DESCRIPTION
7:2
15:11
0
DACOIST[5:0]
DACOIST[10:6]
DACOIST[11]
Status of DAC drivers overcurrent for ports 0 to 11
• Once a port driver exceeds approximately 50mA, the host can identify which driver caused the
interrupt by reading DACOIST[10:0] and DACOIST[11].
• This register content is not affected by any related interrupt mask. Activity on overcurrent
detection is recorded by these registers regardless of the mask interrupt register setting.
• Cleared after the interrupt register is read, and after both DACOIST[10:0] and DACOIST[11]
registers are read, subsequently.
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