MAX14830 Datasheet, PDF (31/68 Pages) Maxim Integrated Products – Quad Serial UART with 128-Word FIFOs

MAX14830
Quad Serial UART with 128-Word FIFOs
IRQEn—IRQ Enable Register
ADDRESS:
MODE:
BIT
7
NAME CTSIEn
RESET
0
0x01
R/W
6
RFifoEmtyIEn
0
5
TFifoEmtyIEn
0
4
TFifoTrgIEn
0
3
RFifoTrgIEn
0
2
STSIEn
0
1
SpclChrIEn
0
0
LSRErrIEn
0
The IRQEn register is used to enable the IRQ physical interrupt. Any of the eight ISR interrupt sources can be enabled
to generate an IRQ. The IRQEn bits only influence the IRQ output and do not have any effect on the ISR contents or
behavior. Every one of the IRQEn bits operates on an ISR bit.
Bit 7: CTSIEn
The CTSIEn bit enables IRQ interrupt generation when the CTSInt interrupt bit is set in the ISR. Set the CTSIEn bit low
to disable IRQ generation from CTSInt.
Bit 6: RFifoEmtyIEn
The RFifoEmtyIEn bit enables IRQ interrupt generation when the RFifoEmptyInt interrupt bit is set in the ISR. Set the
RFifoEmtyIEn bit low to disable IRQ generation from RFifoEmptyInt.
Bit 5: TFifoEmtyIEn
The TFifoEmtyIEn bit enables IRQ interrupt generation when the TFifoEmptyInt interrupt bit is set in the ISR. Set the
TFifoEmtyIEn bit low to disable IRQ generation from TFifoEmptyInt.
Bit 4: TFifoTrgIEn
The TFifoTrgIEn bit enables IRQ interrupt generation when the TFifoTrigInt interrupt bit is set in the ISR. Set TFifoTrgIEn
bit low to disable IRQ generation from TFifoTrigInt.
Bit 3: RFifoTrgIEn
The RFifoTrgIEn bit enables IRQ interrupt generation when the RFifoTrigInt interrupt bit is set in the ISR. Set the
RFifoTrgIEn bit low to disable IRQ generation from RFifoTrigInt.
Bit 2: STSIEn
The STSIEn bit enables IRQ interrupt generation when the STSInt interrupt bit is set in the ISR. Set the STSIEn bit low
to disable IRQ generation from STSInt.
Bit 1: SpclChrIEn
The SpclChrIEn bit enables IRQ interrupt generation when the SpCharInt interrupt bit is set in the ISR. Set the
SpclChrIEn bit low to disable IRQ generation from SpCharInt.
Bit 0: LSRErrIEn
The LSRErrIEn bit enables IRQ interrupt generation when the LSRErrInt interrupt bit is set in the ISR[0]. Set the
LSRErrIEn low to disable IRQ generation from LSRErrInt.
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