stlc5464 STMicroelectronics, stlc5464 Datasheet - Page 73

• Manufacturer Part Number: stlc5464
• Description: Multi-hdlcwith Switching Matrix Associated
• Manufacturer: STMicroelectronics

VIII - INTERNAL REGISTERS (continued)
VIII.29 - Interrupt Register - IR (38)H
This register is read only.
When this register is read by the microprocessor, this register is reset (0000)
If not masked, each bit at ”1” generates ”1” on INT0 pin.
HDLC
C/IRX
MRX
MTX
ICOV
RxFWAR
RxFOV
TxFWAR
TxFOV
INTFWAR : INTERRUPT CONTROLLER FIFO WARNING
INTFOV
TIM
PRSR
SFCO
bit15
Nu
Nu
SFCO PRSR
: HDLC INTERRUPT
: Command/Indicate Rx Interrupt
: Rx MONITOR CHANNEL INTERRUPT
: Tx MONITOR CHANNEL INTERRUPT
: INTERRUPT CIRCULAR OVERLOAD
: Rx DMA CONTROLLER FIFO WARNING
: Rx DMA CONTROLLER FIFO OVERLOAD
: Tx DMA CONTROLLER FIFO WARNING
: Tx DMA CONTROLLER FIFO OVERLOAD
: INTERRUPT CONTROLLER FIFO OVERLOAD
: TIMER
: Pseudo Random Sequence Recovered
: Sequence Fault Counter Overload
HDLC = 1, Tx HDLC or Rx HDLC has generated an interrupt The status is in the HDLC
queue.
C/IRX = 1, Rx Commande/Indicate has generated an interrupt. The status is in the HDLC
queue.
MRX = 1, one Rx MONITOR CHANNEL has generated an interrupt.The status is in the Rx
Monitor Channel queue.
MTX = 1, one or several Tx MONITOR CHANNELS have generated an interrupt. Transmit
Monitor Interrupt Register (TMIR) indicates the Tx Monitor Channels which have generated
this interrupt.
ICOV = 1, One of three circular interrupt memories is completed.
RxFWAR = 1, Rx DMA CONTROLLER has generated an interrupt, its fifo is 3/4 completed.
RxFOV = 1, Rx DMA CONTROLLER has generatedan interrupt,it cannottransfer data from
Rx HDLC to external memory, its fifo is completed.
TxFWAR = 1, Tx DMA CONTROLLER has generated an interrupt, its fifo is 3/4 completed.
TxFOV = 1, Tx DMACONTROLLER has generated an interrupt, it cannot transfer data from
Tx HDLC to external memory, its fifo is completed.
INTFWAR = 1, INTERRUPT CONTROLLER has generated an interrupt, its fifo is 3/4
completed.
INTFOV = 1, INTERRUPT CONTROLLER has generated an interrupt, it cannot transfer
status from DMA and GCI controllers to external memory, its internal fifo is completed.
TIM = 1, the programmable timer has generated an interrupt.
PRSR = 1,the Pseudo Random Sequencetransmitted by the generatorhas been recovered
by the analyzer.
SFCO = 1, the Fault Counter has reached the value FFFF(H).
TIM
FOV
INT
FWAR
INT
After reset (0000)
FOV
bit8
Tx
FWAR
bit7
Tx
FOV
Rx
H
FWAR
Rx
ICOV
H
.
MTX MRX C/IRX HDLC
STLC5464
bit 0
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