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STLC5048

TA7..0 and TB7..0, contents of PCHKA and PCHKB registers, define the minimum duration of input A and B to

generate interrupt; spurious transitions shorter than the programmed value are ignored.

The time width can be calculated according to the formula:

Time - Width A = (TA7..0)*64

µs

Time - Width B = (TB7..0)*64

µs

If PCHKA/B is programmed to 00h the persistency check is not performed and any detected transition will gen-

erate interrupt.

All the inputs, with or without persistency check, are sampled with a repetition rate of 32

µs.

Interrupt Register (INT)

Addr=10h; Reset Value=00h

Read Only

In dynamic I/O configuration the ID3..0 bits latch the interrupt request from the related channel (SLIC). Any sin-

gle bit IDn is cleared after reading related I/O register or by setting MCn bit High (i.e. when channel n is disabled

to generate interrupt).

In static I/O configuration ID0 and ID2 bits latch the interrupt request from I/O11..0 and CS3..0 respectively:

ID0: is set High when the interrupt is requested from any the I/O11..0 lines.

ID2: is set High when the interrupt is requested from any the CS3..0 (configured as I/O).

ID0 and ID2 are cleared after reading related I/O register.

ID1 and ID3 are don’t care.

ITV = 1: If the interrupt has been generated by time-out violation on the MCU serial interface.

IPCM = 1: When transmit PCM data reading/writing test is enabled an interrupt is generated every time valid

data are available (RRD bit set to 1) or must be written (WRD bit set to 1). The interrupt is cleared after reading/

writing the data in the PCMRD/PCMWD register via the MCU interface.

ICKF = 1: If the interrupt has been generated by a clock failure on PCM port (MCLK).

The INT register is cleared after reading operation only if signals (alarm cause) are inactive.

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

R/W

0

001010

TA7

TA6

TA5

TA4

TA3

TA2

TA1

TA0

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

R/W

0

001011

TB7

TB6

TB5

TB4

TB3

TB2

TB1

TB0

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

10

010000

ITV

IPCM

ICKF

ID3

ID2

ID1

ID0