III PERIPHERAL BLOCK: SERIAL INTERFACE

RSRX0, RSTX0: Ch.0 IDMA request (D6, D7) /

16-bit timer 5, 8-bit timer, serial I/F Ch.0 IDMA request register (0x40292)

RSRX1, RSTX1: Ch.1 IDMA request (D0, D1) / Serial I/F Ch.1, A/D IDMA request register (0x40293)

Specifies whether to invoke IDMA when an interrupt factor occurs.

When using the set-only method (default)

Write "1": IDMA request

Write "0": Not changed

Read: Valid

When using the read/write method

Write "1": IDMA request

Write "0": Interrupt request

Read: Valid

The RSRXx and RSTXx bits are IDMA request bits corresponding to receive-buffer full and transmit-buffer empty interrupt factors, respectively. If the bit is set to "1", IDMA is invoked when an interrupt factor occurs, thus performing a programmed data transfer. If this bit is set to "0", normal interrupt processing is performed, without invoking IDMA.

For details on IDMA, refer to "IDMA (Intelligent DMA)". At initial reset, these bits are set to "0" (interrupt request).

DESRX0, DESTX0: Ch.0 IDMA enable (D6, D7) /

16-bit timer 5, 8-bit timer, serial I/F Ch.0 IDMA enable register (0x40296) DESRX1, DESTX1: Ch.1 IDMA enable (D0, D1) / Serial I/F Ch.1, A/D IDMA enable register (0x40297)

Enables IDMA transfer by means of an interrupt factor.

When using the set-only method (default)

Write "1": IDMA enabled

Write "0": Not changed

Read: Valid

When using the read/write method

Write "1": IDMA enabled

Write "0": IDMA disabled

Read: Valid

The DESRXx and DESTXx bits are IDMA enable bits corresponding to receive-buffer full and transmit-buffer empty interrupt factors, respectively. If the bit is set to "1", the IDMA request by the interrupt factor is enabled. If the bit is set to "0", the IDMA request is disabled.

At initial reset, these bits are set to "0" (IDMA disabled).

SIO2ES0: SIO Ch.2 receive error/FP0 interrupt factor switching

(D0) /Interrupt factor FP function switching register (0x402C5)

Switches the interrupt factor.

Write "1": SIO Ch.2 receive error

Write "0": FP0 input

Read: Valid

Set to "1" to use the SIO Ch.2 receive error interrupt.

Set to "0" to use the FP0 input interrupt.

At power-on, this bit is set to "0".

B-III-8-42

EPSON

S1C33210 FUNCTION PART