Epson S1C33210 - Manual (Page 359)

III PERIPHERAL BLOCK: SERIAL INTERFACE
S1C33210 FUNCTION PART EPSON B-III-8-43
SIO2RS0: SIO Ch.2 receive-buffer full/FP1 interrupt factor switching
(D1) / Interrupt factor FP function switching register (0x402C5)
Switches the interrupt factor.
Write "1": SIO Ch.2 receive-buffer full
Write "0": FP1 input
Read: Valid
Set to "1" to use the SIO Ch.2 receive-buffer full interrupt.
Set to "0" to use the FP1 input interrupt.
At power-on, this bit is set to "0".
SIO3ES0: SIO Ch.3 receive error/FP2 interrupt factor switching
(D2) /Interrupt factor FP function switching register (0x402C5)
Switches the interrupt factor.
Write "1": SIO Ch.3 receive error
Write "0": FP2 input
Read:
Valid
Set to "1" to use the SIO Ch.3 receive error interrupt.
Set to "0" to use the FP2 input interrupt.
At power-on, this bit is set to "0".
SIO2TS0: SIO Ch.2 transmit-buffer empty/FP3 interrupt factor switching
(D3) / Interrupt factor FP function switching register (0x402C5)
Switches the interrupt factor.
Write "1": SIO Ch.2 transmit-buffer empty
Write "0": FP3 input
Read: Valid
Set to "1" to use the SIO Ch.2 transmit-buffer empty interrupt.
Set to "0" to use the FP3 input interrupt.
At power-on, this bit is set to "0".
SIO3RS0: SIO Ch.3 receive-buffer full/FP4 interrupt factor switching
(D4) / Interrupt factor FP function switching register (0x402C5)
Switches the interrupt factor.
Write "1": SIO Ch.3 receive-buffer full
Write "0": FP4 input
Read: Valid
Set to "1" to use the SIO Ch.3 receive-buffer full interrupt.
Set to "0" to use the FP4 input interrupt.
At power-on, this bit is set to "0".
T8CH4S0: 8-bit timer 4 underflow/FP5 interrupt factor switching
(D5) / Interrupt factor FP function switching register (0x402C5)
Switches the interrupt factor.
Write "1": 8-bit timer 4 underflow
Write "0": FP5 input
Read: Valid
Set to "1" to use the 8-bit timer 4 underflow interrupt.
Set to "0" to use the FP5 input interrupt.
At power-on, this bit is set to "0".