II CORE BLOCK: ITC (Interrupt Controller)
DExxx: IDMA enable register
Enable or disable the IDMA request.
When using the
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
If a bit of this register is set to "1", the IDMA request by the interrupt factor is enabled. If the register bit is set to "0", the IDMA request is disabled.
After an initial reset, this register is set to "0" (IDMA is disabled).
RSTONLY: Interrupt factor flag reset method selection
(D0) / Flag set/reset method select register (0x4029F)
Select the method for resetting the interrupt factor flag.
Write "1":
Write "0": Read/write method
Read: Valid
With the
The interrupt factor flags for which "0" has been written can neither be set nor reset. Therefore, this method ensures that only a specific factor flag is reset. However, when using
The read/write method is selected by writing "0" to RSTONLY. When this method is selected, interrupt factor flags can be read and written as for other registers. Therefore, the flag is reset by writing "0" and set by writing "1". In this case all factor flags for which "0" has been written are reset. Even in a
After an initial reset, RSTONLY is set to "1"
IDMAONLY: IDMA request register set method selection
(D1) / Flag set/reset method select register (0x4029F)
Select the method for setting the IDMA request registers.
Write "1":
Write "0": Read/write method
Read: Valid
With the
The IDMA request bits for which "0" has been written can neither be set nor reset. Therefore, this method ensures that only a specific IDMA request bit is set. However, when using
The read/write method is selected by writing "0" to IDMAONLY. When this method is selected, IDMA request bits can be read and written as for other registers. Therefore, the IDMA request bit is reset by writing "0" and set by writing "1". In this case all IDMA request bits for which "0" has been written are reset. Even in a
After an initial reset, IDMAONLY is set to "1"
EPSON | S1C33L03 FUNCTION PART |