R01UH0823EJ0100 Rev.1.00 Page 429 of 1823
Jul 31, 2019
RX23W Group 20. Event Link Controller (ELC)
20.4 Usage Notes
20.4.1 Setting ELSRn Register
(1) Setting ELSR8 Register
Set this register to 32h (LPT compare match).
(2) Setting ELSR18 and ELSR19 Registers
Specify an event number from among 63h to 6Ah. Do not set the value other than preceding numbers.
(3) Setting ELSR24, ELSR25, ELSR26, and ELSR27 Registers
Do not set the DOC data operation condition met signal (6Ah).
20.4.2 Setting Bit-Rotating Operation of Output Port Groups
When the values of the PDBFn register (n = 1, 2) are changed in the bit-rotating operation mode of the output port group,
set the ELSRn register again. Set intervals for generating the event as at least one PCLKB cycle when using it for bit-
rotating operation.
20.4.3 Linking DMA/DTC Transfer End Signal as Event
When linking the DMA/DTC transfer end signal as an event signal, do not set the same peripheral module as the
DMA/DTC transfer destination and event link destination. If set, the peripheral module might be started before
DMA/DTC transfer to the peripheral module is completed.
20.4.4 Clock Settings
To link events, make sure that the ELC and the related peripheral modules are in an operational condition. The peripheral
modules cannot operate if they are in the module stop state or in mode which they stop (software standby mode).
20.4.5 Module Stop Function Setting
ELC operation can be disabled or enabled using module stop control register B (MSTPCRB). After reset is released, the
ELC function is disabled. Register access is enabled by releasing the module stop state. For details, refer to
section 11,
Low Power Consumption
.
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