RX610 Group
11. Buses
R01UH0032EJ0120 Rev.1.20
Page 268 of 1006
Feb 20, 2013
EWENB Bit (External Wait Enable)
This bit enables or disables external wait.
Writing 1 to this bit selects external wait and allows control of the number of waits in each cycle with the WAIT# signal.
In this state, wait cycles are inserted while the WAIT# signal is at the low level.
Writing 0 to this bit disables the WAIT# signal.
PRENB Bit (Page Read Access Enable)
This bit enables or disables page read accesses.
PWENB Bit (Page Write Access Enable)
This bit enables or disables page write accesses.
PRMOD Bit (Page Read Access Mode Select)
This bit selects a page read access operating mode.
Writing 0 to this bit selects normal access compatible mode where the RD# signal is negated and RD assert wait is
inserted each time a piece of data is read. However, when there is no RD assert wait, the RD# signal is negated only
when the last data is transferred on the external bus.
Writing 1 to this bit selects external data read continuous assertion mode where RD assert wait is inserted and the RD#
signal is continuously asserted during this time period.
Summary of Contents for RX600 Series
Page 1006: ...RX610 Group R01UH0032EJ0120 ...