Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 1455 of 1823
Jul 31, 2019
RX23W Group 40. SD Host Interface (SDHIa)
Figure 40.10 Issuing the Single Block Read Command
Clear the flag register
Set the SDCLKCR register.
SDSIZE = Transfer data size
SDIMSK1 = 0000 FFFEh
SDIMSK2 = 0000 7F80h
Response end or
error occurred?
SDSTS1 = 0000 FFFEh Clear the flags.
SDARG = Argument field value
SDCMD = 0000 0011h
CMD17 (single block read)
issued
Error (communication error or timeout)
Read the SDRSP10 register Check the response.
SDIMSK1 = 0000 FFFBh
SDIMSK2 = 0000 7E80h
Enable the access end interrupt
Enable the BRE interrupt
Is the BRE flag 1 or
did an error occur?
SDSTS2 = 0000 FEFFh Clear the flags.
Read the amount of data set in the
SDSIZE.LEN[9:0] bits from the SDBUFR
register
Read data.
Access end?
SDSTS1 = 0000 FFFBh Clear the flags.
Error processing
(clear the interrupt flags)
No
Yes
No
Yes
No
Yes
Start
End
Error (communication error or timeout)

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English