ST STM32F405 User Manual

RM0090 Rev 18 1065/1749
RM0090 Secure digital input/output interface (SDIO)
1075
31.9.8 SDIO data length register (SDIO_DLEN)
Address offset: 0x28
Reset value: 0x0000 0000
The SDIO_DLEN register contains the number of data bytes to be transferred. The value is
loaded into the data counter when data transfer starts.
Note: For a block data transfer, the value in the data length register must be a multiple of the block
size (see SDIO_DCTRL). A data transfer must be written to the data timer register and the
data length register before being written to the data control register.
For an SDIO multibyte transfer the value in the data length register must be between 1 and
512.
313029282726252423222120191817161514131211109876543210
Reserved
DATALENGTH
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:25 Reserved, must be kept at reset value
Bits 24:0 DATALENGTH: Data length value
Number of data bytes to be transferred.

ST STM32F405 Specifications

General

Brand	ST
Model	STM32F405
Category	Computer Hardware
Language	English