13 transfer block number counter (tbncr) – Renesas SH7781 User Manual
Page 1232
24. Multimedia Card Interface (MMCIF)
Rev.1.00 Jan. 10, 2008 Page 1202 of 1658
REJ09B0261-0100
24.3.13
Transfer Block Number Counter (TBNCR)
A value other than 0 must be written to the TBNCR register if a multiple block transfer is selected
through the TY5 and TY6 bits in the CMDTYR. Set the transfer block number in the TBNCR.
The value of TBNCR is decremented by one as each block transfer is executed and the command
sequence ends when the TBNCR value equals 0.
TBNCR
Bit:
Initial value:
R/W:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit Bit
Name
Initial
Value R/W Description
15 to 0
TBNCR
All 0
R/W
Transfer Block Number Counter
[Clearing condition]
When the specified number of blocks are transferred or
0 is written to TBNCR.