Section 19 Multimedia Card Interface (MCIF)
Rev. 3.00 Jan 25, 2006 page 632 of 872
REJ09B0286-0300
19.3.2
Command Type Register (CMDTYR)
CMDTYR specifies the command format in conjunction with RSPTYR. For details, refer to table
19.2.
Bit
Bit Name
Initial Value
R/W
Description
7, 6
—
All 0
R
Reserved
These bits are always read as 0 and cannot be
modified.
5
TY5
0
R/W
Specifies multiblock transfer when an extended
command is used in SPI mode. Bits TY1 and
TY0 should be set to B'01 or B'10.
The transfer block size should be set in TBCR,
and the number of transfer blocks should be set
in TBNCR when a command to specify this bit
is used.
4
TY4
0
R/W
This bit is set to 1 when the CMD12M
command is specified. The CMD12M command
can be used only in MMC mode. Bits TY1 and
TY0 should be cleared to B'00.
3
TY3
0
R/W
Specifies stream transfer. Bits TY1 and TY0
should be set to B'01 or B'10. The stream
transfer can be used only in MMC mode.
The command sequence of the stream transfer
specified by this bit ends when it is aborted by
the CMD12M command.
2
TY2
0
R/W
Specifies multiblock transfer in MMC mode. Bits
TY1 and TY0 should be set to B'01 or B'10.
The command sequence of the multiblock
transfer specified by this bit ends when it is
aborted by the CMD12M command.
1
0
TY1
TY0
0
0
R/W
R/W
These bits specify the existence and direction
of transfer data.
00: A command without data transfer
01: A command with read data reception
10: A command with write data transmission
11: Setting prohibited
Содержание H8S/2158
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Страница 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Страница 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
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Страница 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
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