h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 684

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 Multimedia Card Interface (MCIF)
19.3.2
CMDTYR specifies the command format in conjunction with RSPTYR. For details, refer to table
19.2.
Rev. 3.00 Jan 25, 2006 page 632 of 872
REJ09B0286-0300
Bit
7, 6
5
4
3
2
1
0
Bit Name
—
TY5
TY4
TY3
TY2
TY1
TY0
Command Type Register (CMDTYR)
Initial Value
All 0
0
0
0
0
0
0
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0 and cannot be
modified.
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.
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.
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.
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.
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