Section 19 Multimedia Card Interface (MCIF)
Rev. 3.00 Jan 25, 2006 page 644 of 872
REJ09B0286-0300
Bit
Bit Name
Initial Value
R/W
Description
7
to
1
—
All 0
R
Reserved
These bits are always read as 0 and cannot be
modified.
0
CTSEL0
0
R/W
Command Timeout Select Specifies the number
of transfer clocks from command transmission
completion to response reception completion.
0: 128 transfer clocks
1: 256 transfer clocks
19.3.11 Data Timeout Register (DTOUTR)
DTOUTR specifies the cycle to generate a data timeout. The 16-bit counter (DTOUTC) and a
prescaler, to which the CPU does not have access, count the system clock to monitor the data
timeout. The prescaler always counts the system clock, and outputs a count pulse for every 10000
system clocks. The DTOUTC starts counting the prescaler output from the start of the command
sequence. The DTOUTC is cleared when the command sequence has ended, or when the
command sequence has been aborted by setting the CMDOFF bit to 1, after which the DTOUTC
stops counting the prescaler output.
When the command sequence does not end, the DTOUTC continues counting the prescaler output,
and enters the data timeout error state when the number of prescaler outputs reaches the number
specified in DTOUTR. When the DTERIE bit in INTCR1 is set to 1, the DTERI flag in INTSTR1
is set. As the DTOUTC continues counting prescaler output, the DTERI flag setting condition is
repeatedly generated. To perform data timeout error handling, the command sequence should be
aborted by setting the CMDOFF bit to 1, and then the DTERI flag should be cleared to prevent
extra-interrupt generation.
For a command with data busy status, as the command sequence is terminated before entering the
data busy state, data timeout cannot be monitored. Timeout in the data busy state should be
monitored by firmware.
Bit
Bit Name
Initial Value
R/W
Description
15
to
0
—
All 1
R/W
Data Timeout Time/10000
Data timeout time can be obtained by system
clock cycle
×
DTOUTR setting value
×
10000.
Содержание H8S/2158
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Страница 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
Страница 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
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Страница 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
Страница 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Страница 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Страница 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Страница 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Страница 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
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...
Страница 744: ...Section 20 Encryption Operation Circuit DES and GF Rev 3 00 Jan 25 2006 page 690 of 872 REJ09B0286 0300...
Страница 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Страница 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Страница 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Страница 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Страница 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Страница 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Страница 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...