Section 19 Multimedia Card Interface (MCIF)
Rev. 3.00 Jan 25, 2006 page 687 of 872
REJ09B0286-0300
19.7
Interrupt Sources
Table 19.6 lists the MCIF interrupt sources. The interrupt sources are classified into three groups,
each to which an interrupt vector is assigned. Each interrupt source can be individually enabled by
the enable bits in INTCR0 and INTCR1. A disabled interrupt source does not set the flag.
The MMCIA interrupts can be used as DTC activation interrupt sources.
Table 19.6 MCIF Interrupt Sources
Name
Interrupt Source
Interrupt
Flag
DTC
Activation
Priority
FIFO empty
FEI
Possible
High
MMCIA
MCIFI0
FIFO full
FFI
Possible
Data response
DPRI
Not possible
Data transfer end
DTI
Not possible
Command response end
CRPI
Not possible
Command transmission end
CMDI
Not possible
Data busy end
DBSYI
Not possible
MMCIB
MCIFI1
Block transfer end
BTI
Not possible
CRC error
CRCERI
Not possible
Data timeout error
DTERI
Not possible
MMCIC
MCIFI2
Command timeout error
CTERI
Not possible
Low
19.8
Usage Notes
1. When activating the DTC with an MCIF interrupt source, correct operation is not guaranteed if
the DISEL bit in DTC mode register B (MRB) is cleared to 0. Be sure to set the DISEL bit to 1
before DTC activation.
2. MCIF operation can be enabled or disabled by the SMSTPB6 bit in subchip module stop
control register BL (SUBMSTPBL). In the initial state, MCIF operation is enabled. The MCIF
registers can be accessed by clearing module stop mode.
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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