Interrupt Sources; Usage Notes; Table 19.6 Mcif Interrupt Sources - Renesas H8S/2158 User Manual

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
MMCIA MCIFI0
MMCIB MCIFI1
MMCIC MCIFI2
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.
Interrupt Source
FIFO empty
FIFO full
Data response
Data transfer end
Command response end
Command transmission end
Data busy end
Block transfer end
CRC error
Data timeout error
Command timeout error
Section 19 Multimedia Card Interface (MCIF)
Interrupt DTC
Flag Activation
FEI Possible
FFI Possible
DPRI Not possible
DTI Not possible
CRPI Not possible
CMDI Not possible
DBSYI Not possible
BTI Not possible
CRCERI Not possible
DTERI Not possible
CTERI Not possible
Rev. 3.00 Jan 25, 2006 page 687 of 872
Priority
High
Low
REJ09B0286-0300