Renesas SH7781 - Manual (Page 1217)

24. Multimedia Card Interface (MMCIF)
Rev.1.00 Jan. 10, 2008 Page 1187 of 1658
REJ09B0261-0100
24.3.6 Interrupt Status Registers 0 to 2 (INTSTR0 to INTSTR2)
The INTSTR registers enable or disable MMCIF interrupts FSTAT, TRAN, ERR and FRDY, and
interrupt flags.
(1) INTSTR0
Bit:
Initial value:
R/W:
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0
R/W
FEI FFI DRPI DTI CRPI CMDI DBSYI
R/W R/W R/W R/W R/W R/W R/W
BTI
Bit Bit Name
Initial
Value R/W Description Interrupt
output
7 FEI 0 R/W FIFO Empty Interrupt Flag
0: No interrupt
[Clearing condition]
Write 0 after reading FEI = 1.
(Writing 1 is invalid)
1: Interrupt requested
[Setting condition]
When FIFO becomes empty while FEIE = 1
and data is being transmitted
(when the FIFO_EMPTY bit in CSTR is set)
FSTAT
6 FFI 0 R/W FIFO Full Interrupt Flag
0: No interrupt
[Clearing condition]
Write 0 after reading FFI = 1.
(Writing 1 is invalid)
1: Interrupt requested
[Setting condition]
When FIFO becomes full while FFIE = 1
and data is being received
(when the FIFO_FULL bit in CSTR is set)
FSTAT