Freescale Semiconductor PowerQUICC MPC870, Reference Manual

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MPC885 PowerQUICC Family Reference Manual, Rev. 2
48-10 Freescale Semiconductor
Figure 48-7. DEU Interrupt Control Register
0 1 2 3 4 5 6 7 9 10 11 12 13 14 15 16 31
Field ME AE OFE IFE — IFO OFU — KPE IE ERE CE KSE DSE —
Reset 0x0000_0000
R/W R/W
Addr DEU 0x05038
0 31
Field Reserved
Reset 0x0000_0000
R/W R/W
Addr DEU 0x0503C
Table 48-6. DEU Interrupt Control Register Field Descriptions
Bits Name Description
0 ME Mode Error. An illegal value was detected in the mode register.
0 Mode error enabled
1 Mode error disabled
1 AE Address Error. An illegal read or write address was detected within the DEU
address space.
0 Address error enabled
1 Address error disabled
2 OFE Output FIFO Error. The DEU output FIFO was detected non-empty upon write of
DEU data size register
0 Output FIFO non-empty error enabled
1 Output FIFO non-empty error disabled
3 IFE Input FIFO Error. The DEU input FIFO was detected non-empty upon generation
of done interrupt
0 Input FIFO non-empty error enabled
1 Input FIFO non-empty error disabled
4 — Reserved
5 IFO Input FIFO Overflow. The DEU input FIFO has been pushed while full.
0 Input FIFO overflow error enabled
1 Input FIFO overflow error disabled
Note: When operating as a master, the crypto-channel implements flow-control,
and FIFO size is not a limit to data input. When operated as a target, the
DEU cannot accept FIFO inputs larger than 512 bytes without overflowing.
6 OFU Output FIFO Underflow. The DEU output FIFO has been read while empty.
0 Output FIFO underflow error enabled
1 Output FIFO underflow error disabled
7–9 — Reserved