Deu Status Register (Deusr) - Freescale Semiconductor MPC8313E Family Reference Manual

14.4.1.5

DEU Status Register (DEUSR)

The DEU status register (DEUSR), displayed in
DEU internal signals. The DEUSR is read-only. Writing to this location will result in address error being
reflected in the DEU interrupt status register (DEUISR).
0
Field —
Reset
R/W
Addr
Table 14-14 describes the DEUSR fields.
Bits Name
0–39 — Reserved
40–47 OFL The number of dwords currently in the output FIFO
48–55 IFL The number of dwords currently in the input FIFO
56–57 — Reserved
58 HALT Halt. Indicates that the DEU has halted due to an error.
0 DEU not halted
1 DEU halted
Note: Because the error causing the DEU to stop operating may be masked before reaching the interrupt
59–60 — Reserved
61 IE Interrupt error. This status bit reflects the state of the ERROR interrupt signal, as sampled by the controller
interrupt status register
0 DEU is not signaling error
1 DEU is signaling error
62 ID Interrupt done. This status bit reflects the state of the DONE interrupt signal, as sampled by the controller
interrupt status register
0 DEU is not signaling done
1 DEU is signaling done
63 RD Reset done. This status bit, when high, indicates that DEU has completed its reset sequence, as reflected
in the signal sampled by the appropriate channel.
0 Reset in progress
1 Reset done
Note: Reset Done resets to 0, but has typically switched to 1 by the time a user checks the register,
MPC8313E PowerQUICC II Pro Integrated Processor Family Reference Manual, Rev. 3
Freescale Semiconductor
39 40 47 48
OFL
Figure 14-11. DEU Status Register (DEUSR)
Table 14-14. DEUSR Field Descriptions
status register (ISR), the DEU interrupt status register (DEUISR) is used to provide a second source
of information regarding errors preventing normal operation.
(Section 14.6.4.3, "Interrupt Status Register
(Section 14.6.4.3, "Interrupt Status Register
indicating the EU is ready for operation.
Figure 14-11, contains 6 fields that reflect the state of
55 56 57 58
IFL — HALT
0
R
DEU 0x3_2028
Description
Security Engine (SEC) 2.2
59 60 61 62
— IE ID
(ISR)").
(ISR)").
63
RD
14-23