Selecting Execution Units—Eu_Sel0 And Eu_Sel - Freescale Semiconductor MPC8313E Family Reference Manual

Bits Name
0–7 DONE When done writeback is used, then at the completion of descriptor processing this byte is written with the
value 0xFF. To determine when done writeback is used, see the CDWE, NT, and CDIE fields in the channel
configuration register
8–34 — Reserved.
35–36 ICR0 Integrity check result from primary. These bits are supplied by the primary EU when descriptor processing
is complete.
00 No integrity check was performed.
01 The integrity check passed.
10 The integrity check failed.
11 Reserved
37–42 — Reserved.
43–44 ICR1 Integrity check result from secondary. These bits are supplied by the secondary EU (if any) when descriptor
processing is complete.
00 No integrity check was performed.
01 The integrity check passed.
10 The integrity check failed.
11 Reserved
45–63 — Reserved.
14.3.2.1 Selecting Execution Units—EU_SEL0 and EU_SEL1
Table 14-6 shows the values for EU_SEL0 and EU_SEL1 in the descriptor header. The following rules
govern the choices for these fields:
1. EU_SEL0 values of 'No EU selected' or 'Reserved' will result in an 'Unrecognized Header Error'
condition during processing of the descriptor header.
2. The only valid choices for EU_SEL1 are 'No EU selected' or MDEU. Any other choice will result
in an 'Unrecognized Header' error condition.
3. If EU_SEL1 is MDEU, then EU_SEL0 must be DEU or AESU. All other values of EU_SEL0 will
result in an 'Unrecognized header' error condition.
MPC8313E PowerQUICC II Pro Integrated Processor Family Reference Manual, Rev. 3
Freescale Semiconductor
Table 14-5. Header Dword Writeback Bit Definitions
(Table 14-31).
Table 14-6. EU_SEL0 and EU_SEL1 Values
Value
(Binary)
0000 No EU selected
0010 DEU
0011 MDEU
0110 AESU
Others Reserved
1111 Reserved for header writeback
Description
Selected EU
Security Engine (SEC) 2.2
14-13