TC1796
System Units (Vol. 1 of 2)
LMB External Bus Unit
User’s Manual 13-23 V2.0, 2007-07
EBU, V2.0
13.4.3.2 Boot Configuration Value
The EBU can support boot operation from 16-bit or 32-bit wide memories. The format of
the Boot Configuration Value is as follows:
Boot Configuration Value
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RES32
1514131211109876543210
CON
F32
BIT
CMULT BCGEN WAIT
WAI
TINV
ADDRC WAITRDC RES
AALI
GN
Field Bits Description
AALIGN 0 Address Alignment
Loaded into EBU_BUSCON0.AALIGN.
RES 1 Reserved
Reserved for future use. For TC1796, this bit must be set
to 0.
WAITRDC [4:2] Number of Wait States for Read Accesses
Loaded into EBU_BUSAP0.WAITRDC.
ADDRC [6:5] Number of Cycles in the Address Phase
Loaded into EBU_BUSAP0.ADDRC.
WAITINV 7 WAIT Input Polarity Control
Loaded into EBU_BUSCON0.WAITINV.
WAIT [9:8] External Wait State Control
Loaded into EBU_BUSCON0.WAIT.
BCGEN [11:10] Byte Control Signal Control
Loaded into EBU_BUSCON0.BCGEN.
CMULT [14:12] Cycle Multiplier Control
Loaded into EBU_BUSCON0.CMULT.
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