Analog Devices Blackfin ADSP-BF537 Hardware Reference Manual page 1000

Booting Process
Figure 19-5. 10-Byte Header Contents
Figure 19-6 shows the individual flag word bits.
Flag Word
FINAL
0 - Non-last block
1 - Last block
PPORT[1:0]
Port of HWAIT signal
00 - HWAIT disabled
01 - HWAIT on Port F
10 - HWAIT on Port G
11 - HWAIT on Port H
PFLAG[3:0]
GPIO number used for
HWAIT signal
Figure 19-6. Individual Control Bits of the Flag Word Register
19-14
10-BYTE HEADER FOR BLOCK 1
BLOCK 1
10-BYTE HEADER FOR BLOCK 2
BLOCK 2
10-BYTE HEADER FOR BLOCK 3
BLOCK 3
. . .
10-BYTE HEADER FOR BLOCK n
15 14 13 12 11 10 9 8
ADSP-BF537 Blackfin Processor Hardware Reference
32-BIT ADDRESS
32-BIT COUNT
16-BIT FLAG
7 6 5 4 3 2 1 0
ZEROFILL
0 - Non-ZEROFILL block
1 - ZEROFILL block
RESVECT
1 - Always 1
INIT
0 - Non-INIT block
1 - INIT block
IGNORE
0 - Non-IGNORE block
1 - IGNORE block