Figure 6-4 Transfer Type Examples - Epson ARM720T Core Cpu Manual

6: The Bus Interface
Figure 6-4 shows some examples of different transfer types.
HCLK
HTRANS[1:0]
HADDR[31:0]
HBURST[2:0]
HWDATA[31:0]
HREADY
HRDATA[31:0]
In Figure 6-4:
• The first transfer is the start of a burst and is therefore nonsequential.
• The master performs the second transfer of the burst immediately.
• The master performs the third transfer of the burst immediately, but this time the
slave is unable to complete and uses HREADY to insert a single wait state.
• The final transfer of the burst completes with zero wait states.
6-6
NONSEQ SEQ SEQ
0x20 0x24 0x28
INCR
Data
0x20
Data
0x20

Figure 6-4 Transfer type examples

EPSON
SEQ
0x2C
Data Data
0x24 0x28
Data Data
0x24 0x28
ARM720T CORE CPU MANUAL
Data
0x2C
Data
0x2C