HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 149

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

Table 4.6
Type
Instruction CPU
fetch
Data
read/write DMAC,
Notes: 1. Address errors do not occur during the synchronous DRAM mode register write cycle.
Bus Cycle
2. 16-byte DMAC transfers use longword accesses.
Bus
Master
CPU or
E-DMAC
Bus Cycles and Address Errors
Bus Cycle Description
Instruction fetched from even address*
Instruction fetched from odd address*
Instruction fetched from other than on-chip peripheral
module space*
Instruction fetched from on-chip peripheral module
space*
Word data accessed from even address*
Word data accessed from odd address*
Longword data accessed from a longword boundary*
Longword data accessed from other than a longword
boundary*
Access of cache purge space, address array read/write
space, on-chip peripheral module space, or
synchronous DRAM mode setting space by PC-relative
addressing
Access of cache purge space, address array read/write
space, data array read/write space, on-chip peripheral
module space, or synchronous DRAM mode setting
space by a TAS.B instruction
Byte, word, or longword data accessed in on-chip
peripheral module space at addresses H'FFFFFC00 to
H'FFFFFCFF
Longword data accessed in on-chip peripheral module
space at addresses H'FFFFFE00 to H'FFFFFEFF
Word or byte data accessed in on-chip peripheral
module space at addresses H'FFFFFE00 to
H'FFFFFEFF
Byte data accessed in on-chip peripheral module space
at addresses H'FFFF0000 to H'FFFFF0FF or
H'FFFFFF00 to H'FFFFFFFF
Word or longword data accessed in on-chip peripheral
module space at addresses H'FFFF0000 to
H'FFFFF0FF or H'FFFFFF00 to H'FFFFFFFF
1
1
1
1
1
1
1
1
Address Errors
None (normal)
Address error
occurs
None (normal)
Address error
occurs
None (normal)
Address error
occurs
None (normal)
Address error
occurs
Address error
occurs
Address error
occurs
None (normal)
Address error
occurs
None (normal)
Address error
occurs
None (normal)
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