80960JA Datasheet, PDF (70/77 Pages) Intel Corporation – EMBEDDED 32-BIT MICROPROCESSOR

80960JA/JF/JD/JT 3.3 V Microprocessor
Table 26.
Natural Boundaries for Load and Store Accesses
Data Width
Byte
Short Word
Word
Double Word
Triple Word
Quad Word
Natural Boundary (Bytes)
1
2
4
8
16
16
Table 27.
Summary of Byte Load and Store Accesses
Address Offset from
Natural Boundary
(in Bytes)
+0 (aligned)
Accesses on 8-Bit Bus
(WIDTH1:0=00)
• byte access
Accesses on 16 Bit
Bus (WIDTH1:0=01)
• byte access
Accesses on 32 Bit
Bus (WIDTH1:0=10)
• byte access
Table 28.
Summary of Short Word Load and Store Accesses
Address Offset from
Natural Boundary
(in Bytes)
+0 (aligned)
+1
Accesses on 8-Bit Bus
(WIDTH1:0=00)
• burst of 2 bytes
• 2 byte accesses
Accesses on 16 Bit
Bus (WIDTH1:0=01)
• short-word access
• 2 byte accesses
Accesses on 32 Bit
Bus (WIDTH1:0=10)
• short-word access
• 2 byte accesses
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