HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 296

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

When making a word or longword access with an 8-bit bus width, or a longword access with a 16-
bit bus width, the bus state controller performs multiple accesses.
When clock ratio Iø : Eø is other than 1 : 1, the basic timing shown in figure 7.8 is repeated, but
when clock ratio I : E is 1 : 1, burst access with no CSn negate period is performed as shown in
figure 7.9.
Read
Write
Note: * DACKn waveform when active-low is specified.
Figure 7.8 Basic Timing of Ordinary Space Access
CKIO
A24–A0
CSn
RD/WR
RD
D31–D0
WEn
D31–D0
BS
DACKn*
T1
T2
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