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SH7785 Datasheet(PDF) 96 Page - Renesas Technology Corp

Part # SH7785
Description  32-Bit RISC Microcomputer
PDF  1692 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7785 Datasheet(HTML) 96 Page - Renesas Technology Corp

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4. Pipelining
Rev.1.00 Jan. 10, 2008 Page 66 of 1658
REJ09B0261-0100
Figure 4.2 shows the instruction execution patterns. Representations in figure 4.2 and their
descriptions are listed in table 4.1.
Table 4.1
Representations of Instruction Execution Patterns
Representation
Description
E1
E2
E3
WB
CPU EX pipe is occupied
S1
S2
S3
WB
CPU LS pipe is occupied (with memory access)
s1
s2
s3
WB
CPU LS pipe is occupied (without memory access)
E1/S1
Either CPU EX pipe or CPU LS pipe is occupied
E1S1
E1s1
,
Both CPU EX pipe and CPU LS pipe are occupied
M2
M3
MS
CPU MULT operation unit is occupied
FE1 FE2 FE3 FE4 FE5 FE6
FS
FPU-EX pipe is occupied
FS1 FS2 FS3 FS4 FS
FPU-LS pipe is occupied
ID
ID stage is locked
Both CPU and FPU pipes are occupied



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