参数资料
型号: EC000UM
英文描述: EC000 Core User's Manual (SCM68000)
中文描述: EC000核心用户手册(SCM68000)
文件页数: 136/145页
文件大小: 829K
代理商: EC000UM
Exception Processing
MOTOROLA
EC000 CORE PROCESSOR USER’S MANUAL
4-5
Figure 4-2. Interrupt Acknowledge Cycle Timing Diagram (Sheet 2 of 3)
CLKI
FC2–FC0
A31–A4
ASB
UDSB
LDSB
DSB
RWB
DTACKB
D15–D8
D7–D0
IPLB2–IPLB0
A3–A1
A0
ERWB
DOEB
AOEB
COEB
RMCB
SIZ1–SIZ0
TSCAE
*During an IACK cycle, although a vector number is one byte, both data strobes are asserted due to the microcode used for exception processing.
The processor does not recognize anything on D15–D8 at this time.
IACK CYCLE*
STACK STATUS
REGISTER
ON SSP
S0 S1 S2 S3 S4 S5 S6 S7
S7
S0 S1 S2 S3 S4 S5 S6
S7
STACK UPPER
WORD OF PC
ON SSP
S7
S0 S1 S2 S3 S4 S5 S6
JUSTIFY
VECTOR NUMBER
ACQUISITION
S0
FCx = $5
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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