ST18D952 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST18D952' PDF : 67 Pages View PDF
ST18952
• Control logic for instruction execution through the PC-board emulator control.
Figure 14.1 Emulation block diagram
BP registers
Comparators
IA
XA / YA
XD / YD
IA
RD/WR
D950
TAP
Control
Registers
Control
Logic
PC trace
ERQ, IDLE, SNAP
The emulation controller interface (see Table 2.8 and Table 2.9 on page 8) include pins of
different types:
• ERQ, IDLE and SNAP are used by the emulator tools.
• HALTACK indicates that the processor is halted in emulation mode.
• AIEBP, AXEBP and AYEBP may be used to set additional conditions for break-
point validation on the respective IA/XA/YA buses.
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