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Version 6323-018
Synopsys, Inc.
May 2017
4
CPU Core Selection
This chapter provides instructions for selecting a CPU core.
4.1 Supported CPU Cores
Following CPU cores can be used with the AXS103 Software Development Platform:
ARC HS36
ARC HS36 in ARC HS34 emulation mode
ARC HS38 single-core mode, core 0
ARC HS38 single-core mode, core 1
Dual-core ARC HS38x2
4.2 Core Selection
To select a CPU core, use the DIP switches on the AXC003 CPU Card and on the ARC SDP
Mainboard. The configuration is selected in the reset state.
SW802 on the AXC003 CPU Card defines the FPGA image to be loaded at power-on reset.
The following bits of SW802 define the FPGA image that is selected:
00
– FPGA image for ARC HS36 CPU
01
– FPGA image for ARC HS38x2 CPU
DIP switches SW2501 and SW2503 on the ARC SDP Mainboard select the core used within
a particular FPGA image:
Bit 6 of SW2501 defines whether the data cache and instruction cache are bypassed,
that is, it selects ARC HS36 or ARC HS34 emulation. For more details, see
on page 56.
Bits 1 to 3 of SW2503 select a dual-core configuration ARC HS38x2.
For the detailed description of DIP switches used for configuration, see