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DesignWare ARC AXC003 CPU Card User Guide
Usage of ARC SDP Mainboard Resources
Synopsys, Inc.
Version 6323-018
May 2017
Note
When a DIP switch is in the right position (
), the corresponding bit in
the control register is
0
.
When a DIP switch is in the left position (
), the corresponding bit in the
control register is
1
.
Table 21
ARC Core Boot Configuration (Mainboard DIP Switch SW2501)
Bit
Description
# 1
Boot mirror select
Switch Position Boot Mirror
00
Disabled
01
Internal ROM
10
Reserved
11
Reserved
# 2
# 3
Bypass loading
Switch Position Pre-bootloader Mode
0 Pre-bootloader bypasses loading
application from SPI flash. Only
default initialization is done.
1 Pre-bootloader looks for the
appropriate application in SPI flash
and runs it if found.
# 4
Reserved
# 5
Reserved
# 6
Cache bypass
Switch Position Cache Mode (HS34/36 only)
0 Data cache and Instruction cache
are used
1 Data cache and Instruction cache
are not used
# 7
Boot start mode
Switch Position Start Mode
0 Start ARC core manually (CREG,
external start button or debugger)
1 Start ARC core autonomously after
reset