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DesignWare ARC AXC003 CPU Card User Guide
AXI Tunnel Registers
Synopsys, Inc.
Version 6323-018
May 2017
IMAGE_SRC
0x0
[2]
bypass (i.e. ARC core will enter HALT state after pre-boot)
0x1
SPI FLASH
0x2
Reserved
0x3
Reserved
0x4
Reserved
0x5
Reserved
0x6
Reserved
0x7
Reserved
6
Reserved
RW
0x0
Reserved
7
MODE_HS34
RW
0x0
[3]
HS36 (Cache enabled)
0x1
HS34 emulation (Cache disabled)
1) Reset value for MIRROR[1:0] is sampled from SW2501[2:1] pin during power-on-reset
2) Reset value for IMAGE_SRC[1:0] is sampled from SW2501[4:3] pin during power-on-reset
3) Reset value for MODE_HS34 is sampled from SW2501[6] pin during power-on-reset.
9.7 AXI Tunnel Registers
TUN_CTRL Register
31
2
1
0
Reserved
PR/O[1:0]
Address offset: 0x14A0
Reset Value:
0x0000_0000
Access:
RW
PRIO[1:0] controls the priority setting for the tunnel arbitration
PRIO = 0
→ AXI master and slave have equal priority
(round-robin)
PRIO = 1
→ axis master has the highest priority
PRIO = 2
→ AXI slave has the highest priority
PRIO = 3]
→ illegal
TUN_STAT Register
31
4
3
2
1
0
Reserved
STAT0