5.3 Device Emulation Registers
Device Emulation Registers
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These registers are used to control the protection mode of the C28x CPU and to monitor some critical
device signals. The registers are defined in Table 5-15 .
Table 5-15. Device Emulation Registers
Name Address Size (x16) Description
DEVICECNF 0x0880 2 Device Configuration Register
0x0881
PARTID 0x380090 1 Part ID Register
CLASSID 0x0882 1 Class ID Register
REVID 0x0883 1 Revision ID Register
PROTSTART 0x0884 1 Block Protection Start Address Register
PROTRANGE 0x0885 1 Block Protection Range Address Register
Figure 5-1. Device Configuration (DEVICECNF) Register
31 27 26 20 19 18 16
Reserved TRST Reserved ENPROT Reserved
R-0 R-0 R-0 R/W-1 R-111
15 5 4 3 2 0
Reserved XRS Res VMAPS Reserved
R-0 R-P R-0 R-1 R-011
LEGEND: R/W = Read/Write; R = Read only; - n = value after reset
Table 5-16. DEVICECNF Register Field Descriptions
Bits Field Value Description
31-28 Reserved Reserved
27 TRST Read status of TRST signal. Reading this bit gives the current satus of the TRST signal.
0 No emulator is connected.
1 An emulator is connected.
26:20 Reserved
19 ENPROT Enable Write-Read Protection Mode Bit.
0 Disables write-read protection mode
1 Enables write-read protection as specified by the PROTSTART and PROTRANGE registers
18-6 Reserved Reserved
5 XRS Reset Input Signal Status. This is connected directly to the XRS input pin.
4 Reserved Reserved
3 VMAPS VMAP Configure Status. This indicates the status of VMAP.
2-0 Reserved Reserved
Peripheral Frames116 SPRUFB0C – September 2007 – Revised May 2009
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