System and Peripheral Control Registers
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SPNU563A–March 2018
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Architecture
2.5.1.49 Device Identification Register (DEVID)
The DEVID is a read-only register. It contains device-specific information that is hard-coded during device
manufacture. For the initial silicon version, the device identification code value is 8044 AD05h. This
register is shown in Figure 2-56 and described in Table 2-68.
Figure 2-56. Device Identification Register (DEVID) (offset = F0h)
31 30 17 16
CP15 UNIQUE ID TECH
R-K R-K R-K
15 13 12 11 10 9 8
TECH I/O VOLTAGE PERIPHERAL
PARITY
FLASH ECC RAM ECC
R-K R-K R-K R-K R-K
7 3 2 0
VERSION PLATFORM ID
R-K R-K
LEGEND: R = Read only; K =Constant value; -n = value after reset
Table 2-68. Device Identification Register (DEVID) Field Descriptions
Bit Field Value Description
31 CP15 CP15 CPU. This bit indicates whether the CPU has a coprocessor 15 (CP15).
0 The CPU has no CP15 present.
1 The CPU has a CP15 present. The CPU ID can be read using the CP15 C0,C0,0 register.
30-17 UNIQUE ID 0-3FFFh Device ID. The device ID is unique by device configuration.
16-13 TECH These bits define the process technology by which the device was manufactured.
0 Device manufactured in the C05 process technology.
1h Device manufactured in the F05 process technology.
2h Device manufactured in the C035 process technology.
3h Device manufactured in the F035 process technology.
4h Device manufactured in the C021 process technology.
5h Device manufactured in the F021 process technology.
6h-7h Reserved
12 I/O VOLTAGE Input/output voltage. This bit defines the I/O voltage of the device.
0 The I/O voltage is 3.3 V.
1 The I/O voltage is 5 V.
11 PERIPHERAL
PARITY
Peripheral parity. This bit indicates whether or not peripheral memory parity is present.
0 The peripheral memories have no parity.
1 The peripheral memories have parity.
10-9 FLASH ECC These bits indicate which parity is present for the program memory.
0 No memory protection is present.
1h The program memory (Flash) has single-bit parity.
2h The program memory (Flash) has ECC.
3h This combination is reserved.
8 RAM ECC RAM ECC. This bit indicates whether or not RAM memory ECC is present.
0 The RAM memories do not have ECC.
1 The RAM memories have ECC.
7-3 VERSION 0-1Fh Version. These bits provide the revision of the device.
2-0 PLATFORM ID 5h The device is part of the TMS570Px family. The TMS570Px ID is always 5h.
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