PRODUCTPREVIEW
RM46L852
SPNS185 – SEPTEMBER 2012
6.3
Device Identification
6.3.1
Device Identification Code Register
The device identification code register identifies several aspects of the device including the silicon version.
The details of the device identification code register are shown in
. The device identification code
register value for this device is:
•
Rev 0 = 0x8046AD05
Figure 6-2. Device ID Bit Allocation Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CP-15
UNIQUE ID
TECH
R-1
R-00000000100011
R-0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
TECH
I/O
PERIPH
FLASH ECC
RAM
VERSION
1
0
1
VOLT
PARITY
ECC
AGE
R-101
R-0
R-1
R-10
R-1
R-00000
R-1
R-0
R-1
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 6-1. Device ID Bit Allocation Register Field Descriptions
Bit
Field
Value
Description
31
CP15
Indicates the presence of coprocessor 15
1
CP15 present
30-17
UNIQUE ID
100011
Unique device identification number
This bitfield holds a unique number for a dedicated device configuration (die).
16-13
TECH
Process technology on which the device is manufactured.
0101
F021
12
I/O VOLTAGE
I/O voltage of the device.
0
I/O are 3.3v
11
PERIPHERAL
1
Peripheral Parity
PARITY
Parity on peripheral memories
10-9
FLASH ECC
Flash ECC
10
Program memory with ECC
8
RAM ECC
Indicates if RAM memory ECC is present.
1
ECC implemented
7-3
REVISION
Revision of the Device.
2-0
101
The platform family ID is always 0b101
6.3.2
Die Identification Registers
The four die ID registers at addresses 0xFFFFE1F0, 0xFFFFE1F4, 0xFFFFE1F8 and FFFFE1FC form a
128-bit dieid with the information as shown in Table
Table 6-2. Die-ID Registers
Item
# of Bits
Bit Location
X Coord. on Wafer
8
7..0
Y Coord. on Wafer
8
15..8
Wafer #
6
21..16
Lot #
24
45..22
Reserved
82
127..46
166
Device and Documentation Support
Copyright © 2012, Texas Instruments Incorporated
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