PXN20RM Datasheet, PDF (195/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

System Integration Unit (SIU)
8.3.2 Register Descriptions
This section lists the DSPI registers in address order and describes the registers and their bit fields.
8.3.2.1 MCU ID Register (SIU_MIDR)
The SIU_MIDR contains the part identification number, package type, and mask revision number specific
to the device. The part number is a read-only field mask-programmed with the device part number. It is
not changed for bug fixes or process changes. The package type is a read-only field that reflects the device
package type. The mask number is a read-only field mask-programmed with the device’s specific mask
revision level.
Offset: SIU_BASE + 0x0004
Access: User read-only
0
R
W
Reset 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PARTNUM
1
0
1
0
1
1
0
0
11 0
1
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R CSP
PKG
0
0
MASKNUM_MAJOR
MASKNUM_MINOR
W
Reset¹ 0
*
*
*
*
*
0
0
*
**
*
*
*
*
*
Figure 8-2. MCU ID Register (SIU_MIDR)
1 _{PKG default value reflects the device package type as defined in Table 8-3.}
MASKNUM_MAJOR default value is 0x0 for the device’s initial mask set and changes for each major mask set revision.
MASKNUM_MINOR default value is 0x0 for the device’s initial mask set and changes for each minor mask set revision.
Field
PARTNUM
CSP
PKG
MASKNUM_MAJOR
MASKNUM_MINOR
Table 8-3. SIU_MIDR Field Descriptions
Description
MCU Part Number. Read-only, mask-programmed part identification number of the MCU. Reads
0x5668 for the PXN20.
Chip Scale Package. The CSP bit indicates whether the die is mounted in a chip scale package.
0 Not a chip scale package.
1 Chip scale package.
Package Configuration. These values set the pin package used for each PXN20 device.
0b10000 208-pin MAPBGA
0b00000 256-pin MAPBGA
All other combinations are reserved.
Major Mask Revision Number. Read-only, mask-programmed mask number of the MCU. Reads
0x0 for the device’s initial mask set and changes for each major mask set revision.
Minor Mask Revision Number. Read-only, mask-programmed mask number of the MCU. Reads
0x0 for the device’s initial mask set and changes for each minor mask set.
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
8-13