NXP Semiconductors PXN2020, Reference Manual, Page: 195 / 1376

System Integration Unit (SIU)
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 8-13
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: SI 0x0004 Access: User read-only
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R PARTNUM
W
Reset 0 1 0 1 0 1 1 0 0 1 1 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
Reset
1
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.
0 * * * * * 0 0 * * * * * * * *
Figure 8-2. MCU ID Register (SIU_MIDR)
Table 8-3. SIU_MIDR Field Descriptions
Field Description
PARTNUM MCU Part Number. Read-only, mask-programmed part identification number of the MCU. Reads
0x5668 for the PXN20.
CSP 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.
PKG 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.
MASKNUM_MAJOR 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.
MASKNUM_MINOR 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.