Freescale Semiconductor MPC5553 - Page 1054

MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor 25-15
25.6.2.3 Nexus Device ID Register (DID)
The NPC device identification register, shown in Figure 25-3, allows the part revision number, design
center, part identification number, and manufacturer identity code of the part to be determined through the
auxiliary output port.
3210
R Previous Instruction Opcode
W Instruction Opcode
Reset: BYPASS Instruction Opcode (0xF)
Figure 25-2. 4-Bit Instruction Register
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R PRN DC PIN
W
Reset for
MPC5553
0 0 0 0 1 0 000000010 1
Reset for
MPC5554
0 0 0 1 1 0 000000000 0
Reg Index 0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RPIN MIC 1
W
Reset for
MPC5553
0 0 1 1 0 0 000001110 1
Reset for
MPC5554
0 0 0 0 0 0 000001110 1
Reg Index 0
Figure 25-3. Nexus Device ID Register (DID)
Table 25-10. DID Register Field Descriptions
Bits Name Description
31–28 PRN Part revision number. Contains the revision number of the part. This field changes with
each revision of the device or module.
27–22 DC Design center. Indicates the Freescale design center. For both the MPC5554 and
MPC5553, this value is 0x20.
21–12 PIN Part identification number. Contains the part number of the device. The PIN for the
MPC5553 is 0x53, for the MPC5554 it is 0x0.