MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
24-6
Freescale Semiconductor
24.3.1.4
Boundary Scan Register
The boundary scan register is connected between TDI and TDO when the EXTEST, SAMPLE or
SAMPLE/PRELOAD instructions are active. It is used to capture input pin data, force fixed values on
output pins, and select a logic value and direction for bidirectional pins. Each bit of the boundary scan
register represents a separate boundary scan register cell, as described in the IEEE 1149.1-2001 standard
and discussed in
Section 24.4.5, “Boundary Scan
.” The size of the boundary scan register is 464 bits for
the MPC5554, and 392 bits for the MPC5553.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
PRN DC
PIN
W
Reset
MPC5553
0
0
0
0
1
0
0
0
0
0
0
0
0
1
0
1
Reset
MPC5554
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
PIN
MIC
1
W
Reset
MPC5553
0
0
1
1
0
0
0
0
0
0
0
1
1
1
0
1
Reset
MPC5554
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
1
Figure 24-3. Device Identification Register
Table 24-2. Device Identification Register Field Descriptions
Bits
Name
Description
0–3
PRN
Part revision number. Contains the revision number of the device. This field changes with
each revision of the device or module.
4–9
DC
Design center. Indicates the Freescale design center. For both the MPC5554 and
MPC5553, this value is 0x20.
10–19
PIN
Part identification number. Contains the part number of the device. For the MPC5554, this
value is 0x0, for the MPC5553 this value is 0x53.
20–30
MIC
Manufacturer identity code. Contains the reduced Joint Electron Device Engineering
Council (JEDEC) ID for Freescale, 0xE.
31
—
IDCODE register ID. Identifies this register as the device identification register and not the
bypass register. Always set to 1.
Summary of Contents for MPC5553
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