Figure 4-6 Jtag Identification Register Configuration (Revision 0); Jtag Boundary Scan Register (Bsr) - Motorola DSP56305 User Manual

24-bit digital signal processor
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4.10
JTAG IDENTIFICATION (ID) REGISTER
The JTAG Identification (ID) register is a 32-bit, read-only through JTAG, factory
programmed register used to distinguish the component on a board according to the
IEEE 1149.1 standard. Figure 4-6 shows the JTAG ID register configuration.
31
Revision Number
0000

Figure 4-6 JTAG Identification Register Configuration (Revision 0)

The ID register has five parts:
1. Reserved bit 0, which is defined as 1 by the JTAG standard.
2. The manufacturer identity, in bits 11–1, which for Motorola is $E (00000001110).
3. The customer part number, in bits 27–12, which is divided into two parts:
a. The sequence number, in bits 21–12, which for the DSP56305 is $5
(0000000101)
b. The design center number, in bits 27–22, which for MSIL is $6 (000110)
4. The revision number, in bits 28–31, which for the DSP56305 Revision 0 is $0
(0000).
The JTAG ID register value for the DSP56305 Revision 0 is $0180501D.
4.11

JTAG BOUNDARY SCAN REGISTER (BSR)

The Boundary Scan Register (BSR) in the DSP56305 JTAG implementation contains bits
for all device signal and clock pins and associated control signals. All DSP56305
bidirectional pins have a corresponding register bit in the BSR for pin data, and are
controlled by an associated control bit in the BSR. The BSR is listed in Section 11. The
JTAG code listing is in Appendix C.
MOTOROLA
28
27
22
Customer Part
Number
000110
DSP56305 User's Manual
JTAG Identification (ID) Register
21
12
11
Sequence
Number
0000000101
Core Configuration
1
0
Manufacturer
1
Identity
00000001110
1
AA1413
4-25

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