JTAG Support
69
IDcode Register The C-3e NP implements a standard 32bit JTAG identification register. Table 30 lists the
value of the code for full identification and its sub-components.
Table 30 JTAG Identification Code and Its Sub-components
FIELD NAME
Version
WIDTH
BIT POSITIONS
BINARY VALUE
4
31-28
27-12
11-1
0
0000
Part Number
Manufacturer Identity
LSB
16
11
1
0000_0000_0010_0001
001_1001_0110
1
The concatenated 32bit value is hexidecimal 0002132d.
JTAG Instruction Register The C-3e NP contains a 4bit instruction register. Table 31 lists the instructions that are
supported.
Table 31 Instruction Register Instructions
INSTRUCTION MNEMONIC SELECTED REGISTER
INSTRUCTION OPCODE
Extest
Boundary Scan
0000
Idcode
Identification Register 0001
Sample/Preload
Highz
Boundary Scan
Bypass Register
Bypass Register
Bypass Register
Bypass Register
Bypass Register
Bypass Register
Bypass Register
Bypass Register
Bypass Register
Bypass Register
Bypass Register
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
Clamp
Bypass
Reserved*
Reserved*
Bypass
Bypass
Bypass
Bypass
Bypass
Bypass
03
FREESCALE [ Freescale ]
