Accessing eonce registers through jtag -9, A) eonce register write operation through jtag – Freescale Semiconductor StarCore SC140 User Manual
Page 119
Overview of the Combined JTAG and EOnCE Interface
SC140 DSP Core Reference Manual
4-9
Figure 4-5. Accessing EOnCE registers through JTAG
(A) EOnCE register write operation through JTAG
0
7
TDO
TDI
(don’t care bits)
(relevant bits)
(B) EOnCE register read (capture) operation through JTAG
0
7
TDO
TDI
(bits captured as zero)
(relevant bits)
0
23
EOnCE register
EOnCE register
24 zeros
internal shift register
internal shift register