JTAG and Debug Logic Power Supplies

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2022-09-15
Revision
2.3 English

The CoreSight debug system is spread across three power domains. Although all power-domains should be turned on, the basic JTAG functions work as long as the low-power domain (LPD) and PL power domain (PLPD) are active. The PL TAP controller is required to run a boundary scan (BSCAN). The DAP controller has components in the full-power domain (FPD) for APU debug. See Table: JTAG and CoreSight Split Between Power Domains.

Table 39-12:      JTAG and CoreSight Split Between Power Domains

LPD

FPD

PLPD

PS TAP controller

DAP controller

Cortex®-A53 CTI, CTM, and ETM

Debug APB (path to the Cortex-A53 debug APB)

ATB and Funnel 0

All CTI/CTM except the Cortex-A53 CTI/CTM.

Debug APB except branch to the Cortex-A53.

All of trace related components:

Cortex-A53 ETM

STM

ATB and Funnels 1 and 2

TMC

TPIU

PL TAP controller