SPRUG18 datasheet(186/214 Pages) TI

186 / 214 page

PLH

PHL

TMS320C6474

SPRS552H

– OCTOBER 2008 – REVISED APRIL 2011

www.ti.com

7.20.2 Trace

The C6474 device supports Trace. Trace is a debug technology that provides a detailed, historical

account of application code execution, timing, and data accesses. Trace collects, compresses, and

exports debug information for analysis. Trace works in real-time and does not impact the execution of the

system.

For more information on board design guidelines for Trace Advanced Emulation, see the 60-Pin Emulation

Header Technical Reference (literature number SPRU655).

Table 7-84. Timing Requirements for Trace

(see Figure 7-45)

NO.

PARAMETER

MIN

MAX

UNITS

tw(EMUnH)

Pulse duration, EMUn high

3 - 0.6(1)

tw(EMUnH) 90%

Pulse duration, EMUn high detected at 90% VOH

1.5

tw(TCKH)

Pulse width time TCK high

tw(TCKL)

Pulse width time TCK low

tw(EMUnL)

Pulse duration, EMUn low

3 - 0.6(1)

tw(EMUnL) 10%

Pulse duration, EMUn low detected at 10% VOH

1.5

tsko(EMUn)

Output Skew time, time delay difference between EMU pins configured as

-500

500

trace.

tskp(EMUn)

Pulse Skew, magnitude of time difference between high-to-low (TPHL) and

600(1)

low-to-high (TPLH) propagation delays.

(1)

This parameter applies to the maximum trace export frequency operating in a 40/60 duty cycle.

Figure 7-45. Trace Timing

186

Peripheral Information and Electrical Specifications

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