AM3703CUS datasheet(264/280 Pages) TI

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etk_clk

etk_ctl

etk_d[15:0]

TPIU1

TPIU2

TPIU3

TPIU4

TPIU5

TPIU4

SWPS038-106

AM3715, AM3703

SPRS616F

– JUNE 2010 – REVISED AUGUST 2011

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6.6.9

Test Interfaces

6.6.9.1

Embedded Trace Macro Interface (ETM)

Table 6-137 assumes testing over the recommended operating conditions and electrical characteristic

conditions below (see Figure 6-79).

Table 6-136. ETM Timing Conditions

—Transmit Mode

TIMING CONDITION PARAMETER

VALUE

UNIT

MIN

MAX

Output Condition

CLOAD

Output load capacitance(1)

(1) Buffer strength configuration: LB0 = 1.

Table 6-137. ETM Switching Characteristics

—Transmit Mode(4)

NO.

PARAMETER

OPP100

OPP50

UNIT

MIN

MAX

MIN

MAX

TPIU1

1 / tc(clk)

Frequency(3), output clock etk_clk

166

MHz

TPIU2

tw(clkH)

Pulse duration, output clock etk_clk high

0.5P(1)

TPIU3

tw(clkL)

Pulse duration, output clock etk_clk low

0.5P(1)

tdc(clk)

Duty cycle error, output clock etk_clk

–301

301

–301

301

tJ(clk)

Jitter standard deviation(2), output clock etk_clk

tR(clk)

Rise time, output clock etk_clk

1.2

tF(clk)

Fall time, output clock etk_clk

1.2

TPIU4

td(clk-ctl)

Delay time, output clock etk_clk low/high to output

0.839

control etk_ctl transition

TPIU5

td(clkH-d)

Delay time, output clock etk_clk low/high to output

0.839

data etk_d[15:0] transition

tR(d/ctl)

Rise time, output data etk_d[15:0] and output control

1.2

etk_ctl

tF(d/ctl)

Fall time, output data etk_d[15:0] and output control

1.2

etk_ctl

(1) P = etk_clk period in ns

(2) The jitter probability density can be approximated by a Gaussian function.

(3) Related with the etm_clk maximum frequency.

(4) See Section 4.3.4, Processor Clocks.

Figure 6-79. ETM

—Transmit Mode

264

Timing Requirements and Switching Characteristics

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AM3703CUS Datasheet(PDF) 264 Page - Texas Instruments

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