AM261...ZNC datasheet(183/218 Pages) TI2

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6.11.5.17 Universal Serial Bus (USB)

The USB 2.0 subsystem is compliant with the Universal Serial Bus (USB) Specification, revision 2.0. Refer to the

specification for timing details.

For more details about features and additional description information on the device Universal Serial Bus

Subsystem (USB), see the Universal Serial Bus section in the device TRM

6.11.6 Emulation and Debug

For more details about features and additional description information on the device Trace and JTAG interfaces,

see the On-Chip Debug section in the device TRM.

6.11.6.1 JTAG

The acronym stands for the Joint Test Action Group, the committee of engineers who defined the boundary-

scan standard (IEEE std 1149.1). For more details about features and additional description information on the

device JTAG interface, see the corresponding subsections within the device TRM.

6.11.6.1.1 JTAG Timing Conditions

PARAMETER

MIN

MAX

UNIT

INPUT CONDITIONS

SRI

Input Slew Rate

0.5

2.00

V/ns

OUTPUT CONDITIONS

Output Load Capacitance

6.11.6.1.2 JTAG Timing Requirements

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

tc(TCK)

Cycle time, TCK

tw(TCKH)

Pulse width, TCK high

tw(TCKL)

Pulse width, TCK low

tsu(TDI-TCKH)

Input setup time, TDI valid to TCK high

tsu(TMS-TCKH)

Input setup time, TMS valid to TCK high

th(TCK-TDI)

Input hold time, TDI valid from TCK high

15.9

th(TCK-TMS)

Input hold time, TMS valid from TCK high

15.9

6.11.6.1.3 JTAG Switching Characteristics

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

td(TCKL-TDOI)

Delay time, TCK low to TDO invalid

–0.067005

td(TCKL-TDOV)

Delay time, TCK low to TDO valid

11.89594

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AM2612, AM2611, AM2611-Q1, AM2612-Q1

SPRSPA7C – SEPTEMBER 2024 – REVISED JULY 2025

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