AM6421 datasheet(205/237 Pages) TI

205 / 237 page

Table 7-120. UART Timing Requirements (continued)

see Figure 7-108

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

tw(CTS)

Pulse width, receive start bit, high or low

0.95U

(1)

U = UART baud time in ns = 1/programmed baud rate.

Table 7-121. UART Switching Characteristics

see Figure 7-108

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

f(baud)

Programmable baud rate

15 pF

TDB

Mbps

30 pF

0.115

Mbps

td(CTS-TX)

Delay time, CTS bit to transmit data

tw(TX)

Pulse width, transmit data bit, high or low

U - 2.2

(1)

U + 2.2

(1)

tw(RTS)

Pulse width, transmit start bit, high or low

U - 2.2

(1)

U = UART baud time in ns = 1/programmed baud rate.

Figure 7-108. UART Timing Requirements and Switching Characteristics

For more information, see Universal Asynchronous Receiver/Transmitter (UART) section in Peripherals chapter

in the device TRM.

7.10.5.19 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.

The USB 3.1 GEN1 subsystem is compliant with the Universal Serial Bus (USB) 3.1 Specification, revision 1.0.

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 corresponding sections within Section 6.3, Signal Descriptions and Section 8,

Detailed Description.

7.10.6 Emulation and Debug

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

see the corresponding sections within Section 6.3, Signal Descriptions and Section 8, Detailed Description.

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SPRSP56 – JANUARY 2021

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