TMS320F28375DPZP datasheet(40/226 Pages) TI

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(2)

High-Speed SPI-enabled GPIO mux option. This pin mux option is required when using the SPI in High-Speed Mode (HS_MODE = 1

in SPICCR). This mux option is still available when not using the SPI in High-Speed Mode (HS_MODE = 0 in SPICCR).

(3)

This pin has output impedance that can be as low as 22 Ω. This output could have fast edges and ringing depending on the system

PCB characteristics. If this is a concern, the user should take precautions such as adding a 39Ω (10% tolerance) series termination

resistor or implement some other termination scheme. It is also recommended that a system-level signal integrity analysis be

performed with the provided IBIS models. The termination is not required if this pin is used for input function.

7.3 Pins With Internal Pullup and Pulldown

Some pins on the device have internal pullups or pulldowns. Table 7-1 lists the pull direction and when it is

active. The pullups on GPIO pins are disabled by default and can be enabled through software. In order to avoid

any floating unbonded inputs, the Boot ROM will enable internal pullups on GPIO pins that are not bonded out in

a particular package. Other pins noted in Table 7-1 with pullups and pulldowns are always on and cannot be

disabled.

Table 7-1. Pins With Internal Pullup and Pulldown

RESET

( XRS = 0)

DEVICE BOOT

APPLICATION SOFTWARE

GPIOx

Pullup disabled

Pullup disabled(1)

Pullup enable is application-

defined

TRST

Pulldown active

TCK

Pullup active

TMS

Pullup active

TDI

Pullup active

XRS

Pullup active

VREGENZ

Pulldown active

ERRORSTS

Pulldown active

Other pins

No pullup or pulldown present

(1)

Pins not bonded out in a given package will have the internal pullups enabled by the Boot ROM.

TMS320F28379D, TMS320F28379D-Q1, TMS320F28378D, TMS320F28377D

TMS320F28377D-Q1, TMS320F28376D, TMS320F28375D, TMS320F28374D

SPRS880O – DECEMBER 2013 – REVISED FEBRUARY 2021

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Product Folder Links: TMS320F28379D TMS320F28379D-Q1 TMS320F28378D TMS320F28377D

TMS320F28377D-Q1 TMS320F28376D TMS320F28375D TMS320F28374D

TMS320F28375DPZP Datasheet(PDF) 40 Page - Texas Instruments

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