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TMS320F28375DPZP Datasheet(PDF) 40 Page - Texas Instruments |
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TMS320F28375DPZP Datasheet(HTML) 40 Page - Texas Instruments |
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40 / 222 page  40 TMS320F28379D, TMS320F28378D, TMS320F28377D TMS320F28376D, TMS320F28375D, TMS320F28374D SPRS880K – DECEMBER 2013 – REVISED NOVEMBER 2018 www.ti.com Submit Documentation Feedback Product Folder Links: TMS320F28379D TMS320F28378D TMS320F28377D TMS320F28376D TMS320F28375D TMS320F28374D Terminal Configuration and Functions Copyright © 2013–2018, Texas Instruments Incorporated Table 4-1. Signal Descriptions (continued) TERMINAL I/O/Z(1) DESCRIPTION NAME MUX POSITION ZWT BALL NO. PTP PIN NO. PZP PIN NO. SPECIAL FUNCTIONS ERRORSTS U19 92 – O Error status output. This pin has an internal pulldown. TEST PINS FLT1 W12 73 42 I/O Flash test pin 1. Reserved for TI. Must be left unconnected. FLT2 V13 74 43 I/O Flash test pin 2. Reserved for TI. Must be left unconnected. (1) Pins not bonded out in a given package will have the internal pullups enabled by the Boot ROM. (1) I = Input, O = Output, OD = Open Drain, Z = High Impedance (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. 4.3 Pins With Internal Pullup and Pulldown Some pins on the device have internal pullups or pulldowns. Table 4-2 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 4-2 with pullups and pulldowns are always on and cannot be disabled. Table 4-2. Pins With Internal Pullup and Pulldown PIN 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 |
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