TMP32C6411ZLZ datasheet(35/119 Pages) TI

35 / 119 page

TMS320C6411

FIXEDPOINT DIGITAL SIGNAL PROCESSOR

SPRS196H − MARCH 2002 − REVISED JULY 2004

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

DEVICE CONFIGURATIONS (CONTINUED)

multiplexed pins

Multiplexed pins are pins that are shared by more than one peripheral and are internally multiplexed. Some of

these pins are configured by software, and the others are configured by external pullup/pulldown resistors only

at reset. Those muxed pins that are configured by software can be programmed to switch functionalities at any

time. Those muxed pins that are configured by external pullup/pulldown resistors are mutually exclusive; only

one peripheral has primary control of the function of these pins after reset. Table 22 identifies the multiplexed

pins on the C6411 device; shows the default (primary) function and the default settings after reset; and describes

the pins, registers, etc. necessary to configure specific multiplexed functions.

debugging considerations

It is recommended that external connections be provided to device configuration pins, including CLKMODE0,

LEND, BOOTMODE[1:0], ECLKIN_SEL[1:0]. EEAI, HD5/AD5, and PCI_EN. Although internal pullup/pulldown

resistors exist on these pins, providing external connectivity adds convenience to the user in debugging and

flexibility in switching operating modes.

Internal pullup/pulldown resistors also exist on specified reserved (RSV) pins. Do not oppose the internal

pullup/pulldown resistors, unless otherwised noted, on these RSV pins.

For the internal pullup/pulldown resistors for all device pins, see the terminal functions table.

TMP32C6411ZLZ Datasheet(PDF) 35 Page - Texas Instruments