Analog Devices ADSP-21369 Manual de usuario descargar pdf (Pagina 55)

ADSP-21369 EZ-KIT Lite Evaluation System Manual 2-17

EZ-KIT Lite Hardware Reference

Board Reset Push Button (SW12)

The RESET push button (SW12) resets all of the ICs on the board. The only

exception is the USB interface chip (

U4). The chip is not being reset when

the push button is pressed after the USB cable has been plugged in and

communication correctly initialized with the PC. After USB communica-

tion has been initialized, the only way to reset the USB is by powering

down the board.

Jumpers

Figure 2-7 shows the locations and default settings of the EZ-KIT Lite

jumpers.

VCO Select Jumper (JP1)

The voltage controlled oscillator (VCO) select jumper (JP1) configures

the frequency selection of the on-board external PLL (

U39). When JP1 is

installed, the VCO output frequency is multiplied by a factor of 1.0. Con-

versely, when uninstalled, the VCO output frequency is multiplied by a

factor of 0.5 or divided in half. The jumper settings are shown in

Table 2-10.

PB3 SW10 DAI19

PB4 SW9 DAI20

Table 2-9. Push Button Connections (Cont’d)

Push Button Label Push Button Reference Designator Processor Pin

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 92 93

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Analog Devices ADSP-21369 Manual de usuario Pagina 55