Akura AV26720-HD2 Especificaciones descargar pdf (Pagina 40)

Spectrum Digital, Inc

2-30

TMS320C54XX Evaluation Module Technical Reference

2.10.8 JP7, SYSCLK Option

Jumper JP7 allows the selection of either the rising edge or falling edge of CLKOUT to

generate READY for UART operations. As processor frequencies increase it will be

necessary to pipeline the READY signal. This jumper provides for these requirements.

The table below shows the two positions and their functions:

2.10.9 JP8, AD50 Reference Voltage

The AD50 AIC can supply an internal reference voltage, however for compatibility with

previous versions of the C54xx with the AD50, an external voltage reference is

supplied. Jumper JP8 allows the selection of using the external reference or internal

reference. When position 1-2 is selected the external reference is used. If the 2-3

position is selected the internal reference is used. These selections are shown in the

table below.

Table 23: JP7, SYSCLK Option

Position Function

1-2 Use Inverted CLKOUT for U20 GAL Clock

2-3 Use CLKOUT for U20 GAL Clock

Table 24: JP8, AD50 Reference Voltage

Position Function

1-2 External reference

2-3 Internal reference

1 2 ... 35 36 37 38 39 40 41 42 43 44 45

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Akura AV26720-HD2 Especificaciones Pagina 40