The Multichannel Frame - Analog Devices Blackfin ADSP-BF537 Hardware Reference Manual

Hide thumbs Also See for Blackfin ADSP-BF537:

Table of Contents

Description of Operation

signal is used as a transmit data valid signal which is active during

transmission of an enabled word. The SPORT's data transmit pin is

three-stated when the time slot is not active, and the

output-enabled signal for the data transmit pin. The SPORT drives

multichannel mode whether or not

channel mode still obeys the

signal will be active low—a low signal on the

Once the initial

signals are ignored by the SPORT until the complete frame has been

transferred.

This is acceptable, and the frame sync is not ignored as long as the delayed

channel 0 starting point falls outside the complete frame.

In multichannel mode, the

reference, after which the word transfers are performed continuously with

syncs are always data independent.

The Multichannel Frame

A multichannel frame contains more than one channel, as specified by the

window size and window offset. A complete multichannel frame consists

of 1 – 1024 channels, starting with channel 0. The particular channels of

the multichannel frame that are selected for the SPORT are a combination

of the window offset, the window size, and the multichannel select regis-

is received, and a frame transfer has started, all other

may occur during the last channels of a previous frame.

signal is used for the block or frame start

signals required. Therefore, internally generated frame

ADSP-BF537 Blackfin Processor Hardware Reference

is cleared. The

is set, the transmit data valid

pin indicates an active

signal serves as an

pin in multi-