PNX17XX Datasheet, PDF (498/832 Pages) NXP Semiconductors – Connected Media Processor

Philips Semiconductors
Volume 1 of 1
PNX17xx Series
Chapter 14: FGPI: Fast General Purpose Interface
Double buffer operation may be terminated by disabling the next buffer to which the
FGPI will switch to. This is done by clearing the associated
FGPI_CTL.CAPTURE_ENABLE_n bit.
start
active = buf1
buffer 1 full
ack1 & ack2
active = buf2
buf1full
!ack1 & ack2
ack buffer 1
buffer 2 full
buf1full
buf2full
OVERRUN
active = buf2
ack buffer 2
buffer 2 full
buffer 1 full
active = buf1
buf2full
ack1 &!ack2
Figure 4: Double Buffer Major States
2.12 Single Buffer Operation
Single buffer operation may be enabled by only setting the
FGPI_CTL.CAPTURE_ENABLE_1 bit. When buffer 1 is full, sample capture will stop
until the BUF1FULL_ACK is received.
PNX17XX_SER_1
Preliminary data sheet
Rev. 1 — 17 March 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
14-11