PNX17XX Datasheet, PDF (507/832 Pages) NXP Semiconductors – Connected Media Processor

Philips Semiconductors
Volume 1 of 1
PNX17xx Series
Chapter 14: FGPI: Fast General Purpose Interface
Table 3: Fast general purpose INput (FGPI) …Continued
Bit Symbol
Acces
s
Value
Description
3:2 REC_START /
MSG_START
R/W 00
Encodes function of fgpi_start / fgpi_rec_start pin
Record Mode (fgpi_rec_start):
00 = Start record on rising edge on fgpi_rec_start
01 = Start record on falling edge on fgpi_rec_start
10 = No record sync. Switch to next record if current buffer is full.
Start first record immediately after enable.
11 = same as 10 above
Message Mode (fgpi_start):
00 = Start message on rising edge of fgpi_start
01 = Start message on falling edge of fgpi_start
10 = same as 00 above.
1
TSTAMP_SELECT
R/W 0
11 = same as 01 above.
1 = Write Timestamp before record/message data. Timestamp is a
4-byte time-of-arrival for fgpi_rec_start / fgpi_start event. If this bit
and bit-0 below (VAR_LENGTH) are both set the Timestamp is
written before the length.
0
VAR_LENGTH
R/W 0
Note: The length of the Timestamp (4 bytes) IS NOT included in the
record/message size in FGPI_SIZE register but IS included in the
stride (FGPI_STRIDE register).
1 = The length of each record/message (in samples) is written
before record/message data. Var_length is a 4-byte count. If this bit
and bit-1 above (TSTAMP_SELECT) are both set the Timestamp is
written before the length.
Offset 0x07,0004
31:2 BASE1
1:0 Reserved
Offset 0x07,0008
31:2 BASE2
1:0 Reserved
FGPI_BASE1
R/W 0
R
0
FGPI_BASE2
R/W 0
R
0
Note: The length of var_length (4 bytes) IS NOT included in the
record/message size in FGPI_SIZE register but IS included in the
stride (FGPI_STRIDE register).
32-bit word aligned address pointing to Buffer 1 base.
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
32-bit word aligned address pointing to Buffer 2 base.
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
PNX17XX_SER_1
Preliminary data sheet
Rev. 1 — 17 March 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
14-20