
Philips Semiconductors
PNX15xx Series
Volume 1 of 1
Chapter 13: FGPO: Fast General Purpose Output
PNX15XX_SER_3
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 3 — 17 March 2006
13-16
20:19
BUF_START /
MSG_STOP
R/W
00
In Record Mode:
Selects the buffer sync output on fgpo_stop at the start of a new
buffer:
00 = a one clock positive pulse concurrently with the rst data
sample of each buffer output.
01 = a one clock positive pulse one clock before the rst data
sample of each buffer output.
10 = a positive pulse asserted when any buffer is active, negated
while waiting for a buffer sync.
11 = a positive pulse asserted when data from buffer 2 is valid.
In Message Mode:
Selects message stop output on fgpo_stop at the end of a
message:
00 = a one clock positive pulse concurrently with the last data
sample for each message
01 = a positive pulse asserted when message data is valid.
10 = same as 00 above
11 = same as 01 above
18
Reserved
R
0
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
17:16
REC_START /
MSG_START
R/W
00
Selects record/message start output on fgpo_start at the beginning
of a record/message:
00 = a one clock positive pulse concurrently with the rst data
sample of each record/message output.
01 = a one clock positive pulse one clock before the rst data
sample of each record/message output.
10 = a positive pulse asserted as long as valid data is output,
negated while waiting for record/message sync event on
fgpo_rec_sync.
11 = same as 00 above.
15
Reserved
R
0
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
Table 3: Fast general purpose output (FGPO) …Continued
Bit
Symbol
Acces
s
Value
Description