pnx1700 NXP Semiconductors, pnx1700 Datasheet - Page 527
pnx1700
Manufacturer Part Number
pnx1700
Description
Connected Media Processor
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1700.pdf
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Philips Semiconductors
Volume 1 of 1
Table 9: Audio Output Port Registers
PNX17XX_SER_1
Preliminary data sheet
Bit
3
2
1
0
Offset 0x11 0004
31
30
29:28
27
26:25
24
23
22
Symbol
UNDERRUN
HBE
BUF2_EMPTY
BUF1_EMPTY
RESET
TRANS_ENABLE
TRANS_MODE
SIGN_CONVERT
Unused
CC1_EN
CC2_EN
WS_PULSE
AO_CTL—DTL Clock Domain
Acces
s
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
…Continued
0
0
0
0
0
0
00
0
-
0
0
0
Value
Rev. 1 — 17 March 2006
Description
An UNDERRUN error has occurred i.e., the system controller/
software failed to provide a full DMA buffer in memory in time and
no new samples were transmitted. The last sample or sample pairs
were sent to the D/A converter.
If UDR_INTEN is also ‘1’, an interrupt request is pending. The
UNDERRUN flag can ONLY be cleared by writing an ‘1’ to
ACK_UDR.
Bandwidth Error indicates that no new data was transmitted due to
an inability of the DMA interface adapter to provide the required
data in time for the start of a new frame. The last data set is
repeated. If HBE_INTEN is an ‘1’, then an interrupt is also sent to
the system. The HBE flag stays set until an ‘1’ is written to
ACK_HBE.
1= buffer 2 is empty.
If BUF2_INTEN is also ‘1’, an interrupt request is asserted.
BUF2_EMPTY is cleared by writing a ‘1’ to ACK2, at which point the
Audio Out hardware will assume that AO_BASE2 and AO_SIZE
describe a new full DMA buffer in memory.
1= buffer 1 is empty.
If BUF1_INTEN is also ‘1’, an interrupt request is asserted.
BUF1_EMPTY is cleared by writing a ‘1’ to ACK1, at which point the
Audio Out hardware will assume that AO_BASE1 and AO_SIZE
describe a new full DMA buffer in memory.
Resets the Audio Out logic. See
description of software reset.
Transmission Enable flag
0 = Audio Out is inactive.
1 = Audio Out transmits samples and acts as DMA master to read
samples from local memory.
Do not change any of the framing configurations while transmission
is enabled.
00 = Mono, 32 bits/sample. Left and right data sent to each active
output are the same.
01 = Stereo, 32 bits/sample
10 = Mono, 16 bits/sample. Left and right data are the same.
11 = Stereo, 16 bits/sample
0 =Leave MSB unchanged.
1 = Invert MSB (not applied to codec control fields).
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read
0 = CC1 emission disabled.
1 = CC1 emission enabled.
0 = CC2 emission disabled.
1 = CC2 emission enabled.
0 = Emit 50% WS.
1 = Emit single SCK cycle WS.
Section 3.2 on page 15-14
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX17xx Series
Chapter 15: Audio Output
for a
15-16
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