PNX1502E Datasheet, PDF (547/819 Pages) NXP Semiconductors – Connected Media Processor

Philips Semiconductors
Volume 1 of 1
PNX15xx Series
Chapter 17: SPDIF Output
Table 5: SPDIF Output Module Register Summary …Continued
Offset
Name
Description
0x10 9010
SPDO_BASE2
Base address of buffer2
0x10 9014
SPDO_SIZE
Size of the buffers
0x10 9018—9FF0
Reserved
0x10 9FF4
SPDO_PWR_DWN
Powerdown
0x10 9FFC
SPDO_MODULE_ID
Module ID
Remark: The clock frequency emitted by the DDs output can be found in Chapter 5
The Clock Module.
5.2 Register Table
Table 6: SPDO Registers
Bit Symbol
Acces
s
Value
Offset 0x10 9000
SPDO_STATUS
31:5 Reserved
0
BUF1_EMPTY
R
0
1
BUF2_EMPTY
R
0
2
HBE (bandwidth error) R
0
3
UNDERRUN
R
0
4
BUF1_ACTIVE
R
1
Offset 0x10 9004
31 RESET
SPDO_CTL
W
0
30 TRANS_ENABLE
R/W 0
Description
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
This flag gets set if DMA buffer 1 has been emptied by the SPDO
hardware. The flag can be cleared only by a software write to
ACK_BUF1.
This flag gets set if DMA buffer 2 has been emptied by the SPDO
hardware. The flag can be cleared only by a software write to
ACK_BUF2.
Bandwidth Error. This flag gets set if the internal buffers in SPDO
were emptied before new memory data was brought in. This flag
can be cleared only by a software write to ACK_HBE.
This flag gets set if both DMA buffers were emptied before a new full
buffer was assigned by software. The hardware has performed a
normal buffer switch over and is emitting old data. It can only be
cleared by software write to ACK_UDR.
This flag gets set if the hardware is currently emitting DMA buffer 1
data, and is negated when emitting DMA buffer 2 data.
1 =Software Reset. Immediately resets the SPDO block. This
should be used with extreme caution. Any ongoing transmission will
be interrupted, and receivers may be left in a strange state.
1 =Enables transmission as per the selected mode.
0 =Transmission Disabled. Stops any ongoing transmission after
completing any actions related to the current data descriptor word.
12NC 9397 750 14321
Product data sheet
Rev. 2 — 1 December 2004
© Koninklijke Philips Electronics N.V. 2002-2003-2004. All rights reserved.
17-9