Preliminary
Registers
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6.3.1.11 Audio Configuration of DMA Register (HDMI_WP_AUDIO_CFG2)
The audio configuration of DMA register is shown in
and described in
.
Figure 6-20. Audio Configuration of DMA Register (HDMI_WP_AUDIO_CFG2)
31
16 15
8
7
0
Reserved
DMA_TRANSFER
BLOCK_SIZE
R-0
R/W-10h
R/W-C0h
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 6-28. Audio Configuration of DMA Register (HDMI_WP_AUDIO_CFG2) Field Descriptions
Bit
Field
Description
31-16
Reserved
Reserved
15-8
DMA_TRANSFER
Use to control the dma request. When the number of OCP dma access is performed, the DMA request
signal is de-asserted (set to low) All dma access are performed on 32 bit in HDMI_WP_AUDIO_DATA
register Encoded value (from 0 to 255). The value 0 is invalid.
7-0
BLOCK_SIZE
Define the block size if audio sample are compressed default value is 192 to match the IEC 60958
standard.
6.3.1.12 Audio FIFO Control Register (HDMI_WP_AUDIO_CTRL)
The audio FIFO control register is shown in
and described in
.
Figure 6-21. Audio FIFO Control Register (HDMI_WP_AUDIO_CTRL)
31
30
29
26
25
24
WRAPPER_
CORE_REQ_
Reserved
NUMBER_OF_SAMPLE
ENABLE
ENABLE
R/W
R/W
R-0h
R-0h
23
16
NUMBER_OF_SAMPLE
R-0h
15
10
9
8
Reserved
DMA_OR_IRQ
THRESHOLD_
VALUE
R-0h
R/W
R/W-10h
7
0
THRESHOLD_VALUE
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 6-29. Audio FIFO Control Register (HDMI_WP_AUDIO_CTRL) Field Descriptions
Bit
Field
Value
Description
31
WRAPPER_ENABLE
This filed enable the audio wrapper. When disable the audio path is under reset
Register setting are not affected by the enable.
0
Wrapper is disabled
1
Wrapper is enabled
30
CORE_REQ_ENABLE
0
Enables the Audio data request generated by the core. This is used to start the audio
data transmission from the wrapper to the core. This must be enabled only after the
5th VSYNC is generated to ensure that the Audio and Video are in Sync.
29-26
Reserved
0
Reserved
25-16
NUMBER_OF_SAMPLE
0
Shows the number of valid sample (16 or 24 bits) in the FIFO (depends of the fifo
format setting)
15-10
Reserved
0
Reserved
732
High-Definition Multimedia Interface (HDMI)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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