UG-707
ADV8005 Hardware Reference Manual
SCLK pin) edges or cycles per channel are valid. The
will adapt to 32- or 64-bit modes automatically, and the current mode can be
for timing diagrams on I2S streams input to the
is configured to receive a direct AES3 stream, the stream it receives should have IEC60958-like subframes (refer to
with the stream formatted as follows:
•
Data should be aligned as shown in
•
Preamble left out as shown in
•
Parity bit is replaced by the block start flag. The
automatically computes the parity bit.
The channel status data collected from the audio stream input to the AUD_IN[0] pin is used in the Audio Sample packets sent by the
to the downstream sink. The channel status data can alternately be programmed by setting the
is set
allows the programming of the audio sampling frequency used for the channel status bits while all other
channel status data is extracted from the audio stream input to I2S0. The sampling frequency is set via the
field.
Note:
All four stereo channels (AUD_IN[3:0]) are enabled by setting
to 0x7. If one stereo channel only
is needed, the I2S audio stream data must be input to AUD_IN[0]. The
control fields must be set to 1.
is set to 1, the audio sampling frequency programmed via I2S_SF is used for the determination of the pixel
repetition factor (refer to Section
for more details).
audioif_sf[2:0]
, TX2 Main Map,
Address 0xF474[4:2]
This signal is used to specify the Audio Sampling Frequency in the Audio InfoFrame.
Function
audioif_sf[2:0]
Description
000 (default)
Case 1: Not DSD audio or Case 2: DSD audio (AUDIO_INPUT_SEL = 0b010)
001
64 x 32 kHz
010
64 x 44.1 kHz
011
64 x 48 kHz
100
64 x 88.2 kHz
101
64 x 96 kHz
110
64 x 176.4 kHz
111
64 x 192 kHz
audioif_cc[2:0]
, TX2 Main Map,
Address 0xF473[2:0]
This signal is used to set the Audio Channel Count (Audio InfoFrame).
Function
audioif_cc[2:0]
Description
000 (default)
Refer to Stream Header
001
2 channels
010
3 channels
011
4 channels
100
5 channels
101
6 channels
110
7 channels
111
8 channels
i2s_en[3:0]
, TX2 Main Map,
Address 0xF40C[5:2]
This signal is used to enable the I2S pins.
Function
i2s_en[3:0]
Description
0000
All I2S disabled
1111 (default)
All I2S enabled
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