I2S Audio - Analog Devices ADV8003 Hardware Manual

audio_input audio_mode
_sel Value
Value
0b011 0b00
0b011 0b01
0b011 0b01
0b011 0b01
0b011 0b01
0b011 0b10
0b011 0b11
0b011 0b11
0b011 0b11
0b011 0b11
1
Optional signal
6.11.2.1.

I2S Audio

The ADV8003 can receive up to four stereo channels of I2S audio at up to a 192 kHz sampling rate. The number of I2S channels the Tx
processes can be selected with audioif_cc[2:0]. The selection of the active I2S channels is done via the
sampling frequency of the input stream must be set appropriately via the
determine the pixel repetition factor that the Tx core applies to the video data (refer to Section 6.10.3). The value programmed in
i2s_sf[3:0] is also used to be sent across the TMDS output link in the channel status data information contained in the Audio Sample
packets.
The placement of I2S channels into the Audio Sample subpackets defined in the HDMI specification can be specified in the following
fields:
• subpkt0_l_src
•
subpkt0_r_src
• subpkt1_l_src
•
subpkt1_r_src
• subpkt2_l_src
•
subpkt2_r_src
• subpkt3_l_src
• subpkt3_r_src
When these fields are set to their default values, all I2S channels are placed in their respective position (for example, I2S0 left channel in
Rev. B, August 2013
Input
I2s_format Audio
Input
Value
Signal
0bXX I2S[3:0]
0b00 I2S[3:0]
0b01 I2S[3:0]
0b10 I2S[3:0]
0b11 I2S[3:0]
0bXX SPDIF
0b00 SPDIF
0b01 I2S[3:0]
0b10 I2S[3:0]
0b11 I2S[3:0]
Clock Pins Encoding
MCLK Biphase
Mark
SCLK, Normal
MCLK
1
SCLK, MCLK Normal
SCLK, Normal
MCLK
1
SCLK, Normal
MCLK
1
MCLK Biphase
Mark
SCLK, Normal
MCLK 1
SCLK, Normal
MCLK 1
SCLK, Normal
MCLK 1
MCLK Normal
i2s_sf[3:0] field. This value is used along with the VIC to
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ADV8003 Hardware Manual
ADV8003 Format
Output Pin
Mapping
AUD_IN[4:0] IEC61937
MCLK
AUD_IN[4:0] Standard
I2S
SCLK
MCLK
AUD_IN[4:0] Right
justified
SCLK
MCLK
AUD_IN[4:0] Left justified
SCLK
MCLK
AUD_IN[4:0] AES3 Direct
SCLK
MCLK
AUD_IN[0] IEC61937
MCLK
AUD_IN[0] Standard
I2S
SCLK
MCLK
AUD_IN[4:0] Right
Justified
SCLK
MCLK
AUD_IN[4:0] Left
Justified
SCLK
MCLK
AUD_IN[4:0] IEC61937
MCLK
i2s_en[3:0]
Output
Packet Type
HBR Packet
HBR Packet
HBR Packet
HBR Packet
HBR Packet
HBR Packet
HBR Packet
HBR Packet
HBR Packet
HBR Packet
field. The audio