Analog Devices ADV8003, Руководство по оборудованию

Страница: 276 / 440

ADV8003 Hardware Manual
Rev. B, August 2013 276
• source_number
• word_length
• channel_status
• i2s_sf
Table 65 provides a mapping between the channel status bit encapsulated in the Audio Sample packets sent across the HDMI link to the
downstream sink and corresponding ADV8003 fields located in the Tx Main register map. Note that the mapping shown in Table 65 is the
only application for I2S modes 0, 1, 2 and 3 set via the i2s_format[1:0] field.
When the part is configured to receive an SPDIF stream, the channel status information is taken from the input SPDIF stream.
audioif_ca[7:0]
, TX2 Main Map,
Address 0xF476[7:0]
This register is used to set the speaker mapping or placement (Audio InfoFrame).
Function
audioif_ca[7:0] Description
00000000  Default value
xxxxxxxx Speaker mapping
cr_bit
, TX2 Main Map, Address 0xF412[5]
This bit is used to set the channel status copyright information. Refer to the IEC 60958-3 specification.
Function
cr_bit Description
0  Copyright asserted
1 Copyright not asserted
a_info[2:0]
, TX2 Main Map, Address 0xF412[4:2]
This signal is used to set the channel status emphasis information. Refer to the IEC 60958-3 specification.
Function
a_info[2:0] Description
000  2 audio channels without pre-emphasis
001 2 audio channels with 50/15uS pre-emphasis
010 Reserved (for 2 audio channels with pre-emphasis)
011 Reserved (for 2 audio channels with pre-emphasis)
100-111 Reserved
clk_acc[1:0]
, TX2 Main Map, Address 0xF412[1:0]
This signal is used to set the channel status clock accuracy information. Refer to the IEC 60958-3 specification.