Datasheet

2003 Apr 10 58
NXP Semiconductors Preliminary specification
Stereo audio codec with SPDIF interface UDA1355H
Table 73 Word length
29 to 28 SPDO_BIT[29:28] Clock accuracy. Value indicating the clock accuracy:
00 = level II
01 = level I
10 = level III
11 = reserved
27 to 24 SPDO_BIT[27:24] Sample frequency. Value indicating the sampling frequency:
0000 = 44.1 kHz
0001 = 48 kHz
0010 = 32 kHz
other states = reserved
23 to 20 SPDO_BIT[23:20] Channel number. Value indicating the channel number (see Table 74).
19 to 16 SPDO_BIT[19:16] Source number. Value indicating the source number (see Table 75).
15 to 8 SPDO_BIT[15:8] General information. Value indicating general information (see Table 76).
7to6 SPDO_BIT[7:6] Mode. Value indicating mode 0:
00 = mode 0
other states = reserved
5to3 SPDO_BIT[5:3] Audio sampling. Value indicating the type of audio sampling (linear PCM). For
bit SPDO_BIT1 = 0:
000 = two audio samples without pre-emphasis
001 = two audio samples with 50/15 μs pre-emphasis
010 = reserved (two audio samples with pre-emphasis)
011 = reserved (two audio samples with pre-emphasis)
other states = reserved
2 SPDO_BIT2 Software copyright. Value indicating software for which copyright is asserted or not.
If this bit is logic 0, then copyright is asserted; if this bit is logic 1, then no copyright is
asserted.
1 SPDO_BIT1 Audio sample word. Value indicating the type of audio sample word. If this bit is
logic 0, then the audio sample word represents linear PCM samples; if this bit is
logic 1, then the audio sample word is used for other purposes.
0 SPDO_BIT0 Channel status. Value indicating the consumer use of the status block. This bit is
logic 0.
SPDO_BIT32 SPDO_BIT35 SPDO_BIT34 SPDO_BIT33 WORD LENGTH
0000not indicated
000116bits
001018bits
0011reserved
010019bits
010120bits
011017bits
0111reserved
BIT SYMBOL DESCRIPTION