ST18-AU1 STMICROELECTRONICS [STMicroelectronics], ST18-AU1 Datasheet - Page 33
ST18-AU1
Manufacturer Part Number
ST18-AU1
Description
SIX-CHANNEL DOLBY AC3/MPEG2 AUDIO DECODER
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST18-AU1.pdf
(87 pages)
- Current page: 33 of 87
- Download datasheet (497Kb)
PCMDIV
On reset, the PCMDIV value is set to 0.
If the SPDIF transmitter is used:
mute
play
Mute_en
-
Bit
PCMDIV
-
15
-
14
-
Mute enable
Bit mute is set by detection of falling edge on mute input
It is cleared by writing ‘0’ to it.
RESERVED, read as 0.
Function
PCMCLK divide factor
f
RESERVED, read as 0.
13
PCMCLK
-
If output word size is greater than 16-bit, PCMDIV must be set to at least 1
(divide by 2) for correct generation of SPDIFCLK at twice the frequency of
SCLKPCM.
If output word size is 16-bit, PCMDIV must be set to at least 2 (divide by 4).
Play
0
0
1
1
0
1
00000000
00000001
...
11111111
12
-
=
fMCLK_PCM
Mute
0
1
0
1
disable mute input
enable mute input
11
-
10
/2(PCMDIV) if PCMDIV /= ‘00000
-
no DMA req. serial out = 0 SCLK, WS not running
no DMA req. serial out = 0 SCLK, WS running
DMA req. serial out = ’data’ SCLK, WS running
DMA req. serial out = 0 SCLK, WS running
1
2
...
510
9
-
8
-
7
6
5
PCMDIV
4
3
2
ST18-AU1
1
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