ST18-AU1 STMICROELECTRONICS [STMicroelectronics], ST18-AU1 Datasheet - Page 43

• Manufacturer Part Number: ST18-AU1
• Description: SIX-CHANNEL DOLBY AC3/MPEG2 AUDIO DECODER
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

DMS: Mask sensitivity control register
Two bits are dedicated to each DMA channel (bits 0 and 1 to channel 0, bits 4 and 5 to channel
1, bits 8 and 9 to channel 2, bits 12 and 13 to channel 3).
(Address = 0041, Reset = x3333h, Read/Write)
DLAi:
DAIi
Bit
DMKi
DSEi
15
-
14
-
DSE3 DMK3
13
Load address
Address increment
Function
DMA mask
DMA sensitivity
0: DCAi content incremented after each data transfer (default)
1: DCAi content loaded with DIA content if DCCi value is 0, or DCAi content
incremented if DCCi value is not equal to 0
0: DCAi content unchanged (default)
1: DCAi content modified according to DLAi state
0: DMA channel not masked
1: DMA channel masked (default)
0: Low level
1: Falling edge (default)
12
11
-
10
-
DSE2 DMK2
9
8
7
-
6
-
DSE1 DMK1
5
4
3
-
2
-
DSE0 DMK0
1
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