參數(shù)資料
型號: D950-CORE
廠商: 意法半導(dǎo)體
元件分類: 數(shù)字信號處理
英文描述: 16-Bit Fixed Point Digital Signal Processor DSP Core
中文描述: 16位定點數(shù)字信號處理器DSP核
文件頁數(shù): 81/89頁
文件大?。?/td> 560K
代理商: D950-CORE
81/89
D950-Core
Control Registers
Three 16-bit control registers are dedicated to the DMA controller interface. These are the
general control register, the address interrupt control register and the Mask sensitivity control
register. They are detailed as follows:
DGC: General control register
Three bits are dedicated for each DMA channel (bits 0 to 2 to channel 0, bits 4 to 6 to channel
1, bits 8 to 10 to channel 2, bits 12 to 14 to channel 3). After reset, DGC default value is 0.
DBC1/DBC0: Bus choice for data transfer
0 : X-bus (def.)
01: Y-bus
10: I-bus
11: reserved
DRWi:
Data transfer direction
0: Write access (def.)
1: Read access
DAIC: Address/Interrupt control register
Four bits are dedicated for each DMA channel (bits 0 to 3 to channel 0, bits 4 to 7 to channel
1, bits 8 to 11 to channel 2, bits 12 to 15 to channel 3). After reset, DAIC default value is 0.
DAIi:
Address increment
0: DCAi content unchanged (def.)
1: DCAi content modified according to DLAi state
DLAi:
Load address
0: DCAi content incremented after each data transfer (def.)
1: DCAi content loaded with DIA content if DCCi value is 0 or DCAi content
incremented if DCCi value not equal to 0
DIPi:
Interrupt pending
0: No pending interrupt on channel i (def.)
1: Pending interrupt on channel i (enabled if DIP_ENA input is high)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
-
DRW3
DBC1
DBC0
-
DRW2
DBC1
DBC0
-
DRW1
DBC1
DBC0
-
DRW0
DBC1
DBC0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DAI3
DLA3
DIP3
DIE3
DAI2
DLA2
DIP2
DIE2
DAI1
DLA1
DIP1
DIE1
DAI0
DLA0
DIP0
DIE0
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