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| 型號： | TMS320VC5409GGU-80 |
| 廠商： | Texas Instruments |
| 文件頁數(shù)： | 38/93頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FIXED POINT DSP 144-BGA |
| 標準包裝： | 160 |
| 系列： | TMS320C54x |
| 類型： | 定點 |
| 接口： | 主機接口，McBSP |
| 時鐘速率： | 80MHz |
| 非易失內(nèi)存： | ROM（32 kB） |
| 芯片上RAM： | 64kB |
| 電壓 - 輸入/輸出： | 3.30V |
| 電壓 - 核心： | 1.80V |
| 工作溫度： | -40°C ~ 100°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 144-LFBGA |
| 供應(yīng)商設(shè)備封裝： | 144-BGA MICROSTAR（12x12） |
| 包裝： | 托盤 |
| 配用： | 296-15829-ND - DSP STARTER KIT FOR TMS320C5416 |
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Functional Overview
43
April 1999 Revised October 2008
SPRS082F
3.3.5.10.2DMA Channel Interrupt Selection
The DMA controller can generate a CPU interrupt for each of the six channels. However, due to a limit on the
number of internal CPU interrupt inputs, channels 0, 1, 2, and 3 are multiplexed with other interrupt sources.
DMA channels 0, 1, 2, and 3 share an interrupt line with the receive and transmit portions of the McBSP. When
the 5409 is reset, the interrupts from these three DMA channels are deselected. The INTSEL bit field in the
DMPREC register can be used to select these interrupts, as shown in Table 314.
Table 314. DMA Channel Interrupt Selection
INTSEL Value
IMR/IFR[6]
IMR/IFR[7]
IMR/IFR[10]
IMR/IFR[11]
00b (reset)
BRINT2
BXINT2
BRINT1
BXINT1
01b
BRINT2
BXINT2
DMAC2
DMAC3
10b
DMAC0
DMAC1
DMAC2
DMAC3
11b
Reserved
3.3.5.11
DMA Subbank Addressed Registers
The direct memory access (DMA) controller has several control registers associated with it. The main control
register (DMPREC) is a standard memory mapped register. However, the other registers are accessed using
the subbank addressing scheme. This allows a set, or subbank of registers to be accessed through a single
memory location. The DMA subbank address (DMSA) register is used as a pointer to select a particular
register within the subbank, while the DMA subbank data (DMSDN) register or the DMA subbank data register
with autoincrement (DMSDI) is used to access (read or write) the selected register.
When the DMSDI register is used to access the subbank, the subbank address is automatically
postincremented so that a subsequent access affects the next register within the subbank. This autoincrement
feature is intended for efficient, successive accesses to several control registers. If the auto-increment feature
is not required, the DMSDN register should be used to access the subbank. Table 315 shows the DMA
controller subbank addressed registers and their corresponding subaddresses.
Table 315. DMA Subbank Addressed Registers
DMA
SUB
DESCRIPTION
NAME
ADDRESS
SUB
ADDRESS
DESCRIPTION
DMSRC0
56h/57h
00h
DMA channel 0 source address register
DMDST0
56h/57h
01h
DMA channel 0 destination address register
DMCTR0
56h/57h
02h
DMA channel 0 element count register
DMSFC0
56h/57h
03h
DMA channel 0 sync select and frame count register
DMMCR0
56h/57h
04h
DMA channel 0 transfer mode control register
DMSRC1
56h/57h
05h
DMA channel 1 source address register
DMDST1
56h/57h
06h
DMA channel 1 destination address register
DMCTR1
56h/57h
07h
DMA channel 1 element count register
DMSFC1
56h/57h
08h
DMA channel 1 sync select and frame count register
DMMCR1
56h/57h
09h
DMA channel 1 transfer mode control register
DMSRC2
56h/57h
0Ah
DMA channel 2 source address register
DMDST2
56h/57h
0Bh
DMA channel 2 destination address register
DMCTR2
56h/57h
0Ch
DMA channel 2 element count register
DMSFC2
56h/57h
0Dh
DMA channel 2 sync select and frame count register
DMMCR2
56h/57h
0Eh
DMA channel 2 transfer mode control register
DMSRC3
56h/57h
0Fh
DMA channel 3 source address register
DMDST3
56h/57h
10h
DMA channel 3 destination address register
DMCTR3
56h/57h
11h
DMA channel 3 element count register
DMSFC3
56h/57h
12h
DMA channel 3 sync select and frame count register
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