參數(shù)資料
型號: TMX320VC5509AGHH
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: TMS320VC5509A Fixed-Point Digital Signal Processor
中文描述: TMS320VC5509A定點數(shù)字信號處理器
文件頁數(shù): 43/144頁
文件大小: 1603K
代理商: TMX320VC5509AGHH
Functional Overview
43
November 2002 Revised January 2005
SPRS205D
3.5.3 Parallel Port Signal Routing
The 5509A allows access to 16-bit-wide (read and write) or 8-bit-wide (read only) asynchronous memory and
16-bit-wide SDRAM. For 16-bit-wide memories, EMIF.A[0] is kept low and is not used. To provide as many
address pins as possible, the 5509A routes the parallel port signals as shown in Figure 36.
Figure 36 shows the addition of the A
[0] signal in the BGA package. This pin is used for asynchronous
memory interface only, while the A[0] pin is used with HPI or GPIO. Figure 37 summarizes the use of the
parallel port signals for memory interfacing.
EMIF.A[0]
GPIO.A[0]
HPI.HA[0]
EMIF.A[13:1]
HPI.HA[13:1]
GPIO.A[13:1]
EMIF.A[14]
GPIO.A[14]
EMIF.A[15]
GPIO.A[15]
EMIF.A[20:16]
A’[0] (BGA only)
A[0]
A[13:1]
A[14] (BGA only)
A[15] (BGA only)
A[20:16] (BGA only)
Figure 36. Parallel Port Signal Routing
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