參數(shù)資料
型號: TMS320C6713BGDPA200
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: FLOATING-POINT DIGITAL SIGNAL PROCESSORS
中文描述: 浮點數(shù)字信號處理器
文件頁數(shù): 95/150頁
文件大?。?/td> 2039K
代理商: TMS320C6713BGDPA200
TMS320C6713, TMS320C6713B
FLOATING-POINT DIGITAL SIGNAL PROCESSORS
SPRS186I
DECEMBER 2001
REVISED MAY 2004
95
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
1443
EMIF big endian mode correctness [C6713B only]
The HD8 pin device endian mode (LENDIAN) selects the endian mode of operation (Little or Big Endian). For
the C6713/13B device Little Endian is the default setting.
The C6713
B
HD12 pin (EMIF Big Endian Mode Correctness) [EMIFBE] enhancement allows the flexibility to
change the EMIF data placement on the EMIF bus.
When using the default setting of HD12 = 1 for the C6713B, the EMIF will present 8-bit or 16-bit data on the
ED[7:0] side of the bus if using Little Endian mode (HD8 = 1) and to the ED[31:24] side of the bus if using Big
Endian mode. Figure 23 shows the mapping of 16-bit and 8-bit C6713
B
devices.
EMIF DATA LINES (PINS) WHERE DATA PRESENT
ED[23:16] (BE2)
32-Bit Device in
Any
Endianness Mode
16-Bit Device in Big Endianness Mode
8-Bit Device in Big
Endianness Mode
ED[31:24] (BE3)
ED[15:8] (BE1)
ED[7:0] (BE0)
16-Bit Device in Little Endianness Mode
8-Bit Device in Little Endianness Mode
Figure 23. 16/8-Bit EMIF Big Endian Mode Correctness Mapping (HD12 = 1) [C6713B Only]
When HD12 = 0 for the C6713B, enabling EMIF endianness correction, the EMIF will present 8-bit or 16-bit data
on the ED[7:0] side of the bus, regardless of the endianess mode (see Figure 24).
EMIF DATA LINES (PINS) WHERE DATA PRESENT
ED[23:16] (BE2)
32-Bit Device in
Any
Endianness Mode
ED[31:24] (BE3)
ED[15:8] (BE1)
ED[7:0] (BE0)
16-Bit Device in
Any
Endianness Mode
8-Bit Device in
Any
Endianness Mode
Figure 24. 16/8-Bit EMIF Big Endian Mode Correctness Mapping (HD12 = 0) [C6713B Only]
This
new
C6713B endianness correction functionality does not affect systems using the default value of
HD12 = 1.
This
new
C6713
B
feature does
not
affect systems operating in Little Endian mode.
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