ADSP-2192M Просмотр технического описания (PDF) - Analog Devices
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ADSP-2192M Datasheet PDF : 40 Pages
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ADSP-2192M
PCI DWORD
BYTE3 IS
ALWAYS
UNUSED
PCI BYTE ADDRESS
BYTE0 IS UNUSED
BY 16-BIT MEMORY
LOCATIONS
0x0 0000
ALLOWED BYTE
ENABLES:
CBE = 1100
CBE = 0011
0x0 FFFC
0x1 0000
0x1 FFFC
BYTE3
UNUSED
BYTE2
BYTE1
16K ؋ 24-BIT BLOCK
16K ؋ 16-BIT BLOCK
BYTE0
DSP WORD ADDRESS
0x0000
UNUSED
0x3FFF
0x4000
0x7FFF
Figure 3. PCI Addressing for 24-Bit and 16-Bit Memory Blocks in 24-Bit Access (BAR2) Mode
PCI DWORD
PCI BYTE ADDRESS
BYTE3
BYTE2
DATA WORD N + 1
BYTE1
BYTE0
DATA WORD N
DSP WORD ADDRESS
0x0 0000
ALL BYTES ARE USED.
ALLOWED BYTE
ENABLES:
CBE = 1100
CBE = 0011
CBE = 0000
0x0 7FFE
0x0 8000
0x0 FFFE
DATA WORD N
DATA WORD N + 1
16K ؋ 24-BIT BLOCK
16K ؋ 16-BIT BLOCK
UNUSED
UNUSED
0x0000
0x3FFF
0x4000
0x7FFF
Figure 4. PCI Addressing for 24-Bit and 16-Bit Memory Blocks in 16-Bit Access (BAR3) Mode
24-Bit PCI DSP Memory Map (BAR2)
The complete PCI address footprint for the ADSP-2192M DSP
Memory Spaces in 24-bit (BAR2) Mode is shown in Table 8.
Table 8. 24-Bit PCI DSP Memory Map (BAR2 Mode)1
Block
DSP P0 Data RAM
Block 0
DSP P0 Data RAM
Block 1
DSP P0 Data RAM
Block 2
DSP P0 Data RAM
Block 3
DSP P0 Program RAM
Block
Byte3
UNUSED
UNUSED
...
UNUSED
UNUSED
UNUSED
...
UNUSED
UNUSED
UNUSED
...
UNUSED
UNUSED
UNUSED
...
UNUSED
UNUSED
UNUSED
...
UNUSED
Byte2
D[15:8]
D[15:8]
...
D[15:8]
D[15:8]
D[15:8]
...
D[15:8]
D[15:8]
D[15:8]
...
D[15:8]
D[15:8]
D[15:8]
...
D[15:8]
D[23:16]
D[23:16]
...
D[23:16]
Byte1
D[7:0]
D[7:0]
...
D[7:0]
D[7:0]
D[7:0]
...
D[7:0]
D[7:0]
D[7:0]
...
D[7:0]
D[7:0]
D[7:0]
...
D[7:0]
D[15:8]
D[15:8]
...
D[15:8]
Byte0
UNUSED
UNUSED
...
UNUSED
UNUSED
UNUSED
...
UNUSED
UNUSED
UNUSED
...
UNUSED
UNUSED
UNUSED
...
UNUSED
D[7:0]
D[7:0]
...
D[7:0]
Offset
0x0000 0000
0x0000 0004
...
0x0000 FFFC
0x0001 0000
0x0001 0004
...
0x0001 FFFC
0x0002 0000
0x0002 0004
...
0x0002 FFFC
0x0003 0000
0x0003 0004
...
0x0003 FFFC
0x0004 0000
0x0004 0004
...
0x0004 FFFC
REV. 0
–11–
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