EP80579 Datasheet, PDF (1676/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
42.4.1.3 Expansion Bus Interface Configuration
Table 42-2. Expansion Bus Address and Data Byte Steering (Sheet 1 of 2)
Internal
Bus Cycle
Device Width
Connected to
Expansion Bus
(8-bit or 16-
bit)
Internal Address
Value
(Internal
_ADDR[1:0])
Expansion Bus
Address Value
(EX_ADDR[1:0]
)
Data Location Translation Between Expansion
Data Bus and Internal Data Bus
Byte write
8-bit
00
Word write
16-bit
00
Byte read
8-bit
00
Word read
16-bit
00
Byte read
8-bit
0x
Byte read
8-bit
1x
Word read
16-bit
0x
Word read
16-bit
1x
Byte write
8-bit
0x
Byte write
8-bit
1x
Word write
16-bit
0x
00
Internal data bus [31:24] = Expansion data bus
[7:0], EX_BE_N = 0x2
01
Internal data bus [23:16] = Expansion data bus
[7:0], EX_BE_N = 0x2
10
Internal data bus [15:8] = Expansion data bus
[7:0], EX_BE_N = 0x2
11
Internal data bus [7:0] = Expansion data bus
[7:0], EX_BE_N = 0x2
00
Internal data bus [31:16] = Expansion data bus
[15:0], EX_BE_N = 0x0
10
Internal data bus [15:0] = Expansion data bus
[15:0], EX_BE_N = 0x0
00
Internal data bus [31:24] = Expansion data bus
[7:0], EX_BE_N = 0x2
01
Internal data bus [23:16] = Expansion data bus
[7:0], EX_BE_N = 0x2
10
Internal data bus [15:8] = Expansion data bus
[7:0], EX_BE_N = 0x2
11
Internal data bus [7:0] = Expansion data bus
[7:0], EX_BE_N = 0x2
00
Internal data bus [31:16] = Expansion data bus
[15:0], EX_BE_N = 0x0
10
Internal data bus [15:0] = Expansion data bus
[15:0], X_BE_N = 0x0
00
Internal data bus [31:24] = Expansion data bus
[7:0], EX_BE_N = 0x2
01
Internal data bus [23:16] = Expansion data bus
[7:0], EX_BE_N = 0x2
10
Internal data bus [15:8] = Expansion data bus
[7:0], EX_BE_N = 0x2
11
Internal data bus [7:0] = Expansion data bus
[7:0], EX_BE_N = 0x2
00
Internal data bus [31:16] = Expansion data bus
[15:0], EX_BE_N = 0x0
10
Internal data bus [15:0] = Expansion data bus
[15:0], EX_BE_N = 0x0
00
Internal data bus [31:24] = Expansion data bus
[7:0], EX_BE_N = 0x2
01
Internal data bus [23:16] = Expansion data bus
[7:0], EX_BE_N = 0x2
10
Internal data bus [15:8] = Expansion data bus
[7:0], EX_BE_N = 0x2
11
Internal data bus [7:0] = Expansion data bus
[7:0], EX_BE_N = 0x2
00
Internal data bus [31:16] = Expansion data bus
[15:0], EX_BE_N = 0x0
Intel^® EP80579 Integrated Processor Product Line Datasheet
1676
August 2009
Order Number: 320066-003US