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MPC8540 Datasheet(PDF) 897 Page - Freescale Semiconductor, Inc

Part # MPC8540
Description  MPC8540 PowerQUICC III??Integrated Host Processor Reference Manual
PDF  1302 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8540 Datasheet(HTML) 897 Page - Freescale Semiconductor, Inc

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Functional Description
MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1
Freescale Semiconductor
16-75
Figure 16-66. PCI Type 0 Configuration Translation
For PCI type 0 configuration cycles, the MPC8540 translates the device number field of the PCI
CFG_ADDR register into a unique IDSEL signal for up to 21 different devices. Each device
connects its IDSEL input to one of the PCI_AD[31:11] signals. For PCI type 0 configuration
cycles, the MPC8540 translates the device number to ADn as shown in Table 16-55.
Table 16-55. PCI Type 0 Configuration—Device Number to ADn Translation
Device Number
ADn Used for IIDSEL
Device Number
ADn Used for IIDSEL
Binary
Decimal
Binary
Decimal
0b0_0000–0b0_1001
0–9
—
0b1_0101
21
AD21
0b0_1010
10
AD31
0b1_0110
22
AD22
0b0_1011
11
AD11
0b1_0111
23
AD23
0b0_1100
12
AD12
0b1_1000
24
AD24
0b0_1101
13
AD13
0b1_1001
25
AD25
0b0_1110
14
AD14
0b1_1010
26
AD26
0b0_1111
15
AD15
0b1_1011
27
AD27
0b1_0000
16
AD16
0b1_1100
28
AD28
0b1_0001
17
AD17
0b1_1101
29
AD29
0b1_0010
18
AD18
0b1_1110
30
AD30
0b1_0011
19
AD19
0b1_1111 1
31
—
0b1_0100
20
AD20
1A device number of all ones indicates a PCI special-cycle or interrupt-acknowledge transaction.
0 1
7 8
15 16
20 21
23 24
29 30 31
Bus Number
000_0000
Reserved
Device Number
Function Number
Register Number
E
00
31
11 10
2 1
0
IDSEL–Only One Signal High
Function/Register Number
00
Contents of PCI CFG_ADDR Register
PCI_AD[31:0] Signals
During Address Phase
See Table 16-55



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