MPC8540 datasheet(829/1302 Pages) FREESCALE

829 / 1302 page

External Signal Descriptions

MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

Freescale Semiconductor

16-7

signals. See Chapter 4, “Reset, Clocking, and Initialization,” and the MPC8540 Integrated

Processor Hardware Specifications, for more information on these values and signal timing.

16.1.3.6 PCI/X Impedance

The MPC8540 has a programmable impedance for PCI/X bus signals. The initial value is

determined by the value on the PCI_GNT1 power-on reset configuration signal. See Chapter 4,

“Reset, Clocking, and Initialization,” and the MPC8540 Integrated Processor Hardware

Specifications, for more information.

16.2 External Signal Descriptions

Figure 16-2 shows the external PCI/X signals.

Figure 16-2. PCI/X Interface External Signals

PCI_AD[31:0]

PCI_PAR

PCI_C/BE[3:0]

PCI_TRDY

PCI_IRDY

PCI_STOP

PCI_DEVSEL

PCI_PERR

PCI_SERR

PCI_FRAME

PCI_IDSEL

PCI/X Required Signals

Address

Interface

Error

PCI_REQ[0:4]

PCI_GNT[0:4]

Arbitration

PCI/X Optional Signals

PCI_C/BE[7:4]

PCI_PAR64

PCI_REQ64

PCI_ACK64

PCI_AD[63:32]

64-Bit

and Data

Command

Reporting

Extension

(37 Signals)

(6 Signals)

(2 Signals)

(10 Signals)

(39 Signals)

MPC8540 Datasheet(PDF) 829 Page - Freescale Semiconductor, Inc

MPC8540 Datasheet(HTML) 829 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL