MPC8540 datasheet(1059/1302 Pages) FREESCALE

1059 / 1302 page

Memory Map/Register Definition

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

Freescale Semiconductor

18-11

18.4.1.8 General-Purpose Output Data Register (GPOUTDR)

GPOUTDR, shown in Figure 18-8, contains the data driven as general-purpose output on

TSEC2_TxD[0:7] and/or PCI_AD[47:40] when either of these buses is configured as

general-purpose I/O buses, as described in Section 18.4.1.7, “General-Purpose I/O Control

Reads return valid data only for bits corresponding to pins enabled as general-purpose outputs.

GPOUTDR may be accessed using single byte writes (using big-endian addressing) so that writes

to one byte do not affect outputs controlled by others.

Table 18-11 describes the fields of GPOUTDR.

PCIin

PCI_AD[39:32] input enable. Used to enable PCI_AD[39:32] for use as general-purpose input if the PCI

interface is in 32-bit mode or is disabled

0 PCI_AD[39:32] is not used as general-purpose input.

1 PCI_AD[39:32] is used as general-purpose input.

16–31

—

Reserved

015 16

GPOUT

0000

00000

0000

Reset

0000_0000_0000_0000_0000_0000_0000_0000

Offset

0xE_0040

Figure 18-8. General-Purpose Output Data Register (GPOUTDR)

Table 18-11. GPOUTDR Field Descriptions

Bits

Name

Description

0–15

GPOUT General-purpose output data. When the corresponding signals are configured to be general-purpose

output signals, the values of the bits of GPOUT are driven onto those pins. GPOUTDR[0:7]

corresponds to TSEC2_TxD[0:7]. GPOUTDR[8:15] corresponds to PCI_AD[47:40] as follows:

GPOUTDR[8]

↔ PCI_AD[47]

GPOUTDR[9]

↔ PCI_AD[46]

GPOUTDR[10]

↔ PCI_AD[45]

GPOUTDR[11]

↔ PCI_AD[44]

GPOUTDR[12]

↔ PCI_AD[43]

GPOUTDR[13]

↔ PCI_AD[42]

GPOUTDR[14]

↔ PCI_AD[41]

GPOUTDR[15]

↔ PCI_AD[40]

16–31

—

Reserved, should be cleared

Table 18-10. GPIOCR Field Descriptions (continued)

Bits

Name

Description

MPC8540 Datasheet(PDF) 1059 Page - Freescale Semiconductor, Inc

MPC8540 Datasheet(HTML) 1059 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