MPC8540 datasheet(178/1302 Pages) FREESCALE

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

3-10

Freescale Semiconductor

Signal Descriptions

DMA_DACK2

DMA acknowledge 2

DMA

LCS6

15-3/15-6

DMA_DACK3

DMA acknowledge 3

DMA

IRQ10

15-3/15-6

DMA_DACK[0:1]

DMA acknowledge 0–1

DMA

—

15-3/15-6

DMA_DDONE2

DMA done 2

DMA

LCS7

15-3/15-6

DMA_DDONE3

DMA done 3

DMA

IRQ11

15-3/15-6

DMA_DDONE[0:1]

DMA done 0–1

DMA

—

15-3/15-6

DMA_DREQ2

DMA request 2

DMA

LCS5

15-3/15-6

DMA_DREQ3

DMA request 3

DMA

IRQ9

15-3/15-6

DMA_DREQ[0:1]

DMA request 0–1

DMA

—

15-3/15-6

EC_GTX_CLK125

Gigabit reference clock

Gigabit clock

—

14-3/14-14

EC_MDC

Ethernet management

data clock

Ethernet

management

cfg_tsec_reduce

14-3/14-14

EC_MDIO

Ethernet management

data in/out

Ethernet

management

—1

I/O

14-3/14-14

FEC_COL

FEC collision detect

10/100

—

21-1/21-8

FEC_CRS

FEC carrier sense

10/100

—

21-1/21-8

FEC_RXD[0:3]

FEC receive data

10/100

—

21-1/21-8

FEC_RX_CLK

FEC receive clock

10/100

—

21-1/21-8

FEC_RX_DV

FEC receive data valid

10/100

—

21-1/21-8

FEC_RX_ER

FEC receiver error

10/100

—

21-1/21-8

FEC_TXD[0:3]

FEC transmit data

10/100

—

21-1/21-8

FEC_TX_CLK

FEC transmit clock in

10/100

—

21-1/21-8

FEC_TX_EN

FEC transmit enable

10/100

—

21-1/21-8

FEC_TX_ER

FEC transmit error

10/100

—

21-1/21-8

HRESET

Hard reset

System control

—

4-2/4-2

HRESET_REQ

Hard reset request

System control

—

4-2/4-2

IIC_SCL

I2C serial clock

I2C—

I/O

11-2/11-4

IIC_SDA

I2C serial data

I2C—

I/O

11-2/11-4

IRQ[0:8]

External interrupt 0–8

PIC

—

10-6/10-8

IRQ10

External interrupt 10

PIC

DMA_DACK3

10-6/10-8

IRQ11

External interrupt 11

PIC

DMA_DDONE3

10-6/10-8

IRQ9

External interrupt 9

PIC

DMA_DREQ3

10-6/10-8

Table 3-2. MPC8540 Alphabetical Signal Reference (continued)

Name

Description

Functional

Block

Alternate

Function(s)

No. of

Signals

I/O

Table/

Page

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