MC145650 Просмотр технического описания (PDF) - Motorola => Freescale

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MC145650

Copper Gold Asymmetric Digital Subscriber Line(ADSL)Transceiver

Motorola => Freescale 

Host Processor Interface (HPI)

The host processor interface allows communication with the

MC145650 by an external microprocessor. This interface is

compatible with the 8-bit parallel data and address interface

available on popular Motorola microcontrollers and allows the

host processor to be connected directly to the MC145650.

The HPI parallel interface contains an 8-bit data bus, a 5-bit

address bus, a chip select and a read/write signal. The inter-

face also provides a single interrupt line to allow the

MC145650 to request interrupt service from the host proces-

sor. Depending on the application, this processor could be

from the Motorola MC68302, MC68360, or MPC860 families.

PIN ASSIGNMENTS

Pinout for the MC145650 is shown in Figure 2 below.

Timing Block

System clocks for the MC145650 are generated by the timing

block. Depending on the operating mode and the type of

transceiver operating at the far end, the timing block will gen-

erate the high rate system clock from an externally supplied

clock, or from the recovered timing from the received DMT

pilot tone. The externally supplied clock may be provided

directly or a crystal may be used to generate a local oscillator

reference.

Test Block

The test block provides the control circuitry necessary to per-

form JTAG and special debug features.

ADATA

ACLK

ADAV

BDATA

BCLK

BDAV

CDATA

CCLK

CDAV

DDATA

DCLK

DDAV

E1DATA

E1DAV

E1CLK

E2DATA

E2DAV

E2CLK

F1DATA

F1DAV

F1CLK

F2DATA

F2DAV

F2CLK

G1DATA

G1DAV

G1CLK

G2DATA

G2DAV

G2CLK

HVCC (2)

HVSS (2)

IVCC (4)

IVSS (4)

DVCC (4)

DVSS (4)

QVCC (4)

QVSS (4)

MC145650

Port A

Port B

Port C

Analog

Interface

Port D

Port E

Clocks

Interleaver

Memory

Port

Port F

Port G

Controls

Host

Processor

Interface

JTAG

Test Port

Digital

Power

Analog

Power

TXP

TXN

RXP

RXN

RXG

TXG

HFB

RXREFP

RXREFN

TXREFP

TXREFN

VCXO_REFP

VCXO_REFN

VAG

XTALIN

XTALOUT

ID[7:0]

IA[17:0]

IR_NW

ICS_L

IOEN_L

RESET_L

HA[4:0]

HD[7:0]

HCS_L

HR_NW

HIRQ_L

TCLK

TMS

TDI

TDO

TRST_L

DE_L

TICMD(3)

AVCC (5)

AVSS (5)

PVCC

PVSS

PVSS1

PCAP

AVSS_SUB

Figure 2. MC145650 Pin Assignments

MC145560PP2/D

3

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