MPC8280 datasheet(581/1386 Pages) FREESCALE

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Serial Interface with Time-Slot Assigner

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

Freescale Semiconductor

15-3

15.1

Features

Each SI has the following features:

•

Can connect to four independent TDM channels. Each TDM can be one of the following:

— T1 or E1 line

— Integrated services digital network primary rate (PRI)

— An ISDN basic rate–interchip digital link (IDL) channel in up to four TDM channels—each

IDL channel requires support from a separate SCC

— ISDN basic rate–general circuit interface (GCI) in up to two TDM channels—each GCI

channel requires support from a separate SMC

— E3 or DS3 clear channel on TDMa only (parallel-nibble interface)

— User-defined interfaces

•

Independent, programmable transmit and receive routing paths

•

Independent transmit and receive frame syncs allowed

•

Independent transmit and receive clocks allowed

•

Selection of rising/falling clock edges for the frame sync and data bits

•

Supports 1

× and 2× input clocks (1 or 2 clocks per data bit)

•

Selectable delay (0–3 bits) between frame sync and frame start

•

Four programmable strobe outputs and four (2

×) clock output pins

•

1- or 8-bit resolution in routing, masking, and strobe selection

•

Supports frames up to 16,384 bits long

•

Internal routing and strobe selection can be dynamically programmed

•

Supports automatic echo and loopback mode for each TDM

•

Maximum TDM frequency is serial-dependent:

CPM Clock

— for MCCs

CPM Clock

— for FCCs transparent

— for all other serials

CPM Clock

— for FCCs HDLC

CPM Clock

— for FCCs HDLC nibble mode

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