CS61884 datasheet(10/71 Pages) CIRRUS

No. de pieza	CS61884

Descripción Electrónicos	Octal T1/E1/J1 Line Interface Unit

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Fabricante Electrónico	CIRRUS [Cirrus Logic]

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CS61884

10

DS485F1

3.2 Control

SYMBOL

LQFP

FBGA

TYPE

DESCRIPTION

MCLK

10

E1

I

Master Clock Input

This pin is a free running reference clock that should be

either 1.544 MHz for T1/J1 or 2.048 MHz for E1 operation.

This timing reference is used as follows:

- Timing reference for the clock recovery and jitter attenua-

tion circuitry.

- RCLK reference during Loss of Signal (LOS) conditions

- Transmit clock reference during Transmit all Ones (TAOS)

condition

- Wait state timing for microprocessor interface

- When this pin is held “High”, the PLL clock recovery cir-

cuit is disabled. In this mode, the CS61884 receivers

function as simple data slicers.

- When this pin is held “Low”, the receiver paths are pow-

ered down and the output pins RCLK, RPOS, and RNEG

are High-Z.

MODE

11

E2

I

Mode Select

This pin is used to select whether the CS61884 operates in

Serial host, Parallel host or Hardware mode.

Host Mode - The CS61884 is controlled through either a

serial or a parallel microprocessor interface (Refer to HOST

MODE (See Section 13 on page 32).

Hardware Mode - The microprocessor interface is disabled

and the device control/status are provided through the pins

on the device.

NOTE: For serial host mode connect this pin to a resistor

divider consisting of two 10K

Ω resistors between

VCCIO and GNDIO.

Table 1. Operation Mode Selection

Pin State

OPERATING Mode

LOW

Hardware Mode

HIGH

Parallel Host Mode

VCCIO/2

Serial Host Mode

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Descripción similar - CS61884

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
Cirrus Logic	CS61884	1Mb / 72P	Octal T1/E1/J1 Line Interface Unit
PMC-Sierra, Inc	PM4318	2Mb / 244P	OCTAL E1/T1/J1 LINE INTERFACE DEVICE
Renesas Technology Corp	IDT82V2048E	2Mb / 77P	OCTAL CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT March 2009
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Maxim Integrated Produc...	DS2148	1Mb / 73P	5V E1/T1/J1 Line Interface Unit REV: 011206
Integrated Device Techn...	IDT82V2048E	1Mb / 76P	OCTAL CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT
Maxim Integrated Produc...	DS26303	1Mb / 101P	3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit REV: 053107
Cirrus Logic	CDB61884	406Kb / 22P	Octal T1/E1/J1 Line Interface Evaluation Board
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