XRT83VSH316 查看數據表（PDF） - Exar Corporation

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XRT83VSH316

IC LIU SH T1/E1/J1 16CH 316STBGA

Exar Corporation 

XRT83VSH316

16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT

RECEIVER SECTION

REV. 1.0.2

NAME

PIN

TYPE

DESCRIPTION

RCLK_IO

C5

I/O

Recovered Clock Input/Output:

This bi-directional clock can be used in two different modes:

1. As an input, the LIU will use this clock as its internal clock timing synchroni-

zation of the 19.44Mhz clock reference.

2. As an output, it is one of 16 recoverd line clocks selected by the Recovered

Clock Select [4:0] bits and output through this pin.

See table below.

RCLK_T1_E1B V18

Recovered Clock

Select [4:0]

0XXXX

10000

10001

10010

10011

10100

10101

10110

10111

11000

11001

11010

11011

11100

11101

11110

11111

Selected RCLK

Input

RCLK0

RCLK1

RCLK2

RCLK3

RCLK4

RCLK5

RCLK6

RCLK7

RCLK8

RCLK9

RCLK10

RCLK11

RCLK12

RCLK13

RCLK14

RCLK15

I/O

Recovered Clock Frequency Select

This bi-directional clock can be used in two different modes along with the

RCLK_IO pin.

1. As an input (RCLK_IO must be an input), it selects the frequency of the

RCLK_IO input. "Low" = E1, "High" = T1.

2. As an output (RCLK_IO must be an output), it indicates the frequency of

RCLK_IO, "Low" = E1, "High" = T1.

NOTE: The RCLKSEL[4:0] bits determine whether this pin is an input or output.

7

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