XRT83SL38ES-BG(2007) 查看數據表（PDF） - Exar Corporation

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XRT83SL38ES-BG
(Rev.:2007)

OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER

Exar Corporation 

XRT83SL38

OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR

REV. 1.0.2

SIGNAL NAME

A[7]

A[6]

A[5]

A[4]

A[3]

A[2]

A[1]

A[0]

LOOP1_3

LOOP0_3

LOOP1_2

LOOP0_2

LOOP1_1

LOOP0_1

LOOP1_0

LOOP0_0

µPCLK

ATAOS

INT

TRATIO

LEAD # TYPE

DESCRIPTION

Microprocessor Interface Address Bus Pins - Host mode:

A12

I Microprocessor Interface Address Bus[7]

B11

Microprocessor Interface Address Bus[6]

C11

Microprocessor Interface Address Bus[5]

D11

Microprocessor Interface Address Bus[4]

A11

Microprocessor Interface Address Bus[3]

B10

Microprocessor Interface Address Bus[2]

A10

Microprocessor Interface Address Bus[1]

C10

Microprocessor Interface Address Bus[0]

Loop-back Control Pins, Bits [1:0] Channel_[3:0]

A12

In Hardware mode, pins 67-74 and 173-180 control which Loop-Back mode is

B11

selected per channel. SEE”LOOP-BACK CONTROL PINS, BITS [1:0]

C11

CHANNEL_[7:0]” ON PAGE 18.

D11

NOTE: These pins are internally pulled “Low” with a 50kΩ resistor.

A11

B10

A10

C10

T13

I Microprocessor Clock Input - Host Mode:

Input clock for synchronous microprocessor operation. Maximum clock rate is 54

MHz.

NOTE: This pin is internally pulled “Low” with a 50kΩ resistor for asynchronous

microprocessor interface when no clock is present.

T13

Automatic Transmit “All Ones” - Hardware mode

This pin functions as an Automatic Transmit “All Ones”. SEE”AUTOMATIC

TRANSMIT “ALL ONES” PATTERN - HARDWARE MODE” ON PAGE 17.

L16

O Interrupt Output - Host mode

This pin goes “Low” to indicate an alarm condition has occurred within the device.

Interrupt generation can be globally disabled by setting the GIE bit to a “0” in the com-

mand control register.

L16

I Transmitter Transformer Ratio Select - Hardware mode

The function of this pin is to select the transmitter transformer ratio. SEE”TRANS-

MITTER TRANSFORMER RATIO SELECT - HARDWARE MODE” ON

PAGE 17.

NOTE: This pin is an open drain output and requires an external 10kΩ pull-up resistor.

14

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