LXT386LE datasheet(17/78 Pages) INTEL

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QUAD T1/E1/J1 Transceiver — LXT386

Datasheet

N12

TNEG3/

UBS3

Transmit Negative Data.

Unipolar/Bipolar Select.

N13

TPOS3/

TDATA3

Transmit Positive Data.

Transmit Data.

N14

TCLK3

Transmit Clock.

K12

LOS2

Loss of Signal.

M12

RNEG2/

BPV2

Receive Negative Data.

Bipolar Violation Detect.

M13

RPOS2/

RDATA2

Receive Positive Data.

Receive Data.

M14

RCLK2

Receive Clock.

L12

TNEG2/

UBS2

Transmit Negative Data.

Unipolar/Bipolar Select.

L13

TPOS2/

TDATA2

Transmit Positive Data.

Transmit Data.

L14

TCLK2

Transmit Clock.

K13

INT

Interrupt. This active Low, maskable, open drain output requires an

external 10k pull up resistor. If the corresponding interrupt enable bit is

enabled, INT goes Low to flag the host when the LXT386 changes state

(see details in the interrupt handling section). The microprocessor INT

input should be set to level triggering.

K14

ACK/

RDY/

SDO

Data Transfer acknowledge (Motorola Mode).

Ready (Intel mode).

Serial Data Output (Serial Mode).

Motorola Mode

A Low signal during a databus read operation indicates that the

information is valid. A Low signal during a write operation acknowledges

that a data transfer into the addressed register has been accepted

(acknowledge signal).Wait states only occur if a write cycle immediately

follows a previous read or write cycle (e.g. read modify write).

Intel Mode

A High signal acknowledges that a register access operation has been

completed (Ready Signal). A Low signal on this pin signals that a data

transfer operation is in progress. The pin goes tristate after completion of

a bus cycle.

Serial Mode

If CLKE is High, SDO is valid on the rising edge of SCLK. If CLKE is Low,

SDO is valid on the falling edge of SCLK. This pin goes into high Z state

during a serial port write access.

Table 1.

Pin Assignments and Signal Descriptions (Continued)

Ball #

PBGA

Pin #

LQFP

Symbol

I/O1

Description

1. DI: Digital Input; DO: Digital Output; DI/O: Digital Bidirectional Port; AI: Analog Input; AO: Analog Output S: Power Supply;

N.C.: Not Connected.

2. N/C means “Not Connected”

LXT386LE Datasheet(PDF) 17 Page - Intel Corporation

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