STLC5412FN datasheet(9/74 Pages) STMICROELECTRONICS

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PIN FUNCTIONS (specific GCI mode)

Name

In/Out

Description

RFS

Remote febe select:

When tied to 0 the remote febe is not transferred. When tied to 1 febe is

transparently reported. See figure 10.

SFSx

In Out

Tx Super frame synchronization. In LT mode this pin is an input giving the Tx

Super Frame Synchronization if SFS = 0 in CR2. It becomes an output if SFS

= 1 with ISW free running on the line. In NT mode this pin is always an output

giving the Tx Super Frame position. If DECT mode is selected (DECT = 1 in

CR7) this pin provide the DECT synchronization pulse at each validated

reception of the DECT eoc message.

AIS

Analog interface select for all auto mode configurations

SFSr

Out

Rx Super frame synchronization. The rising edge of SFSr indicates the

beginning of the received superframe on the line. UID provides this output

only when ESFR bit in CR4 register is to 1 and LT/NT12 or NT/TE

configuration is done.

LSD

Out

Line Signal Detect output (default configuration): This pin is an open drain

output which is normally in the high impedance state but pulls low when the

device previously in the power down state receives a wake-up by Tone from

the line. This signal is intended to be used to wake-up a micro-controller

from a low power idle mode. The LSD output goes back in the high

impedance state when the device is powered up.

RES

Reset input pin with internal pull-up resistor. When pulled low, all registers

of the UID are reset to their default values. UID is configured according to

configuration inputs bias excluding MW input which must be maintained at

the 0 volt. minimum recommended pulse length is 200

µs.

Configuration input pin. When pulled low, GCI channel assigner is selected

(channel number defined by inputs S0, S1, S2). When pulled high, UID is

configured by pins CONF1 and CONF2.

MULTIPLE FUNCTION PIN DESCRIPTION

Pin 6: FSa

Function or In/Out conditions

Function

In/Ou t

MW(pin) = 1

CMS(cr1) = 1

FSa

Out

CMS(cr1) = 0

FSa

MW(pin) = 0

MO(pin) = 1

CONF2(pin) = 1

FSa

Out

CONF2(pin) = 0

CONF1(pin) = 1

FSa

CONF1(pin) = 0

FSa

Out

MO(pin) = 0

FSa

STLC5412

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STLC5412FN 数据表(PDF) 9 Page - STMicroelectronics

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