STLC5412P データシートの表示（PDF） - STMicroelectronics
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STLC5412P Datasheet PDF : 74 Pages
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STLC5412
PIN FUNCTIONS (specific GCI mode)
Pin
Name
In/Out
Description
22
RFS
In
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.
25
AIS
In
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.
26
RES
In
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 200µs.
27
M0
In
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
MW(pin) = 1
MW(pin) = 0
Function or In/Out conditions
CMS(cr1) = 1
CMS(cr1) = 0
MO(pin) = 1
CONF2(pin) = 1
CONF2(pin) = 0
MO(pin) = 0
CONF1(pin) = 1
CONF1(pin) = 0
Function
FSa
FSa
FSa
FSa
FSa
FSa
In/Ou t
Out
In
Out
In
Out
In
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