W83L517D_05 Datasheet, PDF (18/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
Serial Port Interface, continued
SYMBOL
PIN
DTRA#
43
I/O
I/O_8t
(PNPCSV#)
SINA
SOUTA
44
IN_t
45
I/O₈
FUNCTION
UART A Data Terminal Ready. An active low signal informs
the modem or data set that the controller is ready to
communicate.
During power-on reset, this pin is pulled down internally and
is defined as _PNPCSV#, which provides the power-on value
for CR24 bit 0 (PNPCSV#). A 4.7 kΩ is recommended if
intends to pull up. (clear the default value of FDC, UARTs,
and PRT)
Serial Input. It is used to receive serial data through the
communication link.
UART A Serial Output. It is used to transmit serial data out to
the communication link.
(PEN48)
IN_t
During power-on reset, this pin is pulled down internally and
is defined as PEN48 and the clock input (Pin 6) should be
48MHz, which provides the power-on value for CRxx bit x
(EN48). A 4.7 kΩ resistor is recommended if intends to pull
up and 24MHz input is slected.
DCDA#
46
RIA#
47
IRRX
48
IRTX
49
IRSEL0_ IRRXH 50
IN_t
IN_t
INts
OUT12t
I/O12t
Data Carrier Detect. An active low signal indicates the
modem or data set has detected a data carrier.
Ring Indicator. An active low signal indicates that a ring
signal is being received from the modem or data set.
Alternate Function Input: Infrared Receiver input.(For
W83L517D only)
Alternate Function Output: Infrared Transmitter Output. (For
W83L517D only)
After reset, this pin is Infrared Control Signal 0 , this signal is
output and selecte FIR or SIR mode for IR module . This pin
can be set as IRRXH , the signal is high speed infrared
receiver input . (For W83L517D only)
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