W83627THF_06 Datasheet, PDF (20/142 Pages) Winbond – Winbond LPC I/O

W83627THF/W83627THG
3.4 Serial Port Interface
SYMBOL PIN
CTSA#
49
CTSB#
78
DSRA#
50
DSRB#
79
RTSA#
HEFRAS
51
RTSB#
80
DTRA#
PNPCSV# ⁵²
DTRB#
81
SINA
53
SINB
82
SOUTA
PENKBC
54
I/O
IN_t
IN_t
I/O_12t
IN_t
IN_t
I/O_8t
I/O_8t
I/O_8t
I/O_8t
IN_t
IN_tt
I/O8t
FUNCTION
Clear To Send. It is the modem control input.
The function of these pins can be tested by reading bit 4 of the
handshake status register.
Clear To Send. It is the modem control input.
The function of these pins can be tested by reading bit 4 of the
handshake status register.
Data Set Ready. An active low signal indicates the modem or
data set is ready to establish a communication link and transfer
data to the UART.
Data Set Ready. An active low signal indicates the modem or
data set is ready to establish a communication link and transfer
data to the UART.
UART A Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
During power-on reset, this pin is pulled down internally and is
defined as HEFRAS, which provides the power-on value for CR26
bit 6 (HEFRAS). A 4.7 kΩ is recommended if intends to pull up.
(select 4EH as configuration I/O port′s address)
UART B Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
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, PRT, Game port
and MIDI port)
UART B Data Terminal Ready. An active low signal informs the
modem or data set that controller is ready to communicate.
Serial Input. It is used to receive serial data through the
communication link.
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.
During power-on reset, this pin is pulled down internally and is
defined as PENKBC, which provides the power-on value for CR24
bit 2 (ENKBC). A 4.7 kΩ resistor is recommended if intends to pull
up. (enable KBC)
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Publication Release Date: September 26, 2006
Revision 1.2