w83637hg Winbond Electronics Corp America, w83637hg Datasheet - Page 23

• Manufacturer Part Number: w83637hg
• Description: Winbond Lpc I/o Lpc I/o
• Manufacturer: Winbond Electronics Corp America

Serial Port Interface, continued
5.5 KBC Interface
DTRB#
SINA
SINB
SOUTA
PENKBC
SOUTB
PEN48
DCDA#
DCDB#
RIA#
RIB#
GA20M
KBRST
KCLK
KDAT
MCLK
MDAT
SYMBOL
SYMBOL
PIN
81
53
82
54
83
56
84
57
85
PIN
59
60
62
63
65
66
I/OD
I/OD
I/OD
I/OD
IN
IN
O
O
O
I/O
IN
IN
IN
O
O
I/O
8c
8c
8c
cd
cd
16t
16t
t
t
t
16cs
16cs
16cs
16cs
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.
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 (PENKBC). A 4.7 kΩ resistor is recommended if intends to
pull up. (enable KBC)
UART B Serial Output. During power-on reset, this pin is pulled
down internally and is defined as PEN48, which provides the
power-on value for CR24 bit 6 (EN48).
recommended if intends to pull up.
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.
Gate A20 output. This pin is high after system reset. (KBC P21)
Keyboard reset. This pin is high after system reset. (KBC P20)
Keyboard Clock.
Keyboard Data.
PS2 Mouse Clock.
PS2 Mouse Data.
- 18 -
FUNCTION
FUNCTION
Publication Release Date: March, 2006
W83637HF/HG
A 4.7 kΩ resistor is
Revision 1.6