Samsung S3C2501X User Manual page 49

PRODUCT OVERVIEW
Group Pin Name
CUART CURXD
(2)
CUTXD
HUART UCLK
(7)
HURXD/GPIO35
HUTXD/GPIO36
HUnDTR/GPIO37
HUnDSR/GPIO38
HUnRTS/GPIO39
1-24
Table 1-1. S3C2501X Signal Descriptions (Continue)
Pin Type
1 I
1 O
1 I
1 I/O
1 I/O
1 I/O
1 I/O
1 I/O
Pad Type
phis Console UART Receive Data.
phob8 Console UART Transmit Data.
Phis HUART External Clock
phbst8 HUART Receive Data.
HURXD is the HUART input signal for
receiving serial data.
General I/O Port
phbst8 HUART Transmit Data.
HUTXD is the HUART output signal for
transmitting serial data.
General I/O Port
phbst8 Not HUART Data Terminal Ready..
This output signals the host (or peripheral) that
HUART is ready to transmit or receive serial
data.
General I/O Port
phbst8 Not HUART Data Set Ready.
This input signals in the HUART that the
peripheral (or host) is ready to transmit or
receive serial data
General I/O Port
phbst8 Not request to send.
This pin output state goes Low or High
according to the transmit data is in Tx buffer
or Tx FIFO when hardware flow control bit
value set to one in HUART control register. If
Tx buffer or Tx FIFO has data to send, this pin
state goes low. If hardware flow control bit is
zero, this pin output can be controlled directly
by HUART control register.
General I/O Port
S3C2501X
Description