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S3C2500B
Table 13-3. Console UART Control Register Description (Continued)
Bit Number
[13:12]
Word Length (WL)
[14]
Infra-red mode (IR)
[28:15]
Reserved
[29]
Software Flow Control
Enable (SFEN)
[30]
Echo Mode Enable
(ECHO)
[31]
Reserved
Bit Name
This two bit word length value indicates the number of data bits to
be transmitted or received per frame:
00 = 5-bit
The S3C2500B Console UART block supports infra-red (IR)
transmit and receive operations. In IR mode, the transmit period is
pulsed at a rate of 3/16 that of the normal serial transmit rate
(when the transmit data value in the CUTXBUF register is zero).
To enable IR mode operation, you set CUCON[14] to '1'.
Otherwise, the Console UART operates in normal mode. In IR
receive mode, the receiver must detect the 3/16 pulsed period to
recognize a zero value in the receiver data register, CURXBUF, as
the IR receive data.
When this bit is '0', normal Console UART mode is selected. When
it is '1', infra-red TX/RX mode is selected.
NOTE: Changing this bit while transmitting cause one Tx data losing.
This bit determines whether Console UART select software flow
control or not. If you set CUCON[29] to '1', Console UART will act
in software flow control.
In this mode, you have to use Control Character register.
If you set CUCON[30] to '1', RX data is sent not only CURXBUF
but also TX port directly, so CUTXBUF data will not be transmitted.
Description
01 = 6-bit
10 = 7-bit
Because level of infra-red frame start bit and idle state of
normal frame are identically high.
SERIAL I/O (CONSOLE UART)
11 = 8-bit
13-5
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