Sharp LH79524 User Manual page 481

UARTs
BIT
8
7
6:3
2
1
0
16-18
Table 16-23. UARTCR Fields
NAME
Transmit Section Enables the transmit section of the UART.
1 = Transmit section enabled. When the UART is disabled in the middle of
TXE
transmission, it completes the current character before stopping
0 = Transmit section not enabled
Loop Back Enable Places the UART into Loopback Mode.
LBE
1 = Loopback is enabled
0 = Loopback is disabled
Reserved Do not modify. When writing to this register, perform a
///
read-modified-write operation to this field.
IrDA SIR Low Power Mode This bit selects the IrDA SIR encoding mode.
When this bit field is cleared to 0, low-level bits are transmitted as an active
HIGH pulse with a width of 3/16th of the bit period. When this bit field is set to
1, low-level bits are transmitted with a shorter pulse width. Enabling this bit
SIRLP
lowers power consumption, but may reduce the optical transmission distance.
1 = IrDA Low Power mode enabled
0 = IrDA Low Power mode disabled
SIR Enable This bit can be programmed to enable or disable the SIR
function. When the SIR ENDEC is enabled, data is transmitted and received
on the UARTIRRX and UARTIRTX pins. This data is converted to the SIR
SIREN
format by the SIR ENDEC.
1 = SIR Enabled
0 = SIR Disabled
UART Enable Enables the UART.
1 = Enables the UART. When the UART is disabled in the middle of
UARTEN
transmission or reception, it completes the current character before
stopping.
0 = UART disabled
DESCRIPTION
Version 1.0
LH79524/LH79525 User's Guide