Enhanced Serial Communication Interface (eSCI)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
Freescale Semiconductor
24-5
Preliminary
PE
Parity Enable. Enables the parity function. When enabled, the parity function inserts a parity bit in the most significant
bit position of the transmitted word. During reception, the received parity bit will be verified in the most significant bit
position. The received parity bit will not be masked out.
0 Parity function disabled
1 Parity function enabled
PT
Parity Type. Determines whether the eSCI generates and checks for even parity or odd parity. With even parity, an
even number of 1s clears the parity bit and an odd number of 1s sets the parity bit. With odd parity, an odd number
of 1s clears the parity bit and an even number of 1s sets the parity bit.
0 Even parity
1 Odd parity
TIE
Transmitter Interrupt Enable. Enables the transmit data register empty flag ESCIx_SR[TDRE] to generate interrupt
requests. The interrupt is suppressed in TX DMA mode.
0 TDRE interrupt requests disabled
1 TDRE interrupt requests enabled
TCIE
Transmission Complete Interrupt Enable. Enables the transmission complete flag ESCIx_SR[TC] to generate
interrupt requests. The interrupt is suppressed in TX DMA mode.
0 TC interrupt requests disabled
1 TC interrupt requests enabled
RIE
Receiver Full Interrupt Enable. Enables the receive data register full flag ESCIx_SR[RDRF] and the overrun flag
ESCIx_SR[OR] to generate interrupt requests. The interrupt is suppressed in RX DMA mode.
0 RDRF and OR interrupt requests disabled
1 RDRF and OR interrupt requests enabled
ILIE
Idle Line Interrupt Enable. Enables the idle line flag ESCIx_SR[IDLE] to generate interrupt requests.
0 IDLE interrupt requests disabled
1 IDLE interrupt requests enabled
TE
Transmitter Enable. Enables the eSCI transmitter and configures the TXD pin as being controlled by the eSCI. The
TE bit can be used to queue an idle preamble.
0 Transmitter disabled
1 Transmitter enabled
RE
Receiver Enable. Enables the eSCI receiver.
0 Receiver disabled
1 Receiver enabled
RWU
Receiver wakeup. Standby state.
0 Normal operation
1 RWU enables the wakeup function and inhibits further receiver interrupt requests. Normally, hardware wakes the
receiver by automatically clearing RWU.
SBK
Send Break. Toggling SBK sends one break character (see the description of ESCIx_CR2[BRK13] for break
character length). Toggling implies clearing the SBK bit before the break character has finished transmitting. As long
as SBK is set, the transmitter continues to send complete break characters.
0 No break characters
1 Transmit break characters
Table 24-2. ESCIx_CR1 Field Descriptions (continued)
Field
Description