Z8FMC04100 ZILOG [Zilog, Inc.], Z8FMC04100 Datasheet - Page 136

• Manufacturer Part Number: Z8FMC04100
• Description: Z8 Encore-R Motor Control Flash MCUs
• Manufacturer: ZILOG [Zilog, Inc.]

114
Z8 Encore!
Product Specification
LIN-UART
Transmitting Data using the Interrupt-Driven Method
®
Motor Control Flash MCUs
5. Check the TDRE bit in the LIN-UART Status 0 register to determine if the Transmit
6. If in MULTIPROCESSOR mode, write the LIN-UART Control 1 Register to select
7. Write the data byte to the LIN-UART Transmit Data Register. The transmitter auto-
8. If appropriate, and if MULTIPROCESSOR mode is enabled, make any changes to the
9. To transmit additional bytes, return to Step 5.
The LIN-UART Transmitter interrupt indicates the availability of the Transmit Data Reg-
ister to accept new data for transmission. Follow these steps to configure the LIN-UART
for interrupt-driven data transmission:
1. Write to the LIN-UART Baud Rate High and Low Byte registers to set the appropriate
2. Enable the LIN-UART pin functions by configuring the associated GPIO port pins for
3. Execute a DI instruction to disable interrupts.
4. Write to the Interrupt control registers to enable the LIN-UART Transmitter interrupt
5. If multiprocessor mode is appropriate, write to the LIN-UART Control 1 Register to
6. Write to the LIN-UART Control 0 Register to:
Data Register is empty (indicated by a 1). If empty, continue to Step 6. If the Transmit
Data Register is full (indicated by a 0), continue to monitor the TDRE bit until the
Transmit Data Register becomes available to receive new data.
the outgoing address bit.
Set the Multiprocessor Bit Transmitter (
sending a data byte.
matically transfers the data to the Transmit Shift register and transmits the data.
Multiprocessor Bit Transmitter (
baud rate.
alternate function operation.
and set the appropriate priority.
enable Multiprocessor (9-bit) mode functions.
Set the MULTIPROCESSOR Mode Select (MPEN) to Enable MULTIPROCESSOR
mode.
a. Set the transmit enable bit (
b. If multiprocessor mode is not enabled, enable parity, if appropriate, and select
c. Set or clear the CTSE bit to enable or disable control from the remote receiver via
either even or odd parity.
the CTS pin.
P R E L I M I N A R Y
TEN
MPBT
) to enable the LIN-UART for data transmission
) value.
MPBT
) if sending an address byte; clear it if
PS024604-1005