Z8F082A28100KIT ZILOG [Zilog, Inc.], Z8F082A28100KIT Datasheet - Page 105
Z8F082A28100KIT
Manufacturer Part Number
Z8F082A28100KIT
Description
Z8 Encore XP-R F08xA Series with eXtended Peripherals
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z8F082A28100KIT.pdf
(244 pages)
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PS024705-0405
Transmitting Data using the Interrupt-Driven Method
6. Check the TDRE bit in the UART Status 0 register to determine if the Transmit Data
7. Write the UART Control 1 register to select the outgoing address bit.
8. Set the Multiprocessor Bit Transmitter (MPBT) if sending an address byte, clear it if
9. Write the data byte to the UART Transmit Data register. The transmitter automatically
10. Make any changes to the Multiprocessor Bit Transmitter (
11. To transmit additional bytes, return to Step 5.
The UART Transmitter interrupt indicates the availability of the Transmit Data register to
accept new data for transmission. Follow these steps to configure the UART for interrupt-
driven data transmission:
1. Write to the UART Baud Rate High and Low Byte registers to set the appropriate baud
2. Enable the 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 UART Transmitter interrupt and
5. Write to the UART Control 1 register to enable MULTIPROCESSOR (9-bit) mode
6. Set the MULTIPROCESSOR Mode Select (MPEN) to Enable MULTIPROCESSOR
7. Write to the UART Control 0 register to:
8. Execute an EI instruction to enable interrupts.
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.
sending a data byte.
transfers the data to the Transmit Shift register and transmits the data.
and MULTIPROCESSOR mode is enabled,.
rate.
alternate function operation.
set the acceptable priority.
functions, if MULTIPROCESSOR mode is appropriate.
mode.
–
–
–
Set the transmit enable bit (TEN) to enable the UART for data transmission
Enable parity, if appropriate and if MULTIPROCESSOR mode is not enabled, and
select either even or odd parity.
Set or clear CTSE to enable or disable control from the remote receiver using the
CTS pin.
P R E L I M I N A R Y
Z8 Encore! XP
MPBT
Product Specification
) value, if appropriate
®
F08xA Seriess
UART
87
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