EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 213

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

PS019209-0504
Table 100. UART Interrupt Status Codes
Bit
Position
[3:1]
INSTS
0
INTBIT
INSTS
Value
011
010
110
101
001
000
Priority
Highest
Second
Third
Fourth
Fifth
Lowest
Value
000–
110
0
1
Interrupt Type
Receiver Line Status
Receive Data Ready or Trigger Level
Character Time-out
Transmission Complete
Transmit Buffer Empty
Modem Status
Description
Interrupt Status Code
The code indicated in these three bits is valid only if INTBIT is
1. If two internal interrupt sources are active and their
respective enable bits are High, only the higher priority
interrupt is seen by the application. The lower-priority interrupt
code is indicated only after the higher-priority interrupt is
serviced.
There is an active interrupt source within the UART.
There is not an active interrupt source within the UART.
P R E L I M I N A R Y
Table 100
lists the interrupt status codes.
Universal Asynchronous Receiver/Transmitter
Product Specification
eZ80F91 MCU
194