EZ80F91MCU Datasheet, PDF (217/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
198
Table 104. Parity Select Definition for Multidrop Communications
Multidrop
Mode
Even Parity
Select
Parity Type
0
0
odd
0
1
even
1
0
space
1
1*
mark
Note: *In Multidrop Mode, EPS resets to 0 after the
first character is sent.
UART Modem Control Register
This register is used to control and check the modem status. See Table 105.
Table 105. UART Modem Control Registers
(UART0_MCTL = 00C4h, UART1_MCTL = 00D4h)
Bit
7
6
Reset
0
0
CPU Access
R R/W
Note: R = Read Only; R/W = Read/Write.
5
0
R/W
4
0
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
0
R/W
Bit
Position
7
6
POLARITY
5
MDM
Value
0
0
1
0
1
Description
Reserved
TxD and RxD signals—Normal Polarity.
Invert Polarity of TxD and RxD signals.
Multidrop Mode disabled.
Multidrop Mode enabled. See Table 104 for parity select
definitions.
PS019209-0504
P R E L I M I N A R Y Universal Asynchronous Receiver/Transmitter