Z8F042ASJ020EG2156 Datasheet, PDF (131/280 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
116
Table 67. UART Transmit Data Register (U0TXD)
Bit
7
6
5
4
3
2
1
0
Field
TXD
RESET
X
X
X
X
X
X
X
X
R/W
W
W
W
W
W
W
W
W
Address
F40H
Note: X = Undefined.
Bit
[7:0]
TXD
Description
Transmit Data
UART transmitter data byte to be shifted out through the TXDx pin.
UART Receive Data Register
Data bytes received through the RXDx pin are stored in the UART Receive Data
(UxRXD) Register, shown in Table 68. The read-only UART Receive Data Register
shares a Register File address with the Write-only UART Transmit Data Register.
Table 68. UART Receive Data Register (U0RXD)
Bit
7
6
5
4
3
2
1
0
Field
RXD
RESET
X
X
X
X
X
X
X
X
R/W
R
R
R
R
R
R
R
R
Address
F40H
Note: X = Undefined.
Bit
[7:0]
RXD
Description
Receive Data
UART receiver data byte from the RXDx pin.
UART Address Compare Register
The UART Address Compare (UxADDR) Register stores the multi-node network address
of the UART (see Table 69). When the MPMD[1] bit of UART Control Register 0 is set,
all incoming address bytes are compared to the value stored in the Address Compare Reg-
ister. Receive interrupts and RDA assertions only occur in the event of a match.
PS022828-0413
PRELIMINARY
UART Control Register Definitions