Z8 Encore! XP® F08xA Seriess
Product Specification
101
Table 66. UART Address Compare Register (U0ADDR)
BITS
7
6
5
4
3
2
1
0
COMP_ADDR
FIELD
RESET
R/W
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
F45H
ADDR
COMP_ADDR—Compare Address
This 8-bit value is compared to incoming address bytes.
UART Baud Rate High and Low Byte Registers
The UART Baud Rate High and Low Byte registers (Tables 67 and 68) combine to create
a 16-bit baud rate divisor value (BRG[15:0]) that sets the data transmission rate (baud
rate) of the UART.
Table 67. UART Baud Rate High Byte Register (U0BRH)
BITS
7
6
5
4
3
2
1
0
BRH
FIELD
RESET
R/W
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
F46H
ADDR
Table 68. UART Baud Rate Low Byte Register (U0BRL)
BITS
7
6
5
4
3
2
1
0
BRL
FIELD
RESET
R/W
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
F47H
ADDR
The UART data rate is calculated using the following equation:
System Clock Frequency (Hz)
----------------------------------------------------------------------------------------------
UART Baud Rate (bits/s) =
16 × UART Baud Rate Divisor Value
For a given UART data rate, calculate the integer baud rate divisor value using the follow-
ing equation:
PS024705-0405
P R E L I M I N A R Y
UART
ZILOG [ ZILOG, INC. ]
