Z8 Encore! XP® 4K Series
Product Specification
106
UART Address Compare Register
The UART Address Compare (UxADDR) register stores the multi-node network address
of the UART (see Table 68). 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.
Table 68. 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 (UxBRH) and Low Byte (UxBRL) registers (Tables 69 and
70) combine to create a 16-bit baud rate divisor value (BRG[15:0]) that sets the data trans-
mission rate (baud rate) of the UART.
Table 69. 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 70. 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
PS022815-0206
UART
ZILOG [ ZILOG, INC. ]
