Z8F6421PM020SC Datasheet, PDF (158/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
138
SPI Baud Rate High and Low Byte Registers
The SPI Baud Rate High and Low Byte registers (Tables 67 and 68) combine to form a 16-
bit reload value, BRG[15:0], for the SPI Baud Rate Generator.
When congured as a general purpose timer, the SPI BRG interrupt interval is calculated
using the following equation:
SPI BRG Interrupt Interval (s) = System Clock Period (s) ×BRG[15:0] ].
Table 67. SPI Baud Rate High Byte Register (SPIBRH)
BITS
7
6
5
4
3
2
1
0
FIELD
BRH
RESET
R/W
ADDR
1
R/W
F66H
BRH = SPI Baud Rate High Byte
Most significant byte, BRG[15:8], of the SPI Baud Rate Generator’s reload value.
Table 68. SPI Baud Rate Low Byte Register (SPIBRL)
BITS
7
6
5
4
3
2
1
0
FIELD
BRL
RESET
1
R/W
R/W
ADDR
F67H
BRL = SPI Baud Rate Low Byte
Least significant byte, BRG[7:0], of the SPI Baud Rate Generator’s reload value.
PS019915-1005
Serial Peripheral Interface