7.9
CHAPTER 8
8.1
8.2
8.3
8.3.1
8.3.2
8.3.3
8.3.4
8.4
8.5
8.6
8.7
8.8
8.9
8-BIT SERIAL I/O ..................................................................................... 169
9.1
Overview of 8-bit Serial I/O ............................................................................................................... 170
9.2
9.3
Structure of 8-bit Serial I/O ............................................................................................................... 173
9.3.1
Serial Mode Register (SMR) ........................................................................................................ 176
9.3.2
Serial Data Register (SDR) .......................................................................................................... 179
9.4
8-bit Serial I/O Interrupts ................................................................................................................... 180
9.5
Operation of Serial Output ............................................................................................................... 181
9.6
Operation of Serial Input ................................................................................................................... 183
9.7
9.8
9.9
CHAPTER 10 UART ........................................................................................................ 193
10.1 Overview of UART ............................................................................................................................ 194
10.2 Structure of UART ............................................................................................................................ 199
10.3 UART Pins ........................................................................................................................................ 202
10.4 UART Registers ................................................................................................................................ 204
10.5 UART Interrupts ................................................................................................................................ 215
10.6 Operation of UART ........................................................................................................................... 216
ix