
ML674001 Series/ML675001 Series User’s Manual
Table of Contents
vii
17.3.5
Transmit Interrupts ............................................................................................................................. 17-13
17.4 Important Usage Notes ............................................................................................................................. 17-14
Chapter 18 UART with FIFO(16byte)
18.1 Overview..................................................................................................................................................... 18-1
18.1.1
Components .......................................................................................................................................... 18-2
18.1.2
Pins ....................................................................................................................................................... 18-2
18.1.3
Register List.......................................................................................................................................... 18-3
18.2 Register Descriptions.................................................................................................................................. 18-4
18.2.1
Receiver Buffer Register (UARTRBR) ................................................................................................ 18-4
18.2.2
Transmitter Holding Register (UARTTHR) ......................................................................................... 18-5
18.2.3
Interrupt Enable Register (UARTIER) ................................................................................................. 18-6
18.2.4
Interrupt Identification Register (UARTIIR) ........................................................................................ 18-7
18.2.5
FIFO Control Register (UARTFCR) .................................................................................................... 18-9
18.2.6
Line Control Register (UARTLCR) ................................................................................................... 18-11
18.2.7
Modem Control Register (UARTMCR) ............................................................................................. 18-13
18.2.8
Line Status Register (UARTLSR) ...................................................................................................... 18-15
18.2.9
Modem Status Register (UARTMSR) ................................................................................................ 18-18
18.2.10 Scratch Register (UARTSCR) ............................................................................................................ 18-20
18.2.11 Divisor Latch (LSB) (UARTDLL) ..................................................................................................... 18-21
18.2.12 Divisor Latch (MSB) (UARTDLM) ................................................................................................... 18-22
18.3 Description of Operation .......................................................................................................................... 18-23
18.3.1
Transmitting Data ............................................................................................................................... 18-23
18.3.2
Receiving Data.................................................................................................................................... 18-24
18.3.3
Generating Baud Rate Clock .............................................................................................................. 18-26
18.3.4
Buffered Operation ............................................................................................................................. 18-27
18.3.5
Queue Polled Mode ............................................................................................................................ 18-28
18.3.6
Error Status ......................................................................................................................................... 18-29
18.3.7
Setup Procedure .................................................................................................................................. 18-30
Chapter 19 Synchronous SIO
19.1 Overview ...................................................................................................................................................... 19-1
19.1.1
Configuration ........................................................................................................................................ 19-1
19.1.2
List of Pins............................................................................................................................................ 19-2
19.1.3
List of Registers .................................................................................................................................... 19-2
19.2 Registers ....................................................................................................................................................... 19-3
19.2.1
Synchronous SIO Transmit/Receive Buffer Register (SSIOBUF) ....................................................... 19-3
19.2.2
Synchronous SIO Status Register (SSIOST) ........................................................................................ 19-4
19.2.3
Synchronous SIO Interrupt Request Register (SSIOINT) .................................................................... 19-5
19.2.4
Synchronous SIO Interrupt Enable Register (SSIOINTEN)................................................................. 19-6
19.2.5
Synchronous SIO Control Register (SSIOCON) .................................................................................. 19-7
19.2.6
Synchronous SIO Test Control Register (SSIOTSCON)...................................................................... 19-8
19.3 Operations..................................................................................................................................................... 19-9
19.3.1
Master Mode/Slave Mode..................................................................................................................... 19-9
19.3.2
Transmit Operation ............................................................................................................................... 19-9
19.3.3
Receive Operation............................................................................................................................... 19-11
19.3.4
Interrupt Signal ................................................................................................................................... 19-13
Chapter 20 I2C
20.1 Overview ...................................................................................................................................................... 20-1
20.1.1
Configuration ........................................................................................................................................ 20-1
20.1.2
List of Pins............................................................................................................................................ 20-2
20.1.3
List of Registers .................................................................................................................................... 20-2
20.2 Registers ....................................................................................................................................................... 20-3