LH77790B User’s Guide
Table of Contents
vii
CPMU Registers.........................................................................................................6-5
Peripheral Clock Select Register (PCSR) ..............................................................6-5
UART0 Clock Control Register (U0CCR)...............................................................6-6
UART1 Clock Control Register (U1CCR)...............................................................6-7
UART2 Clock Control Register (U2CCR)...............................................................6-8
Counter/Timer0 Clock Control Register (CT0CCR) ...............................................6-9
Counter/Timer1 Clock Control Register (CT1CCR) .............................................6-10
Counter/Timer2 Clock Control Register (CT2CCR) .............................................6-11
Core Clock Control Register (CCCR)...................................................................6-12
Chapter 7 UART
Introduction.................................................................................................................7-1
Features.....................................................................................................................7-1
Block Diagram............................................................................................................7-2
Upon Reset ................................................................................................................7-2
General Operation......................................................................................................7-2
Baud Generator......................................................................................................7-2
Transmitter .............................................................................................................7-3
Receiver.................................................................................................................7-3
Modem Controller...................................................................................................7-3
Modem Signals.......................................................................................................7-3
External Interface.......................................................................................................7-4
Register Map..............................................................................................................7-4
UARTs Registers........................................................................................................7-6
Register Description...................................................................................................7-7
Receiver Buffer Register (RBR) .............................................................................7-7
Transmit Holding Register (THR)...........................................................................7-7
Interrupt Enable Register (IER)..............................................................................7-7
Interrupt Identification Register (IIR) ......................................................................7-8
Line Control Register (LCR)...................................................................................7-9
Modem Control Register (MCR)...........................................................................7-10
Line Status Register (LSR)...................................................................................7-11
Modem Status Register (MSR) ............................................................................7-12
Scratch Pad Register (SCR) ................................................................................7-12
Divisor Latches (DLL, DLM) - Read/Write............................................................7-13
UARTs Input Clock...................................................................................................7-14
Chapter 8 Serial Infrared (SIR) Interface
Introduction.................................................................................................................8-1
Features.....................................................................................................................8-1
Block Diagram............................................................................................................8-2
External Interface.......................................................................................................8-2
Register Map..............................................................................................................8-2
General Operation......................................................................................................8-3
IrDA Mode ..............................................................................................................8-3
DASK Mode............................................................................................................8-4
UART Mode............................................................................................................8-4