Intel 386 User Manual page 19

Intel386™ EX MICROPROCESSOR USER'S MANUAL
Figure
10-7 Mode 1 - Writing a New Count.................................................................................10-10
10-8 Mode 2 - Basic Operation ........................................................................................10-11
10-9 Mode 2 - Disabling the Count ..................................................................................10-11
10-10 Mode 2 - Writing a New Count.................................................................................10-12
10-11 Mode 3 - Basic Operation (Even Count)..................................................................10-13
10-12 Mode 3 - Basic Operation (Odd Count) ...................................................................10-14
10-13 Mode 3 - Disabling the Count ..................................................................................10-14
10-14 Mode 3 - Writing a New Count (With a Trigger).......................................................10-15
10-15 Mode 3 - Writing a New Count (Without a Trigger)..................................................10-15
10-16 Mode 4 - Basic Operation ........................................................................................10-16
10-17 Mode 4 - Disabling the Count ..................................................................................10-17
10-18 Mode 4 - Writing a New Count.................................................................................10-17
10-19 Mode 5 - Basic Operation ........................................................................................10-18
10-20 Mode 5 - Retriggering the Strobe ............................................................................10-19
10-21 Mode 5 - Writing a New Count Value ......................................................................10-19
10-22 Timer Configuration Register (TMRCFG).................................................................10-21
10-23 Port 3 Configuration Register (P3CFG)....................................................................10-22
10-24 Pin Configuration Register (PINCFG).......................................................................10-23
10-25 Timer Control Register (TMRCON - Control Word Format).....................................10-25
10-26 Timer n Register (TMR n - Write Format) .................................................................10-26
10-27 Timer Control Register (TMRCON - Counter-latch Format) ....................................10-28
10-28 Timer n Register (TMR n - Read Format).................................................................10-29
10-29 Timer Control Register (TMRCON - Read-back Format) ........................................10-30
10-30 Timer n Register (TMR n - Status Format) ...............................................................10-32
11-1 Serial I/O Unit 1 Configuration....................................................................................11-2
SIO n Baud-rate Generator Clock Sources .................................................................11-4
11-2
SIO n Transmitter ........................................................................................................11-7
11-3
SIO n Data Transmission Process Flow......................................................................11-8
11-4
SIO n Receiver ............................................................................................................11-9
11-5
SIO n Data Reception Process Flow .........................................................................11-11
11-6
11-7 Pin Configuration Register (PINCFG).......................................................................11-17
11-8 Port 1 Configuration Register (P1CFG)....................................................................11-18
11-9 Port 2 Configuration Register (P2CFG)....................................................................11-19
11-10 Port 3 Configuration Register (P3CFG)....................................................................11-20
11-11 SIO and SSIO Configuration Register (SIOCFG).....................................................11-21
11-12 Divisor Latch Registers (DLL n and DLH n ) ...............................................................11-22
11-13 Transmit Buffer Register (TBR n ) ..............................................................................11-23
Receive Buffer Register (RBR n )...............................................................................11-24
11-14
Serial Line Control Register (LCR n ) .........................................................................11-25
11-15
Serial Line Status Register (LSR n )...........................................................................11-26
11-16
Interrupt Enable Register (IER n ) ..............................................................................11-27
11-17
Interrupt ID Register (IIR n ) .......................................................................................11-28
11-18
11-19 Modem Control Signals - Diagnostic Mode Connections ........................................11-29
11-20 Modem Control Signals - Internal Connections .......................................................11-29
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FIGURES
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