Samsung 8-Bit Bedienungsanleitung PDF herunterladen (Seite 88)

CONTROL REGISTERS S3C9228/P9228

4-36

TACON — Timer 1/A Control Register BBH

Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0

RESETRESET Value

0 0 0 0 0 0 0 –

Read/Write

R/W R/W R/W R/W R/W R/W R/W –

.7 Timer 1 Mode Selection Bit

0 Two 8-bit timers mode (Timer A/B)

1 One 16-bit timer mode (Timer 1)

.6-.4 Timer 1/A Clock Selection Bits

0 0 0 fxx/512

0 0 1 fxx/256

0 1 0 fxx/64

0 1 1 fxx/8

1 0 0 fxx (system clock)

1 0 1 fxt (sub clock)

1 1 0 T1CLK (external clock)

1 1 1 Not available

.3 Timer 1/A Counter Clear Bit

0 No effect

1 Clear the timer 1/A counter (when write)

.2 Timer 1/A Counter Enable Bit

0 Disable counting operation

1 Enable counting operation

.1 Timer 1/A Interrupt Enable Bit

0 Disable interrupt

1 Enable interrupt

.0 Bit 0

Not used for S3C9228/P9228

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 461 462

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