Samsung 8-Bit Uživatelský manuál stáhnout pdf (Strana 74)

CONTROL REGISTERS S3C9228/P9228

4-22

P2CON – Port 2 Control Register F3H

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

RESETRESET Value

0 0 0 0 0 0 0 0

Read/Write

R/W R/W R/W R/W R/W R/W R/W R/W

.7-.6 P2.3 Configuration Bits

0 0 Schmitt trigger input

0 1 Push-pull output

1 0 N-channel open-drain output

1 1 Not available

.5-.4 P2.2/SI Configuration Bits

0 0 Schmitt trigger input (SI)

0 1 Push-pull output

1 0 N-channel open-drain output

1 1 Not available

.3-.2 P2.1/SO Configuration Bits

0 0 Schmitt trigger input

0 1 Push-pull output

1 0 N-channel open-drain output

1 1 Alternative function (SO out)

.1-.0 P2.0/SCK Configuration Bits

0 0 Schmitt trigger input (SCK in)

0 1 Push-pull output

1 0 N-channel open-drain output

1 1 Alternative function (SCK out)

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 461 462

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