GMS81032 datasheet(36/101 Pages) HYNIX

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T0S

T1S

T2S

ECS

INT2S

INT1S

<00C9H>

PMR1

bit

initial value

R/W

3.2.5 Port R1 Mode Register (PMR1)

R1 Port Mode Register(PMR1) is 8-bit register, and can assign the selection mode for

each bit. When set as¡È0¡È, corresponding bit of PMR1 acts as port R1 selection mode,

and when set as¡È1¡È, it becomes function selection mode.

BIT NAME

T0S

PMR1

Selection Mode

Remarks

Table 3.3 Selection Mode of PMR1

R17 Sel(I/O)

T0 Sel (Output)

Output Port of Timer0

T1S

R16 Sel (I/O)

T1 Sel (Output)

Output Port of Timer1

T2S

R15 Sel (I/O)

T2 Sel (Output)

Output Port of Timer2

ECS

R14 Sel (I/O)

EC Sel (Input)

Input Port of Timer0 Event Input

INT2S

R12 sel (I/O)

INT2 Sel (Input)

Input Port of Timer0 Input capture

INT1S

R11 Sel (I/O)

INT1 Sel (Input)

PMR1 is write-only register and initialized as ¡È 00H¡È in reset state. Therefore,

becomes Port selection mode. Port R1 can be I/O port by manipulating each R1DD bit,

if corresponding PMR1 bit is selected as ¡È0¡È.

Chapter 3. I/O PORT

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