GPL12A datasheet(10/19 Pages) GENERALPLUS

10 / 19 page

GPL12A

Proprietary & Confidential

Jul. 27, 2011

Version: 1.4

5.8. IR Output Control

In IR-application, we must use PLL/32768 Hz crystal combination

of clock sources to get PLL Freq = 4.85MHz.

Next, the 4.85MHz

PLL Freq is sent to the duty controller to generate 37.9KHz and

1/8 duty resolution IR-output pulse.

The 37.9KHz IR-output

pulse is delivered to Port IOA7 and controlled by software or

Timer-overflow.

5.9. Mask Options

Description

Comment

HCKOPT

0: ROSC; 1: PLL

LCKOPT

0: 32768 Hz oscillator

1 32768 Hz crystal

LVROFF

0: LVR enable

1: LVR disable

LVRLVL

0: 1.9V

1: 2.2V

5.10. Default Status of PINs

IOA (IOA0 ~ IOA7) => Input with pull-low

INB (IOB0 ~ IOB7) => Input with pull-low

LCD => OFF (Common = Low & Segment = Low)

CUP3_INB6 = INB6

CUP4_INB7 = INB7

V3_INB5 = INB5

COM4_SEG31 = SEG31

COM5_SEG30 = SEG30

COM6_SEG29 = SEG29

COM7_SEG28 = SEG28

INB3 (SEG30/COM9) = INB3

INB4 (SEG31/COM10) = INB4

IOA4 (COM11) = IOA4

IOA5 (COM8) = IOA5

OSCPLL = ROSC (HCKOPT Mask-option=Low)

X32I/R32I = X32K (LCKOPT Mask-option=Low)

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