HT9480 datasheet(35/57 Pages) HOLTEK

номер детали	HT9480

подробное описание детали	Pager Controller

PDF	57 Pages

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производитель	HOLTEK [Holtek Semiconductor Inc]

домашняя страница	http://www.holtek.com

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Baud rate selection bits (SPF12, SPF13, SPF14)

SPF12

SPF13

SPF14

Connected Crystal (Hz)

Baud Rate (Hz)

32768

512

76.8k

512

76.8k

1200

76.8k

2400

153.6k

512

153.6k

1200

153.6k

2400

• SPF15

1: 4-bit burst error correction for address and

message code-word

0: 2-bit random error correction for address

and message code-word

• SPF16

1: Out-of-range Hold-off period according to

SPF06 and SPF07

0: Out-of-range Hold-off period is zero

regardless of SPF06 and SPF07

• SPF17

Tone generation frequency source selector

0: System clock

1: 32.768kHz

• SPF18

Tone generation frequency duty control

0: frequency duty cycle 1/2

1: frequency duty cycle 1/4

• SPF19

Non-inversion or inversion data input selection

1: Inversion input selected for DI from RF

Circuit, referring to DI

0: Non-inversion input selected for DI from

RF circuit

• SPF20

Message code-word packaging method

1: 4 bits packaging mode

0: 7 bits ASCII mode

• SPF21, SPF22, SPF23

Internal state status (for testing only)

HT9480

23th Feb ’98

HT9480 датащи(PDF) 35 Page - Holtek Semiconductor Inc

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