HCS361-IP datasheet(11/24 Pages) MICROCHIP

部件名	HCS361-IP

功能描述	KEELOQ CODE HOPPING ENCODER

PDF	24 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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11 / 24 page

HCS361

Preliminary

DS40146C-page 11

FIGURE 4-2:

TRANSMISSION FORMAT—VPWM = 1

FIGURE 4-3:

CODE WORD ORGANIZATION (RIGHT-MOST BIT IS CLOCKED-OUT FIRST)

Guard

Time

SPM=1

SPM=0

Preamble

Header

Encrypted

Data

Fixed Code

Data

LOGIC "0"

CODE WORD:

TOTAL TRANSMISSION:

WAKEUP (OPTION)

Preamble Sync

Encrypt

Fixed

Guard

x84

Dead Time

1 CODE WORD

Preamble Sync Encrypt

LOGIC "1"

TRANSITION

•

Code Word

LSB

MSB

Fixed Code Data

Encrypted Code Data

67 bits

of Data

Transmitted

MSB

LSB

CRC

(2 bit)

VLOW

(1 bit)

Button

Status

(4 bits)

28-bit

Serial Number

Button

Status

(4 bits)

Discrimination

bits

(12 bits)

16-bit

Synch Value

CRC

(2 bit)

VLOW

bit

Serial Number and

Button Status (32 bits)

32 bits of Encrypted Data

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