HCS370IP datasheet(10/36 Pages) MICROCHIP

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HCS370

DS41111D-page 10

Preliminary

2002 Microchip Technology Inc.

3.1

Dual Encoder Operation

The HCS370 contains two transmitter configurations

with separate serial numbers, encoder keys, discrimi-

nation values, syncronization counters, and seed val-

ues. The code word is calculated using one of two

possible encoder configurations. Most options for code

word and modulation formats can be different from

Encoder 1 and Encoder 2. However, LED and RF

transmitter options have to be the same. The SHIFT

input pin is used to select between the encoder config-

urations. A low on the SHIFT pin will select Encoder 1

and a high will select Encoder 2.

Symbol

Address

16:Bits

Description(1)

Reference

Section

WAKE

3F: ---- --10

Wake-up(1)

Value

4.1

No Wake-up

75 ms 50%

50 ms 33.3%

100 ms 16.7%

CNTSEL

3F: ---- -2--

Counter Select

16 bits = 0

20 bits = 1

3.2.1

VLOWL

3F: ---- 3---

Low Voltage Latch Enable

Disable = 0

Enable = 1

3.2.3.1

VLOWSEL

3F: ---4 ----

Low Voltage Trip Point Select(2)

2.2 V = 0

3.2V = 1

3.2.3.1

PLLSEL

3F: --5- ----

PLL Interface Select

ASK = 0

FSK = 1

5.2

MTX

3D: ---- --10

Minimum Code Words

Value

2.0

SOEN

3D: ---- 3---

SLEEP Output Enable

Disable = 0

Enable = 1

5.4

WAIT

3D: ---- -2--

Wait for Step-Up Regulator

Disable = 0

Enable = 1

5.2, 5.4

TSEL

3D: --54 ----

Time-out Select(1)

Value

Time(s)

2.0

0.8

3.2

12.8

25.6

Note 1:

All Timing values vary ±10%.

2: Voltage thresholds are ±150 mV.

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