ST7538Q datasheet(34/44 Pages) STMICROELECTRONICS

tên linh kiện	ST7538Q

Giải thích chi tiết về linh kiện	FSK power line transceiver

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Functional description

ST7538Q

34/44

Function

Value

Selection

Note

Default

Bit 20

Active only if Extended

Control Register is

enable (Bit 21=”1”)

Header

Length

8 bits

16 bits

Bit 21

Extended Register

enables Functions on

Bit 17, 18,19 and 20

Extended

Disable (24 bits)

Enabled (48 bits)

Disabled

(24 bits)

Bit 22

Sensitivity

Mode

Normal

Sensitivity

High Sensitivity

Normal

Bit 23

Input Filter

Disabled

Enabled

Disabled

24 to

Frame

Header

from 0000h to

FFFFh

One 16 bits Header or

two 8 bits Headers

(MSB first) depending

on Bit 17

9B58h

40 to

Frame

Length

from 01h to FFh

Number of 16 bits

words expected

08h

The Detection method bit meaning differs depending on UART/SPI pin value. In this table is listed the SPI

mode (UART/SPI=”0”). For Detection method bit meaning in UART mode (UART/SPI=”1”) please see

Table 12.

Table 11. Control register functions (continued)

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