ST7LNB1Y0 datasheet(16/36 Pages) STMICROELECTRONICS

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ST7LNB1Y0 configuration

ST7LNB1Y0

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ST7LNB1Y0 configuration

To configure the ST7LNB1Y0 for the required target application, a dedicated DiSEqC

command is implemented. This configuration is stored in the ST7LNB1Y0 embedded

EEPROM location.

4.1

Command 0Fh

ST7LNB1Y0 devices are shipped to customers with a default parameter value. These

parameters can be updated using a dedicated 0Fh DiSEqC command.

This command has the following format where “data” is the parameter value to be

programmed at the “index” location as shown in Table 16.

Note:

The special command E0 xx 0F FF FF protects the EEPROM data from any subsequent

write access (where xx is the corresponding DiSEqC slave address).

4.2

Command 0Dh

For reading a parameter inside the EEPROM a dedicated 0Dh command has been added.

The command format is described in Table 14, where “index” is the address of the byte to be

read from EEPROM.

The format of the reply frame is given in Table 15, format where “data” is the byte read from

EEPROM.

Timings

The time required to update a byte parameter (write and read operation) is 130 ms, while

the time required to update all parameters is about 3.5 s.

Table 13.

Command 0Fh format

E0h

DiSEqC

slave address

0Fh

index

data

Table 14.

Command 0Dh format

E2h(1)

E2h framing (and E4h response) is supported from version 1.1 of the LNB1 software (previously, the

command 0Dh was implemented with E0h framing and the data response was without E4h framing).

DiSEqC

slave address

0Dh(2)

After the Command 0Dh, there is a delay of 10ms before getting the reply frame.

index

Table 15.

Reply frame format

E4h

data

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