STM8SPLNB1 STMicroelectronics, STM8SPLNB1 Datasheet - Page 11

• Manufacturer Part Number: STM8SPLNB1
• Description: DiSEqC slave microcontroller for SaTCR based LNBs and switchers
• Manufacturer: STMicroelectronics

STM8SPLNB1
2.2
2.2.1
2.2.2
Note:
2.2.3
DiSEqC commands details
Command signaling
To be detected, the DiSEqC-ST commands must be sent after a voltage change from 13 to
18 V. A delay time between 4 ms and 24 ms must be respected before sending the DiSEqC-
ST commands (see
Figure 5.
Command 0x0F
STM8SPLNB1 devices are shipped to customers with a default parameter values. These
parameters can be updated using a dedicated 0x0F DiSEqC command. This command has
the following format where “[data]” is the parameter value to be programmed at the “[index]”
location as described in
Table 5.
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).
Command 0x0D
This command is dedicated for reading configuration parameters. This command has the
following format where the “[index]” is location to be read as shown in
STM8SPLNB1 EEPROM
Table 6.
The format of the reply frame from slave has format according
0x0D format
0xE0/0xE2
frame
frame
0xE2
Signaling of the DiSEqC-ST command
Command 0x0F format
Command 0x0D format
where “[data]” is the byte read from EEPROM.
[device address]
[device address]
DiSEqC™
DiSEqC™
address
address
Figure 5: Signaling of the DiSEqC-ST
Table 14: STM8SPLNB1 EEPROM
parameters.
Doc ID 018831 Rev 3
command
command
0x0F
0x0D
[index]
[index]
data1
data1
command).
parameters.
Table 7: Reply to command
STM8SPLNB1 operation
Table 14:
data2
[data]
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