STM8SPLNB1 Datasheet, PDF (12/44 Pages) STMicroelectronics – Internal 16MHz oscillator

STM8SPLNB1 operation
STM8SPLNB1
2.2.4
Command 0x38
This command is used to write to port group command - legacy support.
For application supporting the legacy (except for application number 1), the backwards
signaling (13/18 V, 22 kHz tone) is recognized until a valid DiSEqC 1.0 command is
detected.
The following Table 8: Command 0x38 format presents the truth table for the legacy
commands.
.
command
E0 xx 38 F0
E0 xx 38 F1
E0 xx 38 F2
E0 xx 38 F3
Table 8. Command 0x38 format
equivalent
selected
backward signalling feed
band
13V / 0kHz
0
Low
13V / 22kHz
1
High
18V / 0kHz
2
Low
18V / 22kHz
3
High
polarity
Vertical
Vertical
Horizontal
Horizontal
satellite
A
A
A
A
2.2.5
Command 0x5A
This command is used during LNB (or switched) normal operation (default operation after
configuration). Command 0x5A is DiSEqC command (see Table 9: Command 0x5A format)
with two data bytes. In dependence from those data bytes are performed two subcommands
which descriptions are in Table 10: Subcommands 0x5A format - ODU_SaTCR_Op.
Table 9. Command 0x5A format
frame
DiSEqC™
address
command
data1
0xE0/0xE2 [device address]
0x5A
[data1]⁽¹⁾
1. See Table 10: Subcommands 0x5A format - ODU_SaTCR_Op for details.
data2
[data2]⁽¹⁾
.
Table 10. Subcommands 0x5A format - ODU_SaTCR_Op
subcommand
[7:5]
data1
[4:2]
[1:0]
data2
[7:0]
description
ODU_ChangeChannel SaTCR⁽¹⁾ Feed⁽²⁾ Tun[9:8]⁽³⁾ Tun[7:0]^{(3) This command is used for the}
channel selection.
ODU_PowerOff
SaTCR⁽¹⁾
0
0x00
This command is used to put
a SaTCR in low power mode.
1. SaTCR number - see Table 2: SaTCRs implementation - ST7LNB1 compatible mode.
2. Feed parameter - see Table 11: Feeds and Table 15: Truth table for support of 8 RF inputs.
3. Tuning word - see notes in Table 14: STM8SPLNB1 EEPROM parameters for description.
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