STM8SPLNB1 STMicroelectronics, STM8SPLNB1 Datasheet - Page 12

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

STM8SPLNB1 operation
2.2.4
2.2.5
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Table 7.
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
signalling (13/18 V, 22 kHz tone) is recognized until a valid DiSEqC 1.0 command is
detected.
The following
commands.
Table 8.
Command 0x5A
This command is used during LNB (or switched) normal operation - operation after
configuration. Command 0x5A is DiSEqC command (see
with two data bytes. In dependence from those data bytes are performed two subcommands
which descriptions are in
Table 9.
1. See
Table 10.
1. SaTCR number - see
ODU_ChangeChannel SaTCR
.
.
0xE0/0xE2
E0 xx 38 F0
E0 xx 38 F1
E0 xx 38 F2
E0 xx 38 F3
command
frame
frame
ODU_PowerOff
0xE4
subcommand
Table 10: Subcommands 0x5A format - ODU_SaTCR_Op
Reply to command 0x0D format
Command 0x38 format
Command 0x5A format
Subcommands 0x5A format - ODU_SaTCR_Op
Table 8: Command 0x38 format
[device address]
DiSEqC™
backward signalling
address
data1
[data]
Table 2: SaTCRs implementation - ST7LNB1 compatible
13V / 22kHz
18V / 22kHz
equivalent
13V / 0kHz
18V / 0kHz
SaTCR
[7:5]
Table 10: Subcommands 0x5A format -
(1)
(1)
Doc ID 018831 Rev 3
Feed
command
data1
[4:2]
0x5A
(2)
selected
feed
0
Tun[9:8]
0
1
2
3
[1:0]
presents the truth table for the legacy
(3)
[data1]
Tun[7:0]
band
High
High
data1
Low
Low
data2
0x00
[7:0]
Table 9: Command 0x5A
(1)
for details.
(3)
This command is used for the
a SaTCR in low power mode.
This command is used to put
ODU_SaTCR_Op.
Horizontal
Horizontal
polarity
Vertical
Vertical
mode.
channel selection.
[data2]
description
data2
STM8SPLNB1
(1)
satellite
A
A
A
A
format)