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UM0934 датащи(PDF) 101 Page - STMicroelectronics

номер детали UM0934
подробное описание детали  ST7570 S-FSK power line networking System-on-Chip
PDF  113 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0934 датащи(HTML) 101 Page - STMicroelectronics

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UM0934
PHY mode communication example
Doc ID 17389 Rev 2
101/113
9
PHY mode communication example
This example shows how to use the PHY data services (Section 3.5.1) in order to perform
the transmission of a PHY frame from station1 to station2 (Figure 29), with a detailed time
diagram of data exchanged on the UART interfaces of both stations (Figure 30).
It is assumed that both station1 and station2 have been initialized, in accordance with the
initialization procedure as in Section 8.1, and they have been further set with the same value
for MIB object 00A1h (with access layer mode equal to PHY), except for operating mode,
that is Client for station1 and Server for station2.
Figure 29.
Data communication
Figure 30.
Time diagram: host interface communication
The exchanged local frames, as in Figure 30, have the following syntaxes:
Powerline
network
STATION 1
STATION 2
ST7570
PHY
layer
ST7570
PHY
layer
External
host
External
host
P_Data.
request
P_Data.
confirm
P_Data.
indication
Powerline
network
P_SDU
PHY frame transmission
PRE
SSD
ACK
CMD_SyncIndication
(P_Sync .indication )
CMD_DataIndicatio n
(P_Data.indication )
TXD
Local Frame
Local Frame
T_REQ
ACK
RXD
T_REQ
TXD
RXD
CMD_DataRequest
(P_ Data.request )
ACK
Status
Local Frame
CMD_DataConfirm
(P_Data.confirm)
ACK
Local Frame
1
2
3
4



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