AMIS-49587_P2 Datasheet, PDF (27/55 Pages) ON Semiconductor – Power Line Carrier Modem

AMIS--49587
TX_ENB
Communication Controller
Data
RAM
Program
ROM
Timer 1 & 2
TO
TRANSMIT
FROM
RECEIVER
ARM
Risc
Core
Serial
Comm .
Interface
Local Port
POR
Watchdog
Interrupt
Control
Test
Control
TxD
RxD
T_REQ
BR 0
BR 1
RX _DATA
CRC
TX_DATA / PRE _SLOT
RESB
TEST
Figure 23. Communication Controller
6.4.1 Local Port
The controller uses 3 output ports to inform the actual
status of the PLC communication. RX_DATA indicates if
AMIS--49587 is waiting for its configuration, if it is in
research of synchronization, or if it is receiving data. CRC
indicates if the received frames are valid: the cyclic
redundancy code (CRC) is correct. TX_DATA/PRE_SLOT
is the output for either the transmitting data (TX_DATA) or
a synchronization signal with the time--slots (PRE_SLOT).
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