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FDC37C665IR Folha de dados(PDF) 9 Page - SMSC Corporation |
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FDC37C665IR Folha de dados(HTML) 9 Page - SMSC Corporation |
9 / 162 page 9 DESCRIPTION OF PIN FUNCTIONS PIN NO. NAME SYMBOL BUFFER TYPE DESCRIPTION 91 nRequest to Send nRTS2 O2 Active low Request to Send output for Secondary Serial Port. Handshake output signal notifies modem that the UART is ready to transmit data. This signal can be programmed by writing to bit 1 of Modem Control Register (MCR). The hardware reset will reset the nRTS signal to inactive mode (high). Forced inactive during loop mode operation. 83 nData Terminal Ready nDTR1 O2 Active low Data Terminal Ready output for primary serial port. Handshake output signal notifies modem that the UART is ready to establish data communication link. This signal can be programmed by writing to bit 0 of Modem Control Register (MCR). The hardware reset will reset the nDTR signal to inactive mode (high). Forced inactive during loop mode operation. 93 nData Terminal Ready nDTR2 O2 Active low Data Terminal Ready output for secondary serial port. Handshake output signal notifies modem that the UART is ready to establish data communication link. This signal can be programmed by writing to bit 0 of Modem Control Register (MCR), The hardware reset will reset the nDTR signal to inactive mode (high). Forced inactive during loop mode operation. 89 Transmit Data 2 TXD2 IRTX O12 O12 Transmitter Serial Data output from Secondary Serial Port. Transmitter Serial IR Data output from Secondary Serial Port. |
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