RS-232 Interface
PHYTEC Meßtechnik GmbH 2004 L-657e_0
51
10.1
FF-UART
The FF-UART (Full Feature UART) is a UART with all modem and
control signals and a maximum transfer rate of 921.5 kBaud. This
interface is used on the phyCORE-PXA255 for communication with
the PC. The RS-232 transceiver device is located on the phyCORE
module at U1. The RS-232 transceiver is configured for auto
shutdown, which means that the driver shuts off automatically after a
few seconds in order to conserve power. The RS-232 transceiver can
be made inactive over the PowerLatch (data bit D1). On the
Development Board, the interface always extends to socket P1.
Pin 5: GND
Pin 9: FF_RI
Pin 4:
FF_DTR
Pin 8:
FF_CTS
Pin 3:
FF_TxD
Pin 7:
FF_RTS
Pin 2:
FF_RxD
Pin 6:
FF_DSR
Pin 1:
FF_DCD
Figure 27:
P1 Pin Assignment, FF-UART
1
2
3
4
7
6
5
8
9
Содержание phyCORE-PXA255
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