peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 34

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

Semiconductor Group
Table 1-3 Communication and Signaling Interfaces (cont’d)
Pin
No.
UART
3
2
1
Symbol
RxDU
TxDU
RTS
In (I)
Out (O)
I
O
O
During
Reset
I
“Low”
“High”
1-14
Function
Receive Serial Data on UART
Serial data input from the communications
link (peripheral device, modem, or data
set).
Transmit Serial Data on UART.
This is the composite serial data output to
the communications link (peripheral,
modem or data set). This signal is set to
the marking (logical 1 = ‘0’) state upon a
master reset operation.
Request To Send
When low, this informs the modem or data
set that the UART is ready to exchange
data. The RTS output signal can be set or
reset by programming bit 1 (RTS) of the
modem control register. A master reset
operation sets this signal to its inactive
(high) state. Loop mode operation holds
this signal in its inactive state.
PEB 20560
Overview
2003-08