TC11IB Datasheet, PDF (30/108 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC11IB
Serial Interfaces
The TC11IB includes three serial peripheral interface units:
– Asynchronous/Synchronous Serial Interface (ASC)
– High-Speed Synchronous Serial Interface (SSC)
– Asynchronous Serial Interface (16X50)
Asynchronous/Synchronous Serial Interface
Figure 5 shows a global view of the functional blocks of the Asynchronous/Synchronous
Serial interface ASC.
C lock
f_ASC
C o n tro l
A d d re s s
Decoder
ASC
M odule
RxD
TxD
P o rt
C ontrol
P1.6 /
ASC_RxD
P1.7 / ASC_TxD
Interrupt
C o n tro l
MCB04938
Figure 5 General Block Diagram of the ASC Interfaces
ASC Module communicates with the external world via one pair of I/O lines. The RXD
line is the receive data input signal (in Synchronous Mode also output). TXD is the
transmit output signal. Clock control, address decoding, and interrupt service request
control are managed outside the ASC Module kernel.
The Asynchronous/Synchronous Serial Interface provides serial communication
between the TC11IB and other microcontrollers, microprocessors or external
peripherals.
The ASC supports full-duplex asynchronous communication and half-duplex
synchronous communication. In Synchronous Mode, data is transmitted or received
synchronous to a shift clock which is generated by the ASC internally. In Asynchronous
Mode, 8-bit or 9-bit data transfer, parity generation, and the number of stop bits can be
selected. Parity, framing, and overrun error detection are provided to increase the
reliability of data transfers. Transmission and reception of data are double-buffered. For
multiprocessor communication, a mechanism is included to distinguish address bytes
from data bytes. Testing is supported by a loop-back option. A 13-bit baud rate generator
Data Sheet
26
V2.3, 2003-11