SAB82538 Datasheet, PDF (34/253 Pages) Infineon Technologies AG – ICs for Communications

SAB 82538
SAF 82538
q FIFO buffers for efficient transfer of data packets.
A further speciality of ESCC8 are the 64-byte deep FIFO buffers used for the
temporary storage of data packets transferred between the serial communications
interface and the parallel system bus. Because of the overlapping input/output
operation (dual-port behaviour), the maximum message length is not limited by the
size of the buffer. The dynamic load of the CPU is drastically reduced by transferring
the data packets block by block via Direct Memory Access supported by the ESCC8.
The CPU only has to initiate the data transmission by the ESCC8 and determine the
status in case of completed reception, but is not involved in data transfers.
q The 16-bit wide microprocessor interface enables high data throughput and offers a
high flexibility for connection to both 8/16-bit Siemens/Intel and Motorola type
microprocessor systems. Moreover, interrupt driven systems are supported by
vectored interrupts and interrupt cascading capabilities.
q In addition to standard modem control lines associated with each of the serial
channels, 28 universal ports are provided for applications related to or independent of
the serial channels.
Semiconductor Group
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