peb20525 Infineon Technologies Corporation, peb20525 Datasheet - Page 16
peb20525
Manufacturer Part Number
peb20525
Description
2 Channel Serial Optimized Communication Controller For Hdlc/ppp
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20525.pdf
(252 pages)
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PEB 20525
PEF 20525
Introduction
1
Introduction
The SEROCCO-H is a Serial Communication Controller with two independent serial
1)
channels
. The serial channels are derived from updated protocol logic of the ESCC and
DSCC4 device family providing a large set of protocol support and variety in serial
interface configuration. This allows easy integration to different environments and
applications.
A generic 8- or 16-bit multiplexed/demultiplexed slave interface provides fast device
access with low bus utilization and easy software handshaking (in the P-LFBGA-80-2
package only an 8-bit data bus is provided). DMA handshake control signals allow
connection to an external DMA controller.
Large on-chip FIFOs of 64 byte capacity per port and direction in combination with
enhanced threshold control mechanisms allow decoupling of traffic requirements on host
bus and serial interfaces with little exception probabilities such as data underruns or
overflows.
Each of the two Serial Communication Controllers (SCC) contains an independent Baud
Rate Generator, DPLL and programmable protocol processing (HDLC, PPP). Data rates
of up to 12.5 Mbit/s (2 Mbit/s in DPLL assisted modes) are supported. The channels can
also handle a large set of layer-2 protocol functions (LAPD, SS7) reducing bus and host
CPU load. Two channel specific timers are provided to support protocol functions.
1)
The serial channels are also called ’ports’ or ’cores’ depending on the context.
Data Sheet
16
2000-09-14
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