PEB20534 Просмотр технического описания (PDF) - Siemens AG

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PEB20534

DMA Supported Serial Communication Controller with 4 Channels

Siemens AG 

PEB 20534

Overview

- Automatic handling of S- and I-frames

- Automatic processing of control byte(s)

- Modulo-8 or modulo-128 operation

- Programmable time-out and retry conditions

- Normal Response Mode operation for slave

- Asynchronous PPP mode

- Character oriented transmission of HDLC frame (flag, data, CRC, flag)

- Start/stop bit framing of single character

- No zero bit insertion/deletion

- Programmable character map of 32 hard-wired characters (00H-1FH)

- Four programmable characters for additional mapping

- Insertion/deletion of control characters corresponding to character maps

- Octet Synchronous PPP mode

- Octet oriented transmission of HDLC frame (flag, data, CRC, flag)

- Programmable character map of 32 hard-wired characters (00H-1FH)

- Four programmable characters for additional mapping

- Insertion/deletion of control characters corresponding to character maps

- Zero bit insertion/deletion

- Bit Synchronous PPP mode

- Bit oriented transmission of HDLC frame (flag, data, CRC, flag)

- Zero bit insertion/deletion

- 15 consecutive ’1’ bits abort sequence

- Extended transparent mode

- Fully bit transparent (no framing, no bit manipulation)

• Protocol and Mode Independent

- Data bit inversion

- Data over- and underflow detection

- Timer

• Microprocessor Interface

- 33 MHz/32-bit PCI bus interface option.

- 33 MHz/32-bit De-multiplexed bus interface option.

- 8-channel DMA controller with buffer chaining capability.

Master 15-word burst read and write capability (PCI Mode).

Master 4-word burst read and write capability (DEMUX Mode).

Slave single-word read and write capability.

- Circular interrupt queues with variable size.

- Maskable interrupts for each channel

• 8-/16-bit optional Local Bus Interface (LBI) for driving non-PCI peripherals in an PCI

environment.

• Synchronous Serial Control interface (SSC) for controlling peripherals.

• 16-bit General Purpose Port (GPP).

Semiconductor Group

21

Data Sheet 09.98

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