Technical Description; Features; Iusc; Ram - SeaLevel Route 56 User Manual

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The Sealevel Systems' ROUTE 56.PCI adapter was designed for seamless integration into any PCI based system.
The ROUTE 56.PCI adapter requires a PCI slot, one IRQ, an 8 byte block of I/O address and a 16K block or 256K
block of memory address. The memory range of this adapter can be configured to reside in the lower 1 Megabyte
memory only or anywhere in upper memory. Low memory must to be configured as 16 X 16K blocks of page
memory. High memory can be configured as a 256K linear block or 16K paged memory.

Features

Single channel high speed sync/async wide area network (WAN) interface
RS-232, RS-422/449, EIA-530, V.35 and RS-485 serial interface capability with versatile cabling options
Multi-protocol capable including: PPP (point-to-point protocol),
Bi-Sync, Mono-Sync, HDLC, SDLC, etc.
Ideal for T1, Fractional T1, E1, and ISDN and other WAN applications
On-board Z16C32 (IUSC™) with built in DMA controller and 32 byte FIFO buffer
Up to 10 Mbps burst mode
256K of on-board RAM
Link list DMA supported
16-bit data path
OEM Security feature available as an option

IUSC™

The ROUTE 56.PCI is based on a single Zilog Z16C32 IUSC (Integrated Universal Serial Controller). Application
and driver software access the IUSC registers through the first 256 bytes of on-board RAM. Register access to the
IUSC can be disabled via I/O registers allowing the first 256 bytes of RAM to be used for buffer storage. The IUSC
has a built-in DMA controller that allows high-speed data transfers directly to and from the 256K block of on-board
memory. The IUSC's built-in DMA controller supports 4 different modes of DMA transfer: Single Buffer, Pipelined,
Array, and Link List. An on-board 20MHz oscillator clocks the IUSC.

RAM

The memory window is located by BIOS PCI setup or the Set PCI function. The window size is a 16K paged or
256K linear block. In paged mode the registers are located in the I/O registers.
Low Memory options: 16 pages of 16K memory blocks totaling 256K.
High Memory options: 16 pages of 16K memory blocks totaling 256K or one linear block of 256K
memory.
Sealevel Systems ROUTE 56.PCI

Technical Description

Technical Description
Frame Relay, X.25, high-speed Async,
Page 3

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