D360

68360 Based 3U VMEbus Communications Controller Card

Features

  • 25/33 MHz 68EN360 Communications Controller with Built-in CPU32+  Processing Core, I/O, and Memory Interface
  • Ethernet via 10BaseT or AUI
  • Two 2-wire RS232 Ports and One Sync/Async RS232 Port with Handshaking
  • Two Sync/Async Serial ports of RS232 or RS422/485
  • Flexible DMA
  • 4 MB of 32 bit Wide DRAM
  • 2 or 4 MB Flash PROM
  • 256 KB or 1 MB of Dual Ported NV SRAM
  • Background Debugger Port
  • Battery Backed Real Time Clock
  • VMEbus Slot 1 Capability
  • Industrial Versions Available

The D360 is a highly integrated VMEbus single board computer that specializes in I/O processing by virtue of its high speed serial ports and multiple DMA channels. Based on Motorola's MC68EN360, the module has the processing power of a 68020 (4.5 MIPS at 25 MHz) and, unlike other 683xx chips, a 32 bit external bus.  The D360 offers greater reliability as all I/O and the memory interface is built into the CPU.
I/O and DMA
The D360 provides five serial ports and an Ethernet interface.  These six I/O ports are built into the 68EN360.  Two of these are Serial Management Controllers (SMC's). SMC's are simple two-wire (RxD and TxD) asynch communications ports and they are configured on the D360 as RS232 ports and both are accessible through one RJ45 phone connector.

The remaining four ports are Serial Communication Controllers (SCC's).  SCC's are very versatile and full featured.  The first SCC is implemented  as an Ethernet controller that can be selected as an AUI interface (via DB15) or as a 10BaseT port (via an RJ45 connector).  SCC2 is configured as an RS232 port with RTS, CTS, and DCD handshake lines in addition to RxD and TxD.  SCC3 and SCC4 can be selected  either for RS232 operation (with the same lines as SCC2, less the DCD); or as differential RS422 or RS485 for synchronous and multidrop interfaces.  Data rates up to 2 Mbps are supported in the synchronous mode.

The D360 also takes advantage of the 68EN360's variety of DMA channels.  The 14 SDMA channels, two for each I/O port, can be used to move data between the ports and memory (internal RAM, local D360 RAM, or VMEbus memory).  Two IDMA channels can move data from any target (I/O or memory) to any destination (I/O or memory) with incrementing addresses or not.  The D360's powerful DMA capability makes it an efficient communications processor.
Memory
The D360 provides four different varieties of memory: up to 512 KBytes of EPROM, 2 or 4 MByes of flash ROM, 256 KBytes or 1 MByte of SRAM, 4 MBytes of DRAM with an option to expand to a denser DRAM module. All four styles of silicon memory may be populated simultaneously. The SRAM is 16 bits wide, battery backed with an on-board lithium coin cell or by VSTNDBY, and is dual ported to the VMEbus. Mailbox IRQ’s are generated on level 3 when the SRAM addressed below $1000 is written to from the VMEbus. All memory is 16 bits wide except for the DRAM which has a 32 bit data path.
VMEbus Interface
The D360 has a complete VMEbus interface with Slot 1 Controller capability which is jumper configurable. As a Slot 1 Controller, the D360 is a Priority (PRI) arbiter and it generates BERR, SYSCLOCK, SYSRESET, SYSFAIL, and is an IACK daisy chain driver. The D360 is also a FAIR requester on level 3 and it is a VMEbus IRQ Handler which can handle all seven IRQ levels.

As a master the D360 can initiate Standard Address (A24) and Short I/O (A16) address mode cycles with D16/D8 data transfers. As a slave, the D360’s SRAM can be accessed by A24, D16/D8 cycles.
Front Panel Connectors
The D360 has three different front panel schemes determined by which mode of Ethernet (AUI or 10BaseT) is required and how much serial I/O is needed. The only way to access all five serial ports in a single slot wide front panel is by using 10BaseT Ethernet as in option 1.
  1. D360 with 10BaseT twisted pair Ethernet and all five serial ports made available at a single slot front panel via five RJ45 connectors.
  2. D360 with an AUI Ethernet port available through a DB15 connector and three RS232 ports available through two RJ45 connectors in a single slot wide front panel.
  3. D360 with an AUI Ethernet port available through a DB15 connector and five serial ports accessible through four RJ45 connectors in a double wide front panel occupying two VMEbus slots.
 
Basic Configurations:
PART# Clock Speed RS232 Ports RS-422/422 Ports LAN Type Dual Ported SRAM Front Panel Width
D360xx2T2 25 MHz 5 0 10baseT 1 MB 1 Slot
D360xx2T4 25 MHz 3 2 10baseT 1 MB 1 Slot
D360xx2Ax 25 MHz 3 0 AUI 1 MB 1 Slot
D360xx2A2 25 MHz 5 0 AUI 1 MB 2 Slot
D360xx2A4 25 MHz 3 2 AUI 1 MB 2 Slot
D360xx2L2 25 MHz 5 0 AUI and 10BaseT 1 MB 2 Slot
D360xx2L4 25 MHz 3 2 AUI and 10BaseT 1 MB 2 Slot
Upgrades:
D360Fxxxx  2 MB Flash ROM installed 
D360Gxxxx 4 MB Flash installed
D360xGxxx 4 MB DRAM installed
D360xx3xx 33 MHz Processor

back to top