VMIVME-5620 Intelligent HSD Emulator • High-performance HSD interface designed to minimize host software overhead • Executes commands from lists in memory • IBL compatibility high or low priority • HSD external mode support • Data buffering (FIFOs) • Data chaining and command chaining • 68020 microprocessor • Block transfers • 32-bit DMA transfers over HSD bus • 4 Mbyte/s transfer rate (VMIVME-5620 to VMIVME-5620) • Programmable VMEbus address modifiers (as master) • Programmable interrupt vectors and level • HSD compatibility as HSD master or HSD slave • VMEbus compatible (ANSI/IEEE STD 1014 - 1987 IEC 821 and 297) • MA32: MBLT32 as VME master • SAD024: SD32 as VMEbus slave • VMEbus-to-VMEbus link using two boards • 250-foot maximum cable length • Front panel fail LED • Jumper-selectable slave address • Bus release: ROR, RWD, FAIR, RCLR Graphics, Harris Night Hawk, DEC, Sun Workstations • Jumper-enabled system controller (Series 3 and 4), Modcomp, and Motorola Delta Series. INTRODUCTION — The VMIVME-5620 is an Encore HSD-compatible HSD emulator implemented on a double HSD MASTER MODE — The VMIVME-5620 can Eurocard. Two flat 50-conductor cables with socket operate in the HSD master mode, which is the mode used to connectors at both ends connect the VMIVME-5620 to the drive HSD peripherals. It fully implements this mode, Encore HSD/IBL Interface or other HSD-compatible device. sending External Function Commands to the HSD peripheral device, receiving device status, and transferring data blocks The VMIVME-5620 uses an integrated VMEbus to or from the device, all by interpreting an IOCL in VMEbus interface (Cypress VIC068), and an on-board local bus with global memory. Further, it supports External Mode, in which processor and memory that interprets lists (IOCL) of the HSD peripheral device controls addressing and data host-based I/O Control Blocks (IOCBs). The VMEbus transfers to or from VMEbus global memory. See Figure 2. interface provides variable width host global memory access, and interrupts to the host interrupt handler. Figure 1 is a block INTERbus LINK (IBL) MODE — The diagram of the VMIVME-5620. VMIVME-5620 can operate in the INTERbus Link (IBL) mode. This mode permits two HSD-compatible controllers, The VMIVME-5620 can function as either HSD master one of which may be an Encore HSD controller, to form a or HSD slave. However, the VMIVME-5620 is designed with high-speed link. The IBL mode reroutes some signals on the features that make it particularly effective as an HSD master HSD interface so that a crossed cable is not necessary. in minimizing host processor overhead. Listed below are See Figure 3. some examples of system configurations in which the VMIVME-5620 may be used. DATA FIFOs — Data FIFOs are provided so that data transfers on the VMEbus may take place asynchronously with a. VMIVME-5620 as HSD master in a VME-based the data transfers on the cable. The data FIFOs are 512 computer controlling Encore/Gould peripherals with transfers deep (2,048 bytes). an HSD interface (shown in Figure 2). PROGRAMMING CONSIDERATIONS — The b. VMIVME-5620 as an HSD slave in a VME-based VMIVME-5620 operates as both VMEbus master and slave. computer or embedded controller being driven by an As a slave, the board receives setup parameters from the host HSD master in another computer (shown in Figure 3). CPU. These setup parameters are written into Control The HSD master could be an Encore/Gould HSD on a Registers and provide information such as: interrupt vectors, SEL bus or another VMIVME-5620 in a VME-based computer. Ordering Options c. VMIVME-5620 as HSD master in a VME-based March 7, 1995 800-005620-000 E computer interfaced via a VMIVME-HSDA to a VME-based embedded controller, such as the VMIC VMIVME-5620 series of Intelligent I/O Controllers (IIOCs). For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859 E-mail: info@vmic.com Web Address: www.vmic.com Some examples of computers that can be used with the Copyright © April 1991 by VMIC Specifications subject to change without notice. VMIVME-5620 are: Encore Series 91, Concurrent, Silicon VMIC • 12090 South Memorial Parkway • Huntsville, Alabama 35803-3308 1 VMIVME-5620 interrupt levels, and an address that points to a location in Transfer Width: 32, 16, or 8 bits per HSD cycle global memory which contains the Input Output Control Blocks (IOCBs). Transfer Mode: Bidirectional half-duplex The IOCBs are lists of commands for the HSD to Address Counters: 32-bit execute. It executes these commands without further involvement from the host CPU. The VMIVME-5620 Command/Control: From list in memory, D32 or D16 functions as a VMEbus master to retrieve the IOCB or D8 (EO) DMA commands and execute them. I/O Cables: Two 50-conductor (twisted pair flat-ribbon) 2 The VMIVME-5620 supports Command Chaining, (Cables not included) which allows the board to execute the next IOCB in the list after the current IOCB in execution is completed. Only after Maximum Cable Length: 250 ft completion of the entire IOCB list chain, does the host CPU become involved again. System Controller Mode (Must Be in Slot One of the Chassis): SYSCLK driver The VMIVME-5620 also supports Data Chaining which Iack daisy-chain driver allows data to be transferred into or out of noncontiguous Four-level Bus Arbiter (Round Robin or priority) 3 portions of memory. BERR time-out watchdog VMEbus DATA TRANSFERS PHYSICAL/ENVIRONMENTAL Slave: SAD024:SD32 A24:A16:AD0:D32: D16: D8 Temperature: 0 to 55 °C, operating (EO) -20 to 85 °C, storage Addressable on 64-byte boundaries (jumpers) Humidity: 20 to 80 percent relative, noncondensing Master: A32:MBLT32 A32:A24:A16:D32:D16:D8 (EO): BLT Altitude: Operation to 10,000 ft Bus request level 0, 1, 2, or 3 Interrupt level and vectors programmable Cooling: Forced air convection Bus Grant Delay: 50 ns Dimensions: Double height Eurocard (6U) (160 mm x 233.35 mm) Maximum Transfer Rates: VMIVME-5620 to -5620: 4 Mbytes/sec (32 bits Power Requirements: 3.5 A (typical) at +5 VDC 1 wide) 5.0 A (maximum) VMIVME-5620 to -HSD: HSD dependent, 1 maximum 3.2 Mbyte/s TRADEMARKS TRANSFER SPECIFICATIONS The VMIC logo is a registered trademark of VMIC. Other registered trademarks are the property of their Maximum Block Size: 256 Kbyte (16-bit transfer respective owners. counter) 1. Transfer rates degrade as a function of cable length and 2. VMIC recommends the cables be high-quality twisted-pair with operating mode and are a function of VMEbus memory speeds. overall shield, for lengths greater than 50 feet. Rates specified are with 25-foot cables, IBL or Master/Slave modes, Bus Capture or Block Transfer modes, and VMEbus 3. The BERR watchdog times any bus master, but is available only global memory with 88 ns write access time and 240 ns read when the VMIVME-5620 is in slot one as the system controller. access time. (Average Read/Write access time of 164 ns.) Please The VMIVME-5620 provides no BERR watchdog function, refer to the Encore Technical Manual No. 35-329-132-000, or to even for the VMIVME-5620’s own master cycles, if the . VMIC Document 500-005620-000 (the VMIVME-5620 VMIVME-5620 is not in slot one. The VMIVME-0300 is Product Manual) for details. available for use with system controllers in which no BERR watchdog timer is available. 2 For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859 VMIVME-5620 A16 A32 FIFO CONT D32 D32 VME 32 x 256 15 INTERFACE C/S C/S DATA 32 68020 PROCESSOR FIFO 32-bit 32 x 256 RAM 32-bit CONTROL STATUS ROM 8-bit Figure 1. VMIVME-5620 Functional Block Diagram VMIC • 12090 South Memorial Parkway • Huntsville, Alabama 35803-3308 3 HSD I/O CONNECTIONS DRIVER/RECEIVERS LOCAL BUS A16:D32 VMEbus A32:D32 VMIVME-5620 VMEbus VMIVME- I/O I/O GLOBAL 5620 CPU DEVICE DEVICE MEMORY (HSD MASTER) INTELLIGENT HSD DATA CONTROL 32 15 ENCORE PERIPHERAL Figure 2. VMEbus System to Encore Peripheral VMEbus VMIVME- 5620 I/O I/O GLOBAL CPU (HSD SLAVE) DEVICE DEVICE MEMORY INTELLIGENT HSD DATA CONTROL 32 15 ENCORE I/O HSD CPU DEVICE OR VMIVME- 5620 SEL bus or VMEbus Figure 3. Encore to VMEbus System Block Diagram 4 For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859