CoreAHB2APB Key Features • • • • Contents Supplied in SysBASIC Core Bundle Bridges between Advanced Microcontroller Bus Architecture (AMBA) Advanced High-Performance Bus (AHB) and Advanced Peripheral Bus (APB) Up to 16 APB Slave Devices Supported Automatic Connection to CoreAHB and CoreAPB in CoreConsole General Description ................................................... Connecting CoreAHB2APB in CoreConsole .............. Resource Requirements ............................................. Ordering Information ................................................ List of Changes ........................................................... Datasheet Categories ................................................. 1 2 2 2 3 3 Benefits • • • Allows Easy Connection of APB Devices to a CoreMP7 or Cortex-M1 Subsystem Auto Stitch in CoreConsole for Rapid Development Compatible with AMBA, CoreMP7, and Cortex-M1 General Description CoreAHB2APB (AMBA Bridge) is an AHB slave that links the AHB bus to the APB bus and acts as the Master on the APB bus. Address decoding for the APB bus is carried out within CoreAHB2APB, and this provides select signals for up to 16 APB slave slots. Supported Device Families • • • • • • Fusion IGLOO™ IGLOOe ProASIC®3L ProASIC3 ProASIC3E Read and write transfers on the AHB bus are converted to corresponding transfers on the APB bus. Highbandwidth peripherals, such as memory controllers, are typically connected to the AHB, whereas the APB bus is used for less demanding peripherals, such as watchdogs. Unlike the AHB bus, transfers on the APB bus are not pipelined. Synthesis and Simulation Support • Supported in the Actel Libero® Integrated Design Environment (IDE) Verification and Compliance • Compliant with AMBA January 2008 © 2008 Actel Corporation v 2 .1 1 CoreAHB2APB Figure 1 shows the CoreAHB2APB block diagram. APB Bridge Module Output Data and Address Bus Drivers Standard AHB Slave Interface State Machine AHB Slave Output Drivers APB Output Drivers APB Address Decoder Figure 1 • CoreAHB2APB Connecting CoreAHB2APB in CoreConsole Table 1 lists the ports present on the AMBA Bridge and describes how to connect these in CoreConsole. Table 1 • AMBA Bridge Connections Connection CoreConsole Label Description Required Connections AHB slave interface APB master interface HCLK HRESETn AHBslave APBmaster HCLK HRESEETn Connect this to any of the 16 available slave slots on the AHB bus (CoreAHB). Connect this to the APBmaster interface on the APB bus (CoreAPB). AHB system clock input. Connect this to the HCLK output of CoreMP7Bridge. Active-low AHB system reset. Connect this to the HCLK output of CoreMP7Bridge. Resource Requirements The utilization for CoreAHB2APB in a ProASIC3 device is 250 tiles. Ordering Information CoreAHB2APB is included in the SysBASIC core bundle supplied with the Actel CoreConsole IP Deployment Platform (IDP). The obfuscated RTL version of SysBASIC (SysBASIC-OC) is available for free with CoreConsole. The source RTL version of SysBASIC (SysBASIC-RM) can be ordered through your local Actel sales representative. CoreAHB2APB cannot be ordered separately from the SysBASIC core bundle. 2 v2.1 CoreAHB2APB List of Changes The following table lists critical changes that were made in the current version of the document. Previous Version Changes in Current Version (v 2 .1 ) v2.0 Advanced v0.1 Page The "Supported Device Families" section was updated to include ProASIC3L. 1 The "Resource Requirements" section was updated to change ProASIC3E to ProASIC3. 2 The "Benefits" section was updated to include Cortex-M1. 1 The "Supported Device Families" section was updated to include IGLOO and IGLOOe devices. 1 Datasheet Categories In order to provide the latest information to designers, some datasheets are published before data has been fully characterized. Datasheets are designated as "Product Brief," "Advanced," and "Production." The definitions of these categories are as follows: Product Brief The product brief is a summarized version of an advanced or production datasheet containing general product information. This brief summarizes specific device and family information for unreleased products. Advanced This datasheet version contains initial estimated information based on simulation, other products, devices, or speed grades. This information can be used as estimates, but not for production. Unmarked (production) This datasheet version contains information that is considered to be final. v2.1 3 Actel and the Actel logo are registered trademarks of Actel Corporation. All other trademarks are the property of their owners. www.actel.com Actel Corporation Actel Europe Ltd. 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