Service - AMS Neve

Digital Service ManualXSP (SSP818-067)CARD DESCRIPTIONThe XSP signal processing card consists of four groups of 32bit floating point DSP devices.Each group has a dedicated coefficient interpolation processor. Three of the groupsperform path processing and have two Path Worker processors, the fourth group isdedicated to mix processing and has just one Mix Worker.To support the processing groups, there are three further DSPs. The Calculator producesand distributes coefficients around the DSP groups. The Worker configures and controlsdata distribution activities and the Root manages booting and backplane communication toother system elements via a mezzanine site.Audio data enters and leaves the card through four 32 bit time division multiplexed, ASICcontrolled backplane busses.LED INTERPRETATIONThe front panel LED indicators are arranged along the underside of thefront edge of the XSP.PowerResetRoot Processor Flag3Comm Mezzanine 0Comm Mezzanine 1Comm Mezzanine 2Comm Mezzanine 3Worker Flag3Worker LED 0Worker LED 1Calc Flag3Mix CoefficientProcessor Flag3Mix Worker ProcessorFlag3Mix Status 0Mix Status 1Mix Status 2Power Available to XSPCard in ResetROOT Sharc running from ROMACTEL Link 0 (External Comms)ACTEL Link 1 (External Comms)ACTEL Link 2 (External Comms)ACTEL Link 3 (External Comms)Worker Sharc Link (Internal comms)NOT USEDNOT USEDCalculator Sharc Link (Internal Comms)Mix Coeff Running FlagMix Worker Running flagNOT USEDNOT USEDNOT USEDIssue 3 Page 20