Product Manual

GE HEALTHCARERAFT VOLUSON® P8 / VOLUSON® P6
DIRECTION 5450839-100, REVISION 5 DRAFT (JANUARY 17, 2013) BASIC SERVICE MANUAL
5-24 Section 5-3 - FrontEnd Processor
• Stores this data in the Line Memory buffer (2x SDRAM)
• Transfers buffered data by DMA-transfer via PCI and PCI-Express to the PC
- Non-TimeMotion data (B, C): DMA0
- TimeMotion data (M, PW): DMA1.
C.) PIR FPGA programming interface
• This FPGA is the interface between the scanner connectors and the RFS-board.
D.) Ultrasound Data Pre-processing
• Raw ultrasound data is coming in from the Interface FPGA. It is pre-processed.Further processing
will be done by the PC. The pre-processed data is transferred back to the Interface-FPGA.
E.) System control
• PRF (Pulse Repetition Frequency) Generator
• Line Number (Lateral Position)
• Control of TX-Power DACs (generation of TX POWER reference voltage)
• Controls discharge of capacity on CPS board during the reduction of TX POWER
• Shut-down signal coming from the BF64 board is passed to the SOM
• Probe Select signals, which indicate that a probe is connected to a probe connector.
• Probe Code Interface: The Probe Code can be read from a connected probe, or a new code can be
written into the probe..
• Audio Control:
- PW Doppler Audio Output for buffered signals from the PC
F.) 4D motor control
• Master of Control for 3D-Sweep
• Master of Control for 4D-Sweeps
• Generation of Volume Trigger and Frame Trigger (for 4D)
• Drives motor (in 3D/4D-probes) via SIN (sine-signal) & COS (cosine signal)
• The HALL-signal coming from the 3D/4D probe is passed to the DSP for zero position detection.