Service manual

GE MEDICAL SYSTEMS
D
IRECTION 2300749-100, REVISION 2LOGIQ
TM
3 SERVICE MANUAL
Chapter 5 5-21
•PCI IF:
Converts USC bus in FEC board. The local bus is connected to each block. It transfers B/M mode
data to PACO FPGA via the COMSO data bus.
•USC IF:
Has functions of generation to USC bus, generation of TGC signal and test signal for self-
diagnostics, COMSO control, IIC Bus.
• CLK Generator Block:
Generates 40MHz (two phases), and 26.6MHz clock using 160MHz master clock.
• Real Time Controller (RTCL):
The TRIG cyclical Real Time Control is done by SH4 RISC processor. SH4 is a one of MID BUS
agent through SH-PCI bridge.
• PCI - PCI Bridge:
It Bridges between Mid bus and host side PCI bus by using i960RP. Mid bus is basically compliant
to Compact PCI. Primary side PCI is connected to Host PC through PCI cable and PC2IP which is
mounted on PCI slot of PC-motherboard.
• Image Data Transferring:
It receives image data from COMSO, and send them to Host side. Data is buffered when receiving
on COMSO data bus. After buffered, data is stored and handled on Local side of i960. And DMA
function of i960RP perform data transferring to host PC memory.
• Peripheral Control:
The SH4 or i960RP also performs other functions like safety observation, HV Control and so on