Decoder

A01-A31 address, LWORD*, IACK*, AM0-AM5

SN74LS245 SN74LS245

Interrupter 5V-3.3V

Level change

Xilinx CPLD 1

25MHz XC95288

JTAG

VMEbus interface

2*18-Bits 133MHz FIFO

-- Interrupteriackc5<='1' when IACKIN='0' and address(3 downto 1)="101" and AS='0' and DS0='0' and IACK='0'

else '0';iackc6<='1' when IACKIN='0' and address(3 downto 1)="110" and AS='0' and DS0='0' and IACK='0'

else '0';iackc <='1' when iackc5='1' or iackc6='1'

else '0';

process(iackc5,iackc6,rec,wrc,reg,DATA)begin

if iackc5='1' then DATA(7 downto 0) <= "01110111";

elsif iackc6='1' then DATA(7 downto 0) <= "01010000";

elsif wrc='1' thenreg <= DATA;

elsif rec='1' thenDATA <= reg+"00010001000100010001000100010001";

elseDATA <= "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ";

end if;end process;

Function Descriptions

1. Interrupter

2. Interrupt 5,6

3. Read/Write

4. IACKIN/IACKOUT

Decoder

A01-A31 address, LWORD*, IACK*, AM0-AM5

SN74LS245 SN74LS245

Interrupter 5V-3.3V

Level change

Xilinx CPLD 1

25MHz XC95288

JTAG

VMEbus interface

2*18-Bits 133MHz FIFO

**************************** Resource Summary ****************************

Macrocells Product Terms Registers Pins Function Block Used Used Used Used Inputs Used 218/288 ( 75%) 934 /1440 ( 64%) 91 /288 ( 31%) 81 /168 ( 48%) 644/864 ( 74%)

PIN RESOURCES:

Signal Type Required Mapped | Pin Type Used Remaining ------------------------------------|---------------------------------------Input : 28 28 | I/O : 80 80Output : 20 20 | GCK/IO : 1 2Bidirectional : 32 32 | GTS/IO : 0 4GCK : 1 1 | GSR/IO : 0 1GTS : 0 0 |GSR : 0 0 | ---- ---- Total 81 81

Adopt from vmebus.rpt

Decoder

A01-A31 address, LWORD*, IACK*, AM0-AM5

SN74LS245 SN74LS245

Interrupter 5V-3.3V

Level change

Xilinx CPLD 1

25MHz XC95288

JTAG

VMEbus interface

2*18-Bits 133MHz FIFO

Adopt from sn74v245.pdf

Capture and record 1GHz signal (Realized circuit)

National

Semiconductor ADC081000

Xilinx Spartan-3 XC3S400

1GHz Analog Signal

1GHz Clock signal

500MHz synchronous latch

4 ports 8-bits 250MHz

FIFO2 ports 8-Bits 500MHz LVDS Data

4 ports 8-bits 250MHz Level 1 Cut

Comparator

4 ports 8-bits 250MHz Level 2 Cut

Comparator

8 ports 16-bits

125MHz Encoder

4 ports 8-bits 250MHz

MUX

Time CounterTrigger

250MHz synchronous clock

250MHz synchronous clock

4*32-Bits 125MHz Dual-port RAM 70T3519

Decoder

A01-A31 address, LWORD*, IACK*, AM0-AM5

SN74LS245 SN74LS245

Interrupter 5V-3.3V

Level change

Xilinx CPLD 1

25MHz XC95288

XC

18V02

XC

18V01

JTAG

JTAG

Xilinx Spartan-3 XC3S400

Xilinx Spartan-2 XC2S100

Xilinx CPLD XC95288

AD FADC

ADC081000