SIS Documentation
SIS3820
VME Scaler
Page 4 of 79
7.18.9
Clearing/non clearing .................................................................................................................... 39
7.19
Copy disable register (0x104) ............................................................................................................... 40
7.20
LNE channel select register (0x108) ..................................................................................................... 41
7.21
PRESET channel select register (0x10C).............................................................................................. 42
7.21.1
Preset scheme ................................................................................................................................ 42
7.22
MUX OUT channel select register (0x110) .......................................................................................... 43
7.23
Inhibit/count disable register (0x200) ................................................................................................... 44
7.24
Counter clear register (0x204)............................................................................................................... 44
7.25
Counter Overflow register (0x208) ....................................................................................................... 44
7.26
Channel 1/17 Bits 33-48 register (0x210) ............................................................................................. 45
7.27
Veto external count inhibit register (0x214) ......................................................................................... 45
7.28
Test pulse mask register (0x218) ......................................................................................................... 46
7.29
SDRAM SPD register (0x300).............................................................................................................. 46
7.30
JTAG_TEST register ............................................................................................................................ 47
7.31
JTAG_DATA_IN register..................................................................................................................... 47
7.32
JTAG_CONTROL register ................................................................................................................... 47
7.33
One wire Id. register (tbd)..................................................................................................................... 48
7.34
FIFO address space (0x800000-0xFFFFFC)......................................................................................... 49
7.34.1
non incrementing VME master ..................................................................................................... 49
7.34.2
incrementing VME master ............................................................................................................ 49
7.35
SDRAM address space (0x800000-0xFFFFFC) ................................................................................... 49
8 Data
Format ....................................................................................................................... 50
8.1
32-bit Mode........................................................................................................................................... 50
8.2
24-bit Mode........................................................................................................................................... 50
8.3
16-bit Mode........................................................................................................................................... 51
8.4
8-bit Mode............................................................................................................................................. 51
9 Front
panel
elements.......................................................................................................... 52
9.1
Front Panel Layout................................................................................................................................ 52
9.2
Front Panel LEDs.................................................................................................................................. 53
9.3
Flat cable Input/Output Pin Assignments.............................................................................................. 54
9.3.1
ECL ............................................................................................................................................... 54
9.3.2
TTL ............................................................................................................................................... 55
10 Board
Layout.................................................................................................................. 56
11 Jumper
settings/pinouts .................................................................................................. 57
11.1
J1 ........................................................................................................................................................... 57
11.2
J90 ......................................................................................................................................................... 57
11.3
JP570 JTAG source............................................................................................................................... 58
11.4
CON500 JTAG ..................................................................................................................................... 58
12 Input
Configuration ........................................................................................................ 59
12.1
ECL ....................................................................................................................................................... 59
12.2
LVDS .................................................................................................................................................... 60
12.3
NIM....................................................................................................................................................... 61
12.4
TTL ....................................................................................................................................................... 62
12.4.1
High impedance TTL/LEMO........................................................................................................ 62
12.4.2
50
Ω
TTL/LEMO........................................................................................................................... 62
12.4.3
TTL/Flat Cable.............................................................................................................................. 62
13
TTL output configuration............................................................................................... 63
14 Signal
Specification........................................................................................................ 63
14.1
Control Signals...................................................................................................................................... 63
14.2
Inputs..................................................................................................................................................... 63
14.3
User Bits................................................................................................................................................ 63
15
Theory of operation........................................................................................................ 64
15.1
Enable Logic ......................................................................................................................................... 64
15.2
Read on the fly ...................................................................................................................................... 65
15.3
Latching scaler ...................................................................................................................................... 65
15.4
Preset Scaling........................................................................................................................................ 65
15.5
Multiscaling (MCS) .............................................................................................................................. 66
15.5.1
Minimum dwell time..................................................................................................................... 66