String Controller board v4.0.

 Introduction
 Front panel Connectors
 VME back plane
 Schematics of the board (all files in ps format)
 Parts list

Introduction.

String Controller is multypurpose Controller Board which comply wit VME back plane bus Specification and provide logic for interfacing VME computer with RS-485 and LSVD modules. It designed to work with RPC Crate Controller, Aerogel readout  and as TTM Master and slave module for SVD readout system.
Diiferent functionality type will be achieved using Field programmable Gate Array (FRGA) Xilinx 4013. It allows specify logic incide the module.

 
 

VME backplane has
23 bit Adress space
16 bit bidirectional data bus
7 Interrupt request lines
SYSCLK, SYSRESET*

 

Front panel connectors.

 
LSVD
 
RS-485
 

Party Line
 

Spare IO.
This Line can be used as input or output. Care should be taken about termination of the last transceiver in the string. 120Ohm termination resistor is connected through the jumper. In case of last transceiver jumper should be on.

ECL
On the front edge this board also has 16 pin (8 channels) ECL input.
 

VME back plane.

 

 Schematics of the board (all files in ps format)

if you want to get all schematic sheets alltogether I created file StringSchematic.tar.gz (334k). After you download this file you have to gunzip and untar it: Often web browser unzip the file for you, so if this is the case you will only need to untar it.

Parts list

Below are given all parts used on Crate Controller boards. Many of these parts have links pointed to corresponding data sheets copied from the chip manufacturer sites( Xilinx, National, Texas Instruments, Data Delay Lines), so if in future any questions will arise these sheets will provide relevant to the production time information. In order to view these datasheets you need Acrobat Reader.
 
Description Count Geometry
Xilinx4013E  1 pq-160 
Xilinx4005E 1 pc84
xc1700d, 128kbyte EPROM 2 dip8
xc1700d, 256kbyte EPROM 1 dip8
mc10125  2 dip16
ds96174  3 dip16
ds96175  3 dip16
ds96176CN  10 dip8
ds90c031  3 dip16
ds90c032 1 dip16
74als520N Octal binary and BCD identity comparators with enable  3 dip20
74als645a-1 Octal bus transceiver 2 dip20
74ls641 Octal bus transceiver with open collector outputs. 2 dip20
74ls541N Octal buffers and line drivers 5 dip20
idt7204 2 dip28
PDU-18F-10 1 dip40
34conn 3
16conn 1
VMEconn 1
LED 4
switch_8 1 dip16
2n3904  3 t092
mc7905act  1 to220
oscill 60 MHz 1
.1uf capacitor 63 .1inch
33uf capacitor 4 .3inch
fuse 3A 1 .4inch
fuse 1A 1 .4inch
jumper 2
resistors bussed 10 (510 Ohm) 2 sip10
resistors puldown 8 (120 Ohm) 8 sip8
resistors puldown 8 (100 Ohm) 2 sip8
resistor 4.7k 9 .3inch
resistor 200 7 .3inch
resistor 120 2 .3inch
 
      27       pulldown, 120           11           sip8
      28       res_sip_bussed10         2           sip10
      29       resistor, 200           16          r_.3in
 
 
 
(for string controller)
Power dissipation:
Vcc +5V:
 
Chip Quantity Current, mA Total Current, mA
ds96174 4 60 240
ds96175 4 60 240
ds96176 2 40 240
LED 6 25 125
idt7204 2
Xilinx4013 1 10 10
74als520a-1
Mail me

Back to my home page

Back to the BELLE KLM home page