Programmable Input/Output; Timer & Pulse Generator - Caen V2718 Technical Information Manual

Document type: Title:
User's Manual (MUT) Mod. V2718 VME PCI Optical Link Bridge
In case of A3818, an on-board FLASH stores 4 firmware images in 4 different pages. By operating the two
switches S1 and S2 on the board (see Fig. 38), the user can manually select the copy of the firmware to be
loaded in the FPGA at power-on:
S2 = A, S1 = A -> firmware on page 0
S2 = A, S1 = B -> firmware on page 1
S2 = B, S1 = A -> firmware on page 2
S2 = B, S1 = B -> firmware on page 3

3.6. Programmable Input/Output

The V2718 front panel houses 7 LEMO 00 type connectors, 5 outputs and 2 inputs;
signals can be either NIM or TTL (dip-switch selectable). Seven green LEDs (one per
connector) light up as the relevant signal is active. All the signals can perform several
functions, default setting of the output signals is:
DS (either DS0 or DS1)
AS
DTACK
BERR
LMON (output of Location Monitor)
All the siganls, whose detailed description is reported in § 2, may be connected to other
logic functions; the available functions are listed in the following table:
Timer & Pulse Generator
Scaler
Coincidence
Input Register
Output Register
Location Monitor
3.6.1. Timer & Pulse Generator
It is an unit which produces a burst of N pulses (N can be infinite, i.e. the pulses are
countinuously generated), whose period T and duration W are programmable (see
§ 2.13.17, § 2.13.18, § 2.13.19 and § 2.13.20). The burst START can be sent either as
input signal (on one LEMO input connector) or as manual/software command. A RESET
can interrupt the sequence and set to zero the outputs. These modules can be used, for
example, as:
−
Clock Generator
−
Burst Generator
−
Monostable
−
Gate and Delay Generator
−
Set-Reset Flip-Flop
NPO:
00106/03:V2718.MUTx/11
Table 3.1: FPGA available functions
Availability
Filename:
V2718_REV11.DOC
Revision date:
03/07/2018
Input
2 2
1 3
1 2
1 2
1 -
1 VME bus
Revision:
11
Output Register
1 3
1 2
1 0
- 1
5 1
1 -
Number of pages: Page:
79 41