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CAMAC 176
MCCLURE
CAMAC 176/276 Module
TCLK/BSCLK TRANSMITTER MODULE
The CAMAC 176/276 is a single wide module which receives requests for
clock events from a 175 module and encodes
them onto a clock stream. The module has a test mode in which it
generates a selected event at a selected rate as well as a "compare"
register which will set a status bit if the selected event occurs.
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- F0A0
- READ EVENT TO BE DECODED
This module can detect one event and reflect that occurrence
in the status register and on the front panel.
- F1A0
- READ STATUS REGISTER
R8 | R7 | R6 | R5 | R4 | R3 | R2 | R1
|
---|
XMT | TST | SE | CLK | X | X | SEL | CLKL
|
- XMT
- Indicates activity on the clock.
- TST
- Indicates that the module is in the test mode.
- SE
- Indicates that selected event has occurred.
- CLK
- Indicates the presence or lack of RAW CLOCK.
- SEL
- Latched occurrence of selected event.
- CLKL
- Latches when RAW CLOCK is not present.
- F6A0
- READ MODULE NUMBER 176 OR 276
- F9A0
- DISABLE TEST MODE. CLEAR STATUS REGISTER
This does the same thing as a power on reset.
- F12A0
- CLEAR BIT TWO (SEL) IN STATUS REGISTER.
- F12A1
- CLEAR BIT ONE (CLKL) IN STATUS REGISTER.
- F16A0
- WRITE EVENT TO BE DETECTED
- F16A1
- WRITE RATE FOR TEST EVENT GENERATOR
Test event trigger can be scaled from 50 kHz to 195 Hz.
- F16A2
- WRITE TEST EVENT TYPE
This event and only this event is sent out on the clock
when the module is in the test mode.
- F28A0
- ENABLE TEST MODE
- F30A0
- DISABLE TEST MODE
In the test mode the data form the CAMAC 175 module is not
listened to. A test event which has been previously
written by a F16A2 command will be sent out over the clock.
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Viking I/O Assignments
PIN | SIGNAL | PIN | SIGNAL
|
1L | TCLK OUT 1 * | 1R | GND
|
2L | TCLK OUT 2 | 2R | GND
|
3L | TCLK OUT 3 | 3R | GND
|
4L | TCLK OUT 4 | 4R | GND
|
5L | GND | 5R | GND
|
6L | GND | 6R | GND
|
7L | GND | 7R | GND
|
8L | GND | 8R | GND
|
9L | GND | 9R | GND
|
10L | GND | 10R | GND
|
11L | GND | 11R | GND
|
12L | GND | 12R | GND
|
13L | GND | 13R | GND
|
14L | GND | 14R | GND
|
15L | GND | 15R | GND
|
16L | GND | 16R | GND
|
17L | GND | 17R | GND
|
18L | RAW CLOCK IN | 18R | GND
|
* Two parallel LS140s (50 ohm line driver)
|
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- N LED
- Flashes when module is selected
- TCLK LEMO
- TCLK Output
- RAW CLK LED
- Indicates presence of raw clock
- SDO LEMO
- Serial data out
- XMIT LED
- Flashes when an event is transmitted
- XMIT LEMO
- Pulses when an event is transmitted
- SEVT LED
- Flashes when the transmitted event equals selected event
- SEVT LEMO
- Pulses when the transmitted event equals selected event
- OSC LEMO
- 10MHz output from internal crystal
FRONT PANEL RIBBON CONNECTOR
Ribbon cable I/O assignments
PIN | SIGNAL | PIN | SIGNAL
|
1 | GND | 2 | D7
|
3 | D6 | 4 | D5
|
5 | D4 | 6 | D3
|
7 | D2 | 8 | D1
|
9 | D0 | 10 | GND
|
11 | STS* | 12 | GND
|
13 | GND | 14 | CLK
|
15 | GND | 16 | GND
|
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