CONTROLS
CAMAC 186
DIGITAL I/O
ED-35359/B
CONTROLS HARDWARE RELEASE NO. 64.1
CAMAC 186 Module
Digital Muxed Input - Pulsed Output
Robert J. Ducar
November 7, 1988
1 DESCRIPTION
2 CAMAC 186 OP CODES
5 SPARES
6 DOCUMENTATION
1 DESCRIPTION
The one-wide CAMAC 186 module provides basic digital input and output control facilities. With the addition of external multiplexing hardware, the 186 module can provide up to 256 bits of digital monitoring - organized as sixteen 16 bit words. The 186 module also provides twelve pulsed control lines. Inputs and outputs are active high and TTL compatible. External monitor data multiplexing is achieved by the decoding of four mux address lines that are sourced from the 186 module. These lines increment every ten microseconds and request the indicated monitor word to be presented at the monitor input of the module. The presented monitor data are latched into on-board cache memory approximately eight microseconds after the mux address lines change state. Monitor data are thus refreshed every 160 microseconds. A front panel led, "UA", indicates that the monitor update process is active. The twelve control lines are normally low outputs and pulse high for approximately ten microseconds when addressed. A ten microsecond strobe pulse is always issued when the control line register is written. The control lines are sourced by 74128 drivers and may be terminated in 100 ohms. The strobe and mux address lines are sourced by 74F3037 drivers and may also be terminated in 100 ohms. The monitor line inputs are terminated with 1000 ohms to ground. Upon clear command or powering-up, the control line register is set to zero. This module will assert LAM if the monitor word multiplexing process is not active. Provision has also been made to assert LAM when any bit of the upper and/or lower byte of Monitor Word 0 is not asserted. This feature is activated by insertion of 74LS30 chips at IC locations #52 and/or #53. The 186 module is a custom derivative of the CAMAC 180/181 module.
2 CAMAC 186 OP CODES
All codes return module Q and X immediately. This module may assert LAM.
F(0) A(n) Read Monitor Word n (n = 0 to 15) --------- R16 - R1 ----------------------------------- M15 (MSB) - Monitor Data - (LSB) M0
F(1) A(0) Read Status and Control Line Register --------- R16 | R15 | R14 | R13 | R12 - R1 ---------------------------------- | 1 | LAM | UA | 0 | C11 - C0 |
LAM: When asserted, indicates UA is false. May also indicate that any bit of the upper and/or lower byte of Monitor Word 0 is not asserted.
UA: Update Active. Assertion indicates the monitor update process is active.
C11-C0: This data indicate which control lines were last pulsed.
F(4) A(0) Read Monitor Word n (n = 0 to 15) --------- Auto Increment Mode
R16 - R1 ----------------------------------- M15 (MSB) - Monitor Data - (LSB) M0
Read pointer n is set to zero by the F(1) A(0) command and incremented by 1 after each F(4) A(0) command.
F(6) A(0) Read Module Number --------- R16 - R9 | R8 - R1 ----------------------------- | 0 | BA Hex, 186 Dec |
F(9) A(0) Reset Module --------- This command is a logical or with Z*S2 and power-up clear. It resets the control line register to zero.
F(17) A(0) Write Control Line Register ---------- W16 - W13 | W12 - W1 ---------------------------- | X | C11 - C0 |
3 CAMAC 186 MODULE - I/O ASSIGNMENTS
Rear I/O: 36 Position Edge Connector A = R B = L
POS SIGNAL POS SIGNAL --- -------------- --- ---------------- 1L M15 (MSB) 1R M14 2L M13 2R M12 3L M11 3R M10 4L M9 4R M8 5L M7 5R M6 6L M5 6R M4 7L M3 7R M2 8L M1 8R M0 (LSB) 9L C11 9R C10 10L C9 10R C8 11L C7 11R C6 12L C5 12R C4 13L C3 13R C2 14L C1 14R C0 15L MA8 15R MA4 16L MA2 16R MA1 17L BP /AIP 17R STROBE (10 usec) 18L Common 18R Common
The BP /AIP output reflects the state of the P1 line of the CAMAC dataway connector. In Tevatron crates, this line generally indicates the state of the Tevatron Abort Link. BP (active high) signifies Beam Permit. /AIP (active low) signifies Abort In Progress. This line is driven by a 74F3037 driver and may be terminated in 100 ohms.
4 CAMAC 186 MODULE - FRONT PANEL
The CAMAC 186 module has the following front panel features:
N led: Red (stretched)
LAM led: Red
UA led: Green (stretched), Indicates monitor update process is active.
5 SPARES
A supply of CAMAC 186 operational spares is maintained on the second floor of the Linac Annex. Upon replacement be sure to check the optional installation of 74LS30 ICs at locations #52 and #53.
6 DOCUMENTATION
0812-ED-35359 Schematic ( Revision B ) 0812-BD-35360 Artwork ( RF-102 B ) 0812-BD-35361 Master Drawing 0812-MD-34863 Outline Drawing 0812-MC-35522 Front Panel Mechanical 0812-MC-218449 Front Panel Silkscreen
7 PALS DOCUMENTATION
Directory: DEVL::USR$DISK3:[DUCAR.PALS]
Flienames: 18651A.DAT Module Number Source PLS153 ( Unique to RF-102B Artwork )
rjd: DEVL::USR$DISK3:[DUCAR.DOC] CMC186.RNO