HadCon a.k.a. HadControl a.k.a. HadShoPoMo

Introduction

HadCon is a general purpose IO module for detector and experiment control as well as for small data acquisition systems.

(HADControl general purpose board) Since its first application has been a power monitor for the Hades Shower Detector it has been formerly introduced and well known as HadShoPoMo (Hades Shower Power Monitor (HADControl/HadShoPoMo general purpose board).

HadCon has an SoC on-board, ETRAX 100LX MCM 4+16 from AXIS (Wikipedia: en/de) - which will be discontinued, see the new HadCon2.

Running a standard Linux the Etrax provides "Connectivity to the world" via TCP/IP.
On the other side it connects via its internal serial interface to an ATMEL AT90CAN128 microcontroller and optionally to an Xilinx CPLD.
Via this junction the ATMEL provides a multitude of possible connections to field buses and general I/O ports.

EPICS base and its applications, modules, and extensions can be cross-compiled to run on Etrax Axis' CRIS architecture (see section Architecture: ETRAX's CRIS by AXIS

• Summarizing:
  • CPU: AXIS ETRAX 100LX MCM 4+16
  • Microcontroller: ATMEL AT90CAN128
    • I²C (internal)
      • 2 × 4-channel 8-Bit DAC - Digital-to-Analog Converter
    • CANbus
      • galvanically isolated CAN - High-speed CAN Transceiver
        • optional external power supply
    • SPI
    • ADCs
    • RS232
    • 32 digital I/Os
  • CPLD: Xilinx XCR3064XL-6CS48C
  • 2 × Rotary Code Switches, hexadecimal coding
  • Ericsson PME 5218TS switching regulator for up to 6A 3.3V power usable for other boards
  • full EPICS support

Documentation

Info

• GSI-EE's Documentation
  • HadCon

Layout

• Schematic, (local copy)

Powering

• ≈≥ 6V (, < 5 W), 5.5V to 8 V.
  • I_typ ≈ 200 mA
• internal power regulator
  • Ericsson PME 5218TS switching regulator for up to 6A
    • 3.3V power usable for other boards

CPU

• Datasheets:
  • ETRAX 100LX MCM 4+16, (local copy)
  • System-on-chips and device servers, (local copy)
• User documentation:
  • ETRAX 100LX Designer’s Reference, (local copy)
  • ETRAX 100LX Programmer’s Manual, (local copy)

Kernel

• Kernel programming: formerly: Sergey Yurevic, HADES
  • Documentation: HADES-wiki: How-to and resources
    (local zip:EmbeddedLinuxDev...zip)
    AND
  • setting HadCon to the right state
    (local zip: EtraxMcmControl... .zip)

USART - Universal Synchronous and Asynchronous serial Receiver and Transmitter

	connects to
/dev/ttyS1	ATMEL
/dev/ttyS0	RS232-connector

Microcontroller

• AT90CAN32/64/128 (428 pages, revision H, updated 8/08), local copy

USART - Universal Synchronous and Asynchronous serial Receiver and Transmitter

	connects to
USART0	CPU

CPLD (Complex Programmable Logic Devices)

• Xilinx 64 Macrocell CPLD (XC)R3064XL
  • Xilinx (XC)R3064XL, local copy

connects to:

Device* ↔ *Device					Bus/Signal
	pin			pins
ETRAX	D0		CPLD	FB2	DATA
	D1			FB2
	D2			FB2
	D3			FB2
	A1			FB2	ADDR
	A2			FB2
	A3			FB2
	A4			FB2
ATMEL	PC0 (A8)			FB3	PC
	PC1 (A9)			FB3
	PC2 (A10)			FB3
	PC3 (A11)			FB3
	PC4 (A12)			FB3
	PC5 (A13)			FB3
	PC6 (A14)			FB3
	PC7 (A15/CLK0)			FB3
JCPLD1	1			FB4	CP_GP0
	2			FB4	CP_GP1
	3			FB4	CP_GP2
	4			FB4	CP_GP3
	5			FB4	CP_GP4
	6			FB4	CP_GP5
	7			FB4	CP_GP6
	8			FB4	CP_GP7

I²C

2 × 4-channel 8-Bit DAC - Digital-to-Analog Converter

• Quad, 8-Bit, Low-Power, Voltage Output, I²C Interface Digital To Analog Converter, DAC5574, local copy
• Addressing

  Device	I2 sub address		Signals
  	A1	A0
  UDAC1: 4-channel DAC (DAC5574)	1	0	DACOUT1 ... DACOUT3
  UDAC2: 4-channel DAC (DAC5574)	0	1	DACOUT4 ... DACOUT7

regulators

V_IN 5.5 - 8V → linear regulator: 5V → switching regulator: 3.3V

linear regulator V_IN: 5.5V - 8V → V_OUT: 5V

• UCC383-ADJ, local copy

switching regulator: V_OUT: 3.3V

• Ericsson PME 5218TS
  • PME 5000 series, (local copy)

galvanically isolated CAN-bus

Can - High-speed Can Transceiver

• ATA6660 - High-speed Can Transceiver, local copy

iCoupler Digital Isolator

• ADuM1100BR - iCoupler Digital Isolator, local copy

Switches

Rotary Code Switches, hexadecimal coding

• 2 × Rotary Code Switches, hexadecimal coding - P36SMT , local copy
• pull ATMEL's PC0 ... PC8 down to GND
  
  

  SWITCH1	Connector Pins	AT90CAN128 via 4.7kΩ		SWITCH2	Connector Pins	AT90CAN128 via 4.7kΩ
  	1	PC0 (A8)			1	PC4 (A12)
  	2	PC1 (A9)			2	PC5 (A13)
  	4	PC2 (A10)			4	PC6 (A14)
  	8	PC3 (A11)			8	PC7 (A15/CLK0)

Buttons

SW1	not mounted
SW2	not mounted
SWNB1	not mounted

LEDs

ETRAX	PA6	???
ETRAX	PA7	???
	pin	color

Connectors

JDINOUT1 / JDINOUT2

• I/O of ATMEL
  
  

  JDINOUT1	Connector Pins	AT90CAN128		JDINOUT2	Connector Pins	AT90CAN128
  	1	PA0 (AD0)			1	PC0 (A8)
  	2	PA1 (AD1)			2	PC1 (A9)
  	3	PA2 (AD2)			3	PC2 (A10)
  	4	PA3 (AD3)			4	PC3 (A11)
  	5	PA4 (AD4)			5	PC4 (A12)
  	6	PA5 (AD5)			6	PC5 (A13)
  	7	PA6 (AD6)			7	PC6 (A14)
  	8	PA7 (AD7)			8	PC7 (A15/CLK0)
  	9/10	GND			9/10	GND

JADC1

• ADC inputs of ATMEL
  
  

  Connector Pins	AT90CAN128	comments
  1	PF0 (ADC0)
  2	PF1 (ADC1)
  3	PF2 (ADC2)
  4	PF3 (ADC3)
  5	PF4 (ADC4)	overlap with JTAG inputs of ATMEL
  6	PF5 (ADC5)
  7	PF6 (ADC6)
  8	PF7 (ADC7)
  9/10	GND

JTAG1

• JTAG connector
  
  

  Connector Pins	Signal	comments
  9/11	TCK	10kΩ to V3_3
  3	TDI	← CPLD / Jumper J2 ← ATMEL
  1	TMS
  7	TDO	→ ATMEL (→ CPLD)
  4/6/8/10/12	GND
  5	V3_3
  2/13/14		not connected

JCAN1

• JCAN1 CAN connector
  
  

  JCAN1	Connector Pins	Signal	comments
  	1	CANH	↔ CAN - High-speed Can Transceiver ATA6660 ↔ iCoupler Digital Isolator ↔ ATMEL
  	2	CANL
  	3/5	VCAN_INPUT
  	4/6	GND_CAN

JDAC1

• Output of the 2 4-channel DAC (DAC5574)
  
  

  Connector Pins	Signal	Device	Device pin
  1	DACOUT0	UDAC1	VoutA
  2	DACOUT1		VoutB
  3	DACOUT2		VoutC
  4	DACOUT3		VoutD
  5	DACOUT4	UDAC2	VoutA
  6	DACOUT5		VoutB
  7	DACOUT6		VoutC
  8	DACOUT7		VoutD
  9/10	GND

JPS1

• mixed Signals DAC (DAC5574)
  
  

  Connector Pins	Signal	Device	comments
  1/2	V5_0_CON
  3/4	GND
  5	DACOUT0	UDAC1	VoutA
  6	DACOUT1		VoutB
  7	DACOUT2		VoutC
  8	DACOUT3		VoutD
  9/10	POWER_ON	AT90CAN128	PA7 (AD7)
  11	ADC0		PF0 (ADC0)
  12	ADC1		PF1 (ADC1)
  13	ADC2		PF2 (ADC2)
  14	ADC3		PF3 (ADC3)
  15	ADC4		PF4 (ADC4)
  16	ADC5		PF5 (ADC5)
  17	ADC6		PF6 (ADC6)
  18	ADC7		PF7 (ADC7)
  19/20	GND

JSUBD1

• RS232 connector Sub-D 9

  Connector Pins	ETRAX	comments
  2	RXD0	ETRAX's /dev/tty0 via RS232 driver
  3	TXD0
  7	RTS0
  8	CTS0
  5	==
  1/4/6/9	not connected

Bugs, Notes, Remarks, Tweaks & Twiddling

Notes and Remarks

1-wire

1. When driving 1-wire devices, typically via JDINOUT2, make sure to have (at least) 1 pull-up resistor of about 3.3kΩ on the data line of the 1-wire bus connected to the power VDD.
   • Recommended to have it at the master, e.g. at HadCon's connector JDINOUT2.
   • Possible option for future, directly at the connector, when using one of JDINOUT2's pins as permanent power pin.

Tweaks: increase ATMEL_CLOCK to 10MHz

Bridge Flip-flop to increase ATMEL_CLOCK to 10MHz

to be able to transmit up to baud rates of 115200 you have to manipulate the hardware of the hadcon.
The clock signal of the oscillator X1 is 20 MHz. It is scaled down by two flip-flops (UFF1, UFF2) first to 10 MHz and then to 5 MHz.
Now 10 MHz are needed
Therefore UFF2 has to be bridged or short-cut, i.e.

1. pin 5 of UFF2 has to be disconnected from its pad and removed
2. A cable has to be soldered connecting pin 1 of UFF2 to the solder pad of pin 5

Bug: Switches

SW2

SW2 is not correct wired, don't use it

Firmware

Microcontroller

e.g. see:

• HadCon Multipurpose Controls Api

CPLD

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-- PeterZumbruch - 16 Jul 2013