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PCM-MIO-A-1/General Operation

v1.0

www.winsystems.com

Page 8

General Operation

5.1

System Block Diagram

The PCM-MIO-A-1 utilizes a Lattice MachXO2 FPGA to communicate

between the PC/104 ISA bus and the ADCs, DACs, and 48 DIO. The analog

16-bit inputs provide up to 100 Ksps, and ±25 V protection via the Linear

Technology LTC1859 ADC converters. The DACs provide 12-bit outputs via

the Linear Technology LTC2704.

Specifications

The PCM-MIO-A-1 adheres to the following specifications and

requirements.

Feature

Specification

Electrical

+5 V ±5% @ 500 mA (typ.), all outputs unloaded

Models

PCM-MIO-A-1

Includes: ADC, DAC, DIO

PCM-MIO-A-AD-1

Includes: ADC, DIO

Absolute Maximums A/D input protection:

•

Board off:

20 k

input impedance, up to + 20 V

•

Board on:

25 k

input impedance, up to + 25 V

Mechanical

Dimensions

3.6 in x 3.8 in (90 mm x 96 mm)

Weight

3.20 oz. (90.72 g)

PCB Thickness

0.078 in. (1.98 mm)

Содержание PCM-MIO-A-1

Страница 1: ...Inc 2890 112th Street Grand Prairie Texas 75050 817 274 7553 info winsystems com www winsystems com PCM MIO A 1 16 Channel 16 bit Analog Inputs 8 Channel 12 bit Analog Outputs and 48 Digital I O Prod...

Страница 2: ...ess statutory implied or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement WINSYSTEMS Inc makes no warranty of mercha...

Страница 3: ...nfiguration 10 7 1 Component Layout 10 7 1 1 Top View 10 7 2 Jumper Reference 11 7 2 1 J7 Base I O Address Jumpers 11 7 2 2 J10 Digital I O VCC Enable Jumpers 12 7 3 Connector Reference 12 7 3 1 J2 AD...

Страница 4: ...2 22 8 2 3 Command Register 23 8 2 4 Command Codes 24 8 2 5 Address Codes 24 8 2 6 Span Codes 24 8 2 7 Readback Enable 25 8 2 8 D A Interrupts 25 8 2 9 D A Examples 25 8 3 Registers 27 8 3 1 Register...

Страница 5: ...817 274 7553 Monday through Friday between 8 AM and 5 PM Central Standard Time CST Refer to the WINSYSTEMS website at http www winsystems com for other accessories including cable drawings and pinout...

Страница 6: ...lity in the system IRQs 0 1 2 8 and 13 are not supported 3 3 Analog to Digital The PCM MIO A 1 analog to digital conversion inputs are implemented by using two 16 bit Linear Technology LTC 1859CG devi...

Страница 7: ...e on the PCM MIO A AD 1 Two 4 channel 12 bit digital to analog D A LTC 2704CGW 12 Output ranges 0 5 V 0 10 V 5 V or 10 V 2 5 V 2 5 V to 7 5 V Each channel independently programmable for output type an...

Страница 8: ...rters The DACs provide 12 bit outputs via the Linear Technology LTC2704 6 Specifications The PCM MIO A 1 adheres to the following specifications and requirements Feature Specification Electrical VCC 5...

Страница 9: ...e between failure MTBF a MTBF hours 1074379 MTBF years 122 646 RoHS Compliant Yes Operating Systems Compatible with Windows and Linux a A MTBF measurement is based on a statistical sample and is not i...

Страница 10: ...ault base I O address J3 Analog output J1 Analog output J8 Digital I O J9 Digital I O J10 Digital I O Vcc enabled J5 PC 104 connector J6 PC 104 connector Item Description Reference J1 J3 D A Analog Ou...

Страница 11: ...ential port addresses The base address is jumper selectable at J7 Take care to choose an I O area that does not conflict with other resources in the system Address bits A0 to A4 are not selectable J7...

Страница 12: ...algorithm and an internal sample and hold circuit to convert an analog input signal to 16 bit digital data The output is two s complement binary for bipolar mode and offset binary for unipolar mode P...

Страница 13: ...t Linear Technology LTC 2704 devices These SoftSpan quad digital to analog converters DACs are software programmable for either unipolar or bipolar mode with specific voltage ranges on a per channel b...

Страница 14: ...the Lattice MachXO2 FPGA with WINSYSTEMS WS16C48 ASIC compatible programmed logic The 48 lines are each individually programmable as input or output and the first 24 lines are capable of fully latche...

Страница 15: ...GND 35 Port 3 Bit 6 34 GND 33 Port 0 Bit 7 34 GND 33 Port 3 Bit 7 32 GND 31 Port 1 Bit 0 32 GND 31 Port 4 Bit 0 30 GND 29 Port 1 Bit 1 30 GND 29 Port 4 Bit 1 28 GND 27 Port 1 Bit 2 28 GND 27 Port 4 B...

Страница 16: ...es Diagram Pin Name Pin Name Diagram Pin Name Pin Name J5 D0 GND C0 GND J6 A1 IOCHK B1 GND D1 MEMCS16 C1 SBHE A2 SD7 B2 RESET D2 IOCS16 C2 LA23 A3 SD6 B3 5V D3 IRQ10 C3 LA22 A4 SD5 B4 IRQ D4 IRQ11 C4...

Страница 17: ...device operation The specific options of each register are detailed here Notes 1 Accessed when REGISTER SELECT BASE 3 bit 3 00 2 Accessed when REGISTER SELECT BASE 3 bit 3 01 3 Accessed when REGISTER...

Страница 18: ...en REGISTER SELECT BASE 7 bit 3 1 3 0 Disabled 1 Enabled Register Address Base Read Write 7 6 5 4 3 2 1 0 DATA_LO 4 R LOW ORDER DATA BYTE DATA BIT 7 DATA BIT 6 DATA BIT 5 DATA BIT 4 DATA BIT 3 DATA BI...

Страница 19: ...input channels are measured with respect to GND Both the and inputs are sampled simultaneously so common mode noise is rejected Range Selection Bits 3 and 2 of the command register determine the inpu...

Страница 20: ...insystems com Page 20 Input Range Selection Examples of Multiplexer Options Examples of multiplexer options and changing the MUX assignment on The fly are shown below 3 2 UNI GAIN INPUT RANGE 0 0 5 V...

Страница 21: ...xxx to bits 3 4 of BASE 3 Select access to CMD 2 Write CMD selection to BASE 2 Set MUX channel operation range 3 Read data from BASE 0 and discard Lo_Byte unknown data 4 Read data from BASE 1 and disc...

Страница 22: ...dditional register select bit MASTER IRQ DA2 SELECT If this bit is set to 1 reading BASE 15 results in the status of the Master Interrupt Status Register Register Address Base Read Write 7 6 5 4 3 2 1...

Страница 23: ...and register used to configure the span and load the data The command word consists of a 4 bit command and a 4 bit address as shown Each DAC contains a command register used to Register Address Base R...

Страница 24: ...C n Set by Previous Command B1 Span DAC n 0 0 1 1 Write to B1 Span DAC n Set by Previous Command B1 Span DAC n 0 1 0 0 Update B1 B2 DAC n Set by Previous Command B2 Span DAC n 0 1 0 1 Update B1 B2 All...

Страница 25: ...t access to Resource Register 2 Write IRQ selection 0 15 hex to bits 3 0 of BASE 10 xF Hex IRQ 15 3 Write xxxxxx1 BASE 11 to enable the IRQ Enabling an interrupt for D A2 can be achieved in the same m...

Страница 26: ...te Span data 0000xxxx to BASE 8 Where xxxx Span 3 Write 00000000 zero BASE 9 High order byte for Span 4 Write CMD 01100xxx to BASE 10 Where xxx DAC channel 5 Write Low Byte data to BASE 8 6 Write High...

Страница 27: ...ible programmed logic This provides 48 lines of digital I O There are 17 unique registers within the WS16C48 Write High Byte data to BASE 9 Write CMD 00110000 to BASE 10 Move data to B1 Code 7 To pre...

Страница 28: ...reflects the combined state of the INT_ID0 through INT_ID2 registers When any of the lower three bits are set it indicates that an interrupt is pending on the I O port corresponding to the bit positio...

Страница 29: ...n interrupt is enabled for the corresponding port and bit When cleared to 0 the bit s edge detection interrupt is disabled Note that this register can be used to individually clear a pending interrupt...

Страница 30: ...TRM RELAY Industrial PC 104 relay board 16 SPDT relays Termination board ISM TRM ISO OUT Termination board 24 isolated outputs Termination board ISM TRM ISO IN Termination board 24 isolated inputs Ter...

Страница 31: ...ly s minimum load then the power supply does not regulate properly and can cause damage to the PCM MIO A 1 Power Harness Minimize the length of the power harness This reduces the amount of voltage dro...

Страница 32: ...breaking any connections I O Connections OFF Turn off all I O connections before connecting them to the PCM MIO A 1 or any other I O cards Connecting hot signals can cause damage whether the embedded...

Страница 33: ...hem could cause the embedded computer module to be flexed Avoid cutting the PCM MIO A 1 Never use star washers or any fastening hardware that cut into the PCM MIO A 1 Avoid over tightening of mounting...

Страница 34: ...manuals are updated often Periodically check the WINSYSTEMS website http www winsystems com for revisions Check pinouts Always check the pinout and connector locations in the manual before plugging in...

Страница 35: ...PCM MIO A 1 Mechanical Drawings v1 0 www winsystems com Page 35 Appendix B Mechanical Drawings The mechanical drawing for the PCM MIO A 1 is shown below...

Страница 36: ...Products shall remain vested in WINSYSTEMS until complete payment is made by Customer Title to any Software shall remain vested in WINSYSTEMS or WINSYSTEMS licensor from whom WINSYSTEMS has obtained...

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