AUX-TDM - Uncategorized Appsys ProAudio - Free user manual and instructions

Product Type	Professional Audio TDM Auxiliary Interface
Brand	Appsys ProAudio
Model	AUX-TDM
Category	Professional Audio Accessory
Primary Function	Provides auxiliary TDM bus expansion and routing for digital audio consoles and interfaces
TDM Bus Support	32-channel TDM (Time Division Multiplexed) bus
Supported Sample Rates	44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Interface Connector	DB-25 TDM serial connection
Power Supply	12V DC adapter, 500 mA
Power Consumption	5W max
Dimensions (W x D x H)	221 x 120 x 44 mm
Weight	0.9 kg
Chassis Material	Sturdy steel with matte finish
LED Indicators	Power, Bus Activity, Error status
Operating Temperature	0°C to 45°C
Storage Temperature	-20°C to 70°C
Regulatory Approvals	CE, RoHS certified
Included Accessories	External power adapter, user manual, mounting brackets
Maintenance	Clean with dry lint-free cloth; avoid solvents
Safety	No internal user-serviceable parts; do not open the chassis
Spare Parts	Available from Appsys ProAudio on request
Warranty	2 years limited warranty

Frequently Asked Questions - AUX-TDM Appsys ProAudio

What is the Appsys ProAudio AUX-TDM used for?

The AUX-TDM is designed to extend and route TDM audio buses in professional digital audio consoles, letting you integrate additional channels or external devices into your TDM-based system.

How many audio channels does the AUX-TDM support?

It supports up to 32 channels of TDM audio at the standard TDM bus resolution, suitable for connecting digital mixers, converters, and outboard gear.

What power supply is required for the AUX-TDM?

The unit requires a 12V DC adapter with at least 500 mA output. Appsys ProAudio includes a compatible adapter with the package.

Does the AUX-TDM support high sample rates like 192 kHz?

Yes, the AUX-TDM is rated for sample rates from 44.1 kHz to 192 kHz, ensuring compatibility with modern high-resolution audio setups.

Can I connect the AUX-TDM to my computer directly?

No, the AUX-TDM is a TDM bus device, not a USB or Thunderbolt interface. You need an audio interface with a TDM bus or a dedicated TDM adapter card to use it.

What type of cable does the AUX-TDM use?

It uses a standard DB-25 connector carrying the TDM serial data signal. Use a high-quality shielded cable for reliable operation.

How do I maintain and clean the AUX-TDM?

Disconnect the power and wipe the chassis with a soft, dry cloth. Do not use liquids or cleaners. Ensure ventilation slots are free of dust.

Is the AUX-TDM compatible with other TDM equipment brands?

The AUX-TDM follows the industry-standard TDM protocol, making it compatible with most TDM-based digital audio consoles and interfaces from professional manufacturers.

What do the LED indicators on the front panel show?

The front panel LEDs indicate power status, bus activity, and error conditions. Consult the manual for detailed signal status meanings.

What is the warranty period for the Appsys ProAudio AUX-TDM?

Appsys ProAudio provides a 2-year limited warranty covering manufacturing defects and workmanship, with optional extended warranty via authorized dealers.

USER MANUAL AUX-TDM Appsys ProAudio

AUX-TDM

64x64 channel Time Division Multiplexing/ I2S Card for FLX devices

User's Manual

((en))

Table of Contents

1. DESCRIPTION....3

1.1. Box Contents....3

2. INSTALLATION.... 3

2.1. Opening the flexiverter....3
2.2. Flexiverter Inside View....4
2.3. Installing the card....4

3. TDM INTERFACE PINS.... 5

3.1. Pinout (when looking on the card connectors mating face)....5
3.2. Pin descriptions.... 5
3.3. I/O Waveforms.... 6
3.4. Electrical I/O characteristics....6

4. DIP SETTINGS....7

5. SELF-TEST....7

6. SPECIFICATIONS....8

7. APPENDIX....8

7.1. Available AUX cards....8
7.2. Available FLX devices....9
7.3. Warranty....9
7.4. Manufacturer contact....9
7.5. Recycling....10
7.6. Document Revision History....10
7.7. About this document....10

1. DESCRIPTION

The AUX-TDM card provides up to 64x64 channels Time Division Multiplexing (TDM) interface on a 3.3V LVCMOS I/O. It supports four lines of data plus BCLK/LRCLK/MCLK/MUTE outputs, and four lines of data plus BCLK/LRCLK/MUTE inputs.

It can be fitted into every flexiverter (FLX) device for the following purposes:

to use the FLX as standalone converter between the built-in interface and this extension card
to add extra output splits to existing FLX devices by "tapping" channels of another conversion
to add additional channels/protocols to the FLX when it is used in double-flexiverter or flexiverter + multiverter configurations

For a detailed description of possible configurations, please refer to the manual of your base FLX device.

1.1. Box Contents

1 AUX-TDM card
1 Slot cover plate
☐ 34-pin, 0.635mm pitch ribbon cable, 30cm/1ft.
This manual

2. INSTALLATION

2.1. Opening the flexiverter

Required: Torx T10 screwdriver
Power off the device and detach all cables to avoid short-circuit or damage
☐ Detach the device from the rack-mount kit
Remove the four top screws and the top cover by pulling it upwards:

2.2. Flexiverter Inside View

1 Screws for AUX cover plate

2 AUX card connector

2.3. Installing the card

■Remove the screws holding the cover plate, and the blank cover plate
■Insert the AUX card from inside, using the supplied cover plate.

CAUTION: The slot cover must be located on the inside the slot.

Make sure it is correctly fitted to the card connector ²

■Secure the card using two cover screws 1
■The card has been installed correctly if you are able to select an audio routing mode involving AUX (long-press MODE button to enter Route Mode Selection).

3. TDM INTERFACE PINS

3.1. Pinout (when looking on the card connectors mating face)

3.2. Pin descriptions

Pin	Signal Direction	Description	TDM16 TDM8 TDM4 TDM2				(Stereo)
1, 2, 34	+3.3V Output Supply		for external circuit (1.5A max). Do not connect when external circuit has its own power supply
4,6,8,10,12,14,16,18, 20,22,24,26,28,30,32			Ground. All GND lines on the external circuit should be connected to ensure proper shielding between data lines
3	BCLK_IN	Input	Bit Clock input. TDM_IN* lines are sampled on the rising edge of this signal	512* LRCLK_IN	256* LRLCK_IN	128* LRCLK_IN	64* LRCLK_IN
5	LRCLK_IN	Input	Left/Right Clock input (Wordclock). Must be a 50% duty cycle. First half of the TDM_IN* audio channels are read during LRCLK_IN=0, second half of TDM_IN* channels during LRCLK_IN=1
7	TDM_INO Input	Audio data input line 0. Must be 32 bit per channel, left-justified or I2S depending on DIP setting. Only the first 24 bits of each channel are read, the rest is ignored.		Ch 1-16 (512 bit per LRCLK)	Ch 1-8 (256 bit per LRCLK)	Ch 1-4 128 bit per LRCLK)	Ch 1-2 (64 bit per LRCLK)
9	TDM_IN1	Input	Audio data input line 1	Ch 17-32	Ch 9-16	Ch 5-8	Ch 3-4
11	TDM_IN2	Input	Audio data input line 2	Ch 33-48	Ch 17-24	Ch 9-12	Ch 5-6
13	TDM_IN3	Input	Audio data input line 3	Ch 49-64	Ch 25-32	Ch 13-16	Ch 7-8
15	MUTE_IN Input	L: Normal operation H: Mute inputs, input data is ignored
17	Reserved
19	BCLK_OUT	Output Bit	Clock output. TDM_OUT* audio data changes on falling edge and is valid on rising edge	512* LRCLK_OUT	256* LRLCK_OUT	128* LRCLK_OUT	64* LRCLK_OUT
21	LRCLK_OUT	Output	Left/Right Clock output (Wordclock), 50% duty cycle. First half of the TDM_IN* audio channels are written during LRCLK_IN=0, second half ofTDM_IN* channels during LRCLK_IN=1
23	TDM_OUT0	Output Audio data output line 0.32 bit per channel, left-justified or I2S depending on DIP setting. Output is always 24 bits of audio plus 8 padding bits per channel. Data is valid on the rising edge of BCLK_OUT		Ch 1-16(512 bit per LRCLK)	Ch 1-8(256 bit per LRCLK)	Ch 1-4(128 bit per LRCLK)	Ch 1-2(64 bit per LRCLK)
25	TDM_OUT1	Output Audio data output line 1 Ch 17-32 Ch 9-16 Ch 5-8 Ch 3-4
27	TDM_OUT2	Output Audio data output line 2 Ch 33-48 Ch 17-24 Ch 9-12 Ch 5-6
29	TDM_OUT3	Output Audio data output line 3 Ch 49-64 Ch 25-32 Ch 13-16 Ch 7-8
31	MUTE_OUT	Output L: Normal operationH: Output data is invalid and should be muted
33	MCLK_OUT	Output Master clock output 256*LRCLK

Do NOT leave any input pins floating. Connect unused pins to GND or VCC, preferably with a 10k resistor.

3.3. I/O Waveforms

(1) in I2S mode (DIP6: down). Data is delayed by 1 BCLK cycle

(2) in left-justified mode (DIP6: up)

3.4. Electrical I/O characteristics

Pins Parameter Value Unit		Min Typ Max
+3.3V V	CC	3.135 3.3	3.465 V
	ICC			1.5	A
BCLK_IN, LRCLK_IN,TDM_IN*, MUTE_IN	VIH	2.0		VCC + 0.5	V
	VIL	-0.5		0.8	V
BCLK_OUT, LRCLK_OUT, TDM_OUT*,MUTE_OUT, MCLK_OUT	VOH	3.2	3.3	VCC	V
	VOL	0		0.1	V
	I0 ESD protection			±20	mA
All		IEC 61000-4-2 Level 4 ESD Protection±15-kV Contact Discharge / ±15-kV Air-Gap DischargeIEC 61000-4-4 EFT Protection: 80 A (5/50 ns)IEC 61000-4-5 Surge Protection: 3 A (8/20 μs)

4. DIP SETTINGS

The behavior of the card can be controlled by DIP switches 4..6 on the FLX device. Changing the DIP settings will come immediately into effect.

TDM mode	4 5	*TDM16. Each I/O line carries 16 channels of 32 bit audio data each (512 bits/BCLK cycles per LRCLK)
	4 5	TDM8. Each I/O line carries 8 channels of 32 bit audio data each (256 bits/BCLK cycles per LRCLK)
	4 5	TDM4. Each I/O line carries 4 channels of 32 bit audio data each (128 bits/BCLK cycles per LRCLK)
	4 5	TDM2 (Stereo). Each I/O line carries 2 channels of 32 bit audio data ea. (64 bits/BCLK cycles per LRCLK)
Format selection	6	*Left-justified, 32 bit per ch (24 bit audio data + 8 bits zero padding)
	6	I2S-Format, 32 bit per ch (24 bit audio data + 8 bits zero padding)Data is delayed by 1 BCLK cycle

* Default setting

5. SELF-TEST

The card can be tested for correct operation by the user. This is done using the special self-test mode, in which a special random test pattern is output on all channels. This pattern is looped back via an external cable into the corresponding inputs, where it is checked for consistency.

Note: A special loopback plug is required for this. The plug must connect pins 1-9, 2-10, 3-11, 4-12, 5-13, 6-14, 7-15, 8-16.

■Attach the loopback plug

■ Turn off the FLX, and hold down ○ Mode button while switching on again
■ Press Mode again until the "CLOCK" LEDs show "INT/48kHz" in cyan color. The device is now in self-test mode.
■The "AUX" LED in the MODE sections shows the result of the self-test:

red: error/no connection

green (loopback data received ok)

■ Press ○ Mode again or power off the device to exit self-test mode.

6. SPECIFICATIONS

Parameter Value
Dimensions 118x80mm (WxH)
Weight 40 g
Operating temperature	0..+55°C, non-condensing
Storage temperature	-40..+85°C, non-condensing
Inputs Up to 64 channels TDM16 (4 lines with 16ch each)Up to 32 channels TDM8 (4 lines with 8ch each)Up to 16 channels TDM4 (4 lines with 4ch each)Up to 8 channels stereo (4 lines with 2ch each)LRCLK (left/right clock). Polarity: frame starts with falling edgeBCLK (bitclock): Data is sampled on rising edge
Outputs Up to 64 channels TDM16 (4 lines with 16ch each)Up to 32 channels TDM8 (4 lines with 8ch each)Up to 16 channels TDM4 (4 lines with 4ch each)Up to 8 channels stereo (4 lines with 2ch each)LRCLK (left/right clock). frame starts with falling edgeBCLK (bitclock): Data changes on falling edgeMCLK: 256*LRCLK
Cable lengths 30cm /	1 ft. maximum
Sample rates 44.1/48kHz88.2/96kHz (channel count is halved)176.4/192kHz (channel count is quartered)
Latency Interface <> Flexiverter internal: 2 samples

7. APPENDIX

7.1. Available AUX cards

At the time of writing (2021-11), the following AUX cards are available. More will come, please check www.appsys.ch for updates.

Item Description
AUX-ADAT 16x16ch	ADAT I/O (2x Toslink In + 2x out). Supports also S/PDIF
AUX-ADAT-64 64x64ch	ADAT I/O (8x Toslink In + 8x out on external breakout box)
AUX-AES3 8x8ch AES3 I/O on 1x DB25, fully transformer isolated
AUX-AES67 64x64ch	AES67 network card
AUX-DANTE	64x64ch DANTE network card
AUX-MADI-COAX	64x64ch MADI for coaxial cable (BNC connectors)
AUX-MADI-OPTO	64x64ch MADI optical, SC connector (Multimode 125um 1310 nm)

AUX-MADI-SFP 64x64ch MADI for SFP (Small-Factor Pluggable) modules

AUX-WORDCLOCK BNC wordclock I/O

7.2. Available FLX devices

At the time of writing (2024-04), the following FLX devices are available. More will come, please check www.appsys.ch for updates.

Item Description
FLX-AES3 16x16 channel AES3 flexiverter (with AUX slot)
FLX-AES3/SRC 16x16 channel AES3 flexiverter with optional independent SRCs on the AES3 inputs (with AUX slot)
FLX-AES50 96x96 channel AES50 flexiverter (with AUX slot)
FLX-AES67 64x64 channel AES67 flexiverter (with AUX slot)
FLX-DANTE 64x64 channel DANTE flexiverter (with AUX slot)
FLX-MADI 128x128 channel MADI SFP & MADI coaxial module (with AUX slot)

7.3. Warranty

We offer a full two (2) year warranty from the date of purchase. Within this period, we repair or exchange your device free of charge in case of any defect*. If you experience any problems, please contact us first. We try hard to solve your problem as soon as possible, even after the warranty period.

* Not covered by the warranty are any damages resulting out of improper use, willful damage, normal wear-out (especially of the connectors) or connection with incompatible devices.

7.4. Manufacturer contact

Appsys ProAudio

Rolf Eichenseher

Bullingerstr. 63 / BK241

CH-8004 Zürich

Switzerland

www.appsys.ch

[e-mail]

Phone: [phone]

Mobile: [phone]

7.5. Recycling

According to EU directive 2002/96/EU, electronic devices with a crossed-out dustbin may not be disposed into normal domestic waste. Please return the products back for environment-friendly recycling, we'll refund you the shipping fees.

7.6. Document Revision History

1: Initial release

7.7. About this document

All trademarks mentioned in this document are property of the respective owners. All information provided here is subject to change without prior notice.

Document Revision: 1 · 2024-05-02

Copyright © 2024 Appsys ProAudio · Printed in Switzerland

IDENT 9.00.xxxxx.00