I'm struggling to sync two Delta 1010LT cards. I've tried both the word clock and SPDIF approaches, without any success. Both the SPDIF Out and Word Clock Out connectors show no activity when inspected by an oscilloscope.
Questions:
- Is the word clock output something you must switch on in the ALSA driver or is it supposed to start automatically when you have a valid clock signal on the card?
- Do I have to do something special to get SPDIF output (I'm new to this)? I've fiddled with iecset from alsa-utils, and otherwise I connected the SPDIF Out to various inputs using the patchbay of envy24control. Still, no signal appears on the connector.
If it helps, here is /proc/asound/card0/ice1712:
M Audio Delta 1010LT at 0xc000, irq 9
EEPROM: Subvendor : 0x12143bd6 Size : 29 bytes Version : 1 Codec : 0x1f ACLink : 0x80 I2S ID : 0x72 S/PDIF : 0x3 GPIO mask : 0x4 GPIO state : 0x7e GPIO direction : 0xfb AC'97 main : 0x0 AC'97 pcm : 0x0 AC'97 record : 0x0 AC'97 record src : 0x44 DAC ID #0 : 0x3 DAC ID #1 : 0x3 DAC ID #2 : 0x3 DAC ID #3 : 0x3 ADC ID #0 : 0x3 ADC ID #1 : 0x3 ADC ID #2 : 0x3 ADC ID #3 : 0x3 Extra #28 : 0x0
Registers: PSDOUT03 : 0x8080 CAPTURE : 0x55000000 SPDOUT : 0x0005 RATE : 0x08
(What do these numbers mean?)
Thanks in advance, Ludwig
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