Search found 279 matches
- Tue Oct 18, 2016 4:00 pm
- Forum: Q&A
- Topic: AVB VendorID
- Replies: 4
- Views: 12001
Re: AVB VendorID
OK slight complication - the Vendor ID part of 1722.1 doesn't exist anymore. The XMOS implementation is out of date in this regard with what was published in the final standard. The ratified standard has a single 64-bit field called the entity_model_id instead of two separate 32-bit fields named ven...
- Tue Oct 18, 2016 12:19 pm
- Forum: Q&A
- Topic: AVB VendorID
- Replies: 4
- Views: 12001
Re: AVB VendorID
Every AVB endpoint contains an unique Entity ID advertised by 1722.1. This ID is an EUI-64 which is usually computed from the the MAC address of the primary network port on your device. See http://standards.ieee.org/develop/regauth/tut/eui64.pdf If you don't already own a block of MAC addresses, you...
- Wed Sep 28, 2016 4:46 pm
- Forum: Other XMOS Development Kits
- Topic: xCORE-200 MC Audio AVB (AN00203) @ 100 Mbps
- Replies: 4
- Views: 6699
Re: xCORE-200 MC Audio AVB (AN00203) @ 100 Mbps
Try tweaking the 100Mb delay values (350 ns) in the PHY driver in main.xc to get approx the same pdelay value as 1G:
Code: Select all
eth.set_ingress_timestamp_latency(0, LINK_100_MBPS_FULL_DUPLEX, 350);
eth.set_egress_timestamp_latency(0, LINK_100_MBPS_FULL_DUPLEX, 350);
- Wed Sep 28, 2016 3:45 pm
- Forum: Other XMOS Development Kits
- Topic: xCORE-200 MC Audio AVB (AN00203) @ 100 Mbps
- Replies: 4
- Views: 6699
Re: xCORE-200 MC Audio AVB (AN00203) @ 100 Mbps
What's the output if you enable
#define DEBUG_PRINT_AS_CAPABLE 1
in gptp.xc?
#define DEBUG_PRINT_AS_CAPABLE 1
in gptp.xc?
- Sat Mar 12, 2016 1:17 pm
- Forum: Other XMOS Development Kits
- Topic: AVB-DC at < 48kHz?
- Replies: 4
- Views: 5826
Re: AVB-DC at < 48kHz?
OS X currently supports AVB sample rates that are integer multiples of 48 kHz only.
- Sat Mar 12, 2016 1:12 pm
- Forum: Development Tools and Programming
- Topic: Ethernet UDP packets won't send more often than 100ms
- Replies: 4
- Views: 4096
- Thu Aug 20, 2015 10:49 am
- Forum: Q&A
- Topic: Error Building Gigabit AVB example
- Replies: 5
- Views: 6134
Answer 3744
Make sure you're using the latest version v1.0.2 of AN00202.
- Mon Aug 17, 2015 11:17 am
- Forum: Q&A
- Topic: Using I2S on xCore-200 Multichannel Audio Platform
- Replies: 1
- Views: 2388
Answer
Yes, there are through-hole test points on the board labelled LRCLK and SCLK.
- Tue Jul 21, 2015 8:08 pm
- Forum: Development Tools and Programming
- Topic: Adding ethertype filter disables mac address filters
- Replies: 2
- Views: 3425
Re: Adding ethertype filter disables mac address filters
Thanks for the feedback Gerry. We will review the documentation and continue to improve it. With regards to code examples, these are typically delivered through application notes on the website: https://www.xmos.com/support/appnotes?subcategory=Networking%20examples AN00120 and AN00199 have been upd...
- Wed Jul 08, 2015 5:49 pm
- Forum: Other Applications
- Topic: Question about Gigabit-Ethernet-AVB-endpoint-example
- Replies: 4
- Views: 5532
Re: Question about Gigabit-Ethernet-AVB-endpoint-example
Yes MCLK stands for master clock. AVB v6 multiplied the master clock frequency by 2 (24.576 *2) to achieve a 48 to 96 kHz sample rate change. A 49.152 MHz master clock isn't supported by lib_i2s so the master clock is now fixed at a constant frequency and the master clock to bit clock ratio is modif...