(no commit message)

[libreriscv.git] / shakti / m_class / ULPI.mdwn

diff --git a/shakti/m_class/ULPI.mdwn b/shakti/m_class/ULPI.mdwn
index b9cfe25cd6d84965946b60e645230e8b51abf9d8..483cfc6876f6c11eefb1d965602d5854b424cbe1 100644 (file)
--- a/shakti/m_class/ULPI.mdwn
+++ b/shakti/m_class/ULPI.mdwn
@@ -1,14 +1,26 @@
 # USB2 (ULPI)
 
-# Requirements
+## Requirements
 * PHY (to be determined)
 * DDR mode
 * ...
 
-# LICENSE
+## LICENSE
 BSD I guess...(fix me)
 
-# reference
+## Useful resources
+
+![UTMI_interface](https://www.crifan.com/files/pic/serial_story/other_site/p_blog_bb.JPG)
+
+![UTMI+levels](https://www.crifan.com/files/pic/serial_story/other_site/p_blog_aa.JPG)
+
+![UTMI+level3_interface](https://www.crifan.com/files/pic/serial_story/other_site/p_blog_cc.JPG)
+
+![LPI_signals](https://www.crifan.com/files/pic/serial_story/other_site/p_blog_dd.JPG)
+
+![LPI_signals_table](https://www.crifan.com/files/pic/serial_story/other_site/p_blog_dd.JPG)
+
+## reference
 * <https://opencores.org/project,ulpi_wrapper> (GPL'd)
 * <https://github.com/mossmann/daisho/blob/master/sw/fpga/common/usb3/usb2_ulpi.v> (BSD)
 * <https://opencores.org/project,usb>