iWave iW-RainboW-G18M, Hardware User'S Manual

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i.MX6UL/i.MX6ULL SODIMM SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.6.8 USB 2.0 OTG Interface
i.MX6UL/i.MX6ULL SODIMM SOM supports two High Speed USB 2.0 OTG interfaces (USB1 & USB2) on SODIMM Edge
connector. i.MX6UL/i.MX6ULL CPU ’s USB Controller which has two independent USB On-The-Go (OTG) controller
cores are used for USB OTG interface. Each USB controller core can operate in High Speed operation (480 Mbps), Full
Speed operation (12 Mbps) and Low Speed operation (1.5 Mbps). Also it supports two integrated USB 2.0 PHY
macrocells provides a standard UTM interface to connect directly to a USB connector.
For more details, refer SODIMM Edge connector pins 74, 76, 77, 78, 81, 83 & 200 for USB OTG1 interface and pins 39,
140, 141, 188 & 190 for USB OTG2 interface on Table 5.
Note: Only USB1 interface can be used in i.MX6UL/i.MX6ULL Serial Downloader Boot Mode and USB2 cannot be used.
2.6.9 Dual 10/100Mbps Ethernet
i.MX6UL/i.MX6ULL SODIMM SOM supports two 10/100Mbps Ethernet interfaces on SODIMM Edge connector through
ENET1 and ENET2 interface. The MAC is integrated in the CPU and connected to the external Ethernet PHY on SOM.
Since MAC and PHY are supported on SOM itself, only Magnetics are required on the carrier board. i.MX6UL/i.MX6ULL
SODIMM SOM also supports Link and Speed indication LED control signals to SODIMM Edge.
i.MX6UL/i.MX6ULL SODIMM SOM supports two “KSZ8081RNBI” Ethernet PHY from Micrel. These PHY ’s are interfaced
with CPU using ENET1 and ENET2 interface correspondingly and works at 3.3V IO voltage level. Since this PHY doesn’t
require center tap supply to the magnetics, CTREF voltage to SODIMM Edge is not supported on SOM. It is
recommended that center tap pins of magnetics should be separated from one another and connected through
separate 0.1uF common mode capacitors to ground. The below table provides the compatible magnetics
recommended by PHY Manufacturer.
Table 3: Compatible Magnetics
Part Description Part Number Manufacturer Temperature
RJ45 Magjack with Green, Orange – LED’s. 0821-1X1T-36-F Bel Fuse -40°C to 85°C
RJ45 Magjack with Green, Yellow – LED’s. SI-46001-F Bel Fuse -40°C to 85°C
RJ45 Magjack with Green, Yellow – LED’s. HFJ11-E2450E-L12RL Halo Electronics -40°C to 85°C
RJ45 Magjack with Green, Yellow – LED’s. JX0011D21BNL Pulse Electronics -40°C to 85°C
For more details, refer SODIMM Edge connector pins 2, 4, 6, 8, 11 & 12 for USB ENET1 interface and pins 30, 33 to 37
& 42 to 45 for ENET2 interface on Table 5.
Important Note: ENET2 interface is connected to On SOM Ethernet PHY and also optionally connected from CPU to
SODIMM edge connector. If ENET2 Ethernet PHY is not used on SOM, the same signals which are optionally connected
to SODIMM edge can be used for RMII interface or UART interface (3ports) or Keypad (4x4) interface. Please contact
iWave for more details on this support.