A good PCB layout is crucial for the ISP1301BS. Ensure a solid ground plane, keep the analog and digital sections separate, and use a 4-layer board with a dedicated power plane. Minimize trace lengths and use 50-ohm impedance-controlled lines for high-speed signals.
The ISP1301BS requires a specific power-up sequence: VDDIO, VDD, and then VBAT. Ensure that VDDIO is powered up first, followed by VDD, and finally VBAT. This sequence is critical to prevent damage to the device.
The ISP1301BS supports data transfer rates up to 480 Mbps in USB 2.0 mode. However, the actual transfer rate may be limited by the host controller, cable quality, and other system factors.
The ISP1301BS has built-in support for USB suspend and resume. To implement this, connect the SUSPEND pin to the host controller's suspend signal, and ensure that the device is properly configured to enter low-power mode during suspend.
To minimize EMI and ESD issues, use a shielded cable, add EMI filters, and ensure proper grounding. Implement ESD protection on the USB lines using TVS diodes or other protection devices. Follow the recommended layout and routing guidelines to reduce emissions.
