Description:The 9FGL0841/51 devices are 8-output 3.3V PCIe Gen1–5 clock generators. Each output has a dedicated OE# pin supporting PCIe CLKREQ# functionality. Two different spread spectrum levels, in addition to spread off, are supported. The 9FGL0841/51 supports PCIe Gen1–5 Common Clocked architectures (CC), PCIe Separate Reference no-Spread (SRNS) and Separate Reference Independent Spread (SRIS) clocking architectures. For information regarding evaluation boards and material, please contact your local sales represent
Renesas provides a recommended PCB layout guide in their application note (R01AN4301EJ0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement.
Renesas recommends a specific power sequencing scheme in their application note (R01AN4301EJ0100) to ensure proper device operation. The sequence involves powering up the VCC, then the VDD, and finally the AVCC.
The internal oscillator has a limited frequency range (up to 48 MHz) and may not provide the required accuracy for certain applications. Renesas recommends using an external clock source for frequencies above 48 MHz or when high accuracy is required.
Renesas provides guidelines for low power design in their application note (R01AN4301EJ0100), including techniques such as clock gating, power gating, and voltage scaling. Additionally, the device has built-in low power modes, such as sleep and standby modes.
Renesas provides EMI and EMC design guidelines in their application note (R01AN4301EJ0100), including recommendations for PCB layout, component selection, and shielding. Additionally, the device has built-in EMI reduction features, such as spread spectrum clocking.
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9FGL0851DKILFT Overview
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