Quartus® Prime Pro Edition User Guide: Platform Designer

ID 683609
Date 7/08/2024
Public

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5.11.3. Width Adaptation

Platform Designer allows different data width connections with APB. When connecting a wider manager to a narrower APB subordinate, the width adapter converts the wider transactions to a narrower transaction to fit the APB subordinate data width. APB does not support Write Strobe. Therefore, when you connect a narrower transaction to a wider APB subordinate, the subordinate cannot determine which byte lane to write. In this case, the subordinate data may be overwritten or corrupted.