Line Buffer Depth Calculation for Versal AI Edge Series Gen2 and Versal Prime Series Gen 2 Devices - Line Buffer Depth Calculation for Versal AI Edge Series Gen2 and Versal Prime Series Gen 2 Devices - 6.0 English - PG232

MIPI CSI-2 Receiver Subsystem Product Guide (PG232)
Document ID
PG232
Release Date
2026-07-08
Version
6.0 English

​For ​Versal AI Edge Series Gen 2 and Versal Prime Series Gen 2 devices, you need to calculate the CSI buffer depth (CSI_BUF_DEPTH) ​based on the ​​data type​ to prevent buffer overflow.​

Condition to Avoid Buffer Overflow – (Number of bytes per line buffer) × CSI_BUF_DEPTH ​>​ 2 × WC (word count)

Example

RAW7 : 21 × CSI_BUF_DEPTH ​>​ 2 × WC
RGB888 : 24*CSI_BUF_DEPTH ​>​ 2*WC

Refer the following table for the number of bytes per line buffer calculations.

Table 1. Number of Bytes Per Line Buffer Calculations
Data Type Bytes in Line Buffer
RGB888​ 24
​RGB565​ 16
​RGB666 18
​RGB555​ 16
​RGB444​ 16
​RAW6​​ 18
RAW7​​ 21
​​RAW8​​ 16
RAW10​​ 20
​RAW12​​ 24
​RAW14​​ 28
​​RAW16 16
​RAW20 20
​​RAW24​ 24
​​YUV422-8bit 16
​YUV422-10bit​ 20
​YUV420-8bit 16