Specify MUX cell library

START tool usage, BFL flow, BII flow, memory grouping, advanced application
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iSTART
Posts: 327
Joined: 08 Dec 2020, 15:53

Specify MUX cell library

Post by iSTART »

[Question] How can I specify our own MUX cell to replace START tool MUX?

[Answer] User can use following steps to replace START tool MUX.
1. In BFL, specify user’s MUX library information file as following.
P1.png
P1.png (31.69 KiB) Viewed 1956 times
P1.png
P1.png (31.69 KiB) Viewed 1956 times
2. In this example, mux_cell.info looks like following picture. The order of cell description is fixed. The items from left to right are "data input1", "data input2", "mux select", "data output".
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P2.png (153.74 KiB) Viewed 1956 times
P2.png
P2.png (153.74 KiB) Viewed 1956 times
3. The generated code looks like following picture. The code “ifdef SYNTHESIS ….” are the generated code according to customer’s MUX cell definition.
P3.png
P3.png (132.98 KiB) Viewed 1956 times
P3.png
P3.png (132.98 KiB) Viewed 1956 times
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