SPRUJ55D September 2023 – July 2025 AM263P2 , AM263P2-Q1 , AM263P4 , AM263P4-Q1
The FSI is capable of transmitting and receiving data on two parallel data lines. When enabled, data bits are split between the data lines while the start of frame, frame type, frame tag, and end of frame fields are identical and complete on each line. The user data, data, and CRC fields are split between the data lines. Starting with the most-significant bit, the odd-numbered bits appear on D0 and even-numbered bits appear on D1.
In the following example, assume the following:
8-bit user data: u7u6u5u4u3u2u1u0
16-bit data: d15d14d13d12…d1d0
8-bit CRC: c7c6c5c4c3c2c1c0
| Idle State | Preamble | SOF | Frame Type | User Data | Data Words | CRC Byte | Frame Tag | EOF | Postamble | Idle State |
|---|---|---|---|---|---|---|---|---|---|---|
| TXD0 | 1111 | 1001 | 0011 | u7u5u3u1 | d15d13…d1 | c7c5c3c1 | xxxx | 0110 | 1111 | |
| TXD1 | 1111 | 1001 | 0011 | u6u4u2u0 | d14d12…d0 | c6c4c2c0 | xxxx | 0110 | 1111 |