SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
The Secondary Transfer Request field allows the user to specify if the TR requires an additional TR located in memory. If this is used then the address given in the TR is the pointer to the Secondary TR and the secondary TR will have a pointer to the actual final TR.
Encoding | Size | Definition |
---|---|---|
0 | 0 | The TR does not require a secondary TR |
1 | 64 bytes | The TR will fetch a 64-byte Secondary TR prior to the initial read. |
2 | 128 bytes | The TR will fetch a 128-byte Secondary TR prior to the initial read. |
3 | TBD | Reserved for future use |