Hi !
IFC in GPCM mode, 20 bit address.
The limit size of burst, is it limited by the number of bits on the unmuxed address bus ?
Let say we have a bus with 20 bit,
LSB are connected to A3-A2-A1-A0 and MSB are connected to AD15-0.
In case of 8 bits, the longest burst will be 16 beats.
In case of 16 bits, the longest burst will be 8 beats.
Merci beaucoup, Thank a lot
Is this is correct ?
Please consider that general address connection for the 8-bit data bus is:
IFC_A[11:0] -> A[11:0]
IFC_AD[15:0] -> A[27:12]
and for 16-bit data bus it is:
IFC_A[11:1] -> A[10:0]
IFC_AD[15:0] -> A[26:11]
The GPCM burst length is determined by the CSORn_GPCM[BURST_LEN] - refer to the QorIQ LS2088A Reference Manual, 17.3.6 Chip-Select Option register - GPCM (CSOR0_GPCM - CSOR7_GPCM).