25.10.3 Block Transfer Source Address

This bit field holds the block transfer source address.

When source address incrementation is disabled (BTCTRL.SRCINC=0), SRCADDR corresponds to the last beat transfer address in the block transfer.

When source address incrementation is enabled (BTCTRL.SRCINC=1), SRCADDR is calculated as follows:

If BTCTRL.STEPSEL=1:

$\mathrm{SRCADDR}={\mathrm{SRCADDR}}_{START}+BTCNT\cdot (BEATSIZE+1)\cdot 2^{\mathrm{STEPSIZE}}$

If BTCTRL.STEPSEL=0:

$\mathrm{SRCADDR}={\mathrm{SRCADDR}}_{START}+BTCNT\cdot (BEATSIZE+1)$

• SRCADDR_START is the source address of the first beat transfer in the block transfer
• BTCNT is the initial number of beats remaining in the block transfer
• BEATSIZE is the configured number of bytes in a beat
• STEPSIZE is the configured number of beats for each incrementation