26.10.3 Block Transfer Source Address

The SRCADDR register offset is relative to (BASEADDR or WRBADDR) + Channel Number * 0x10
Name: SRCADDR
Offset: 0x04
Reset: 0
Property: -

Bit 3130292827262524 
 SRCADDR[31:24] 
Access -------- 
Reset 00000000 
Bit 2322212019181716 
 SRCADDR[23:16] 
Access -------- 
Reset 00000000 
Bit 15141312111098 
 SRCADDR[15:8] 
Access -------- 
Reset 00000000 
Bit 76543210 
 SRCADDR[7:0] 
Access -------- 
Reset 00000000 

Bits 31:0 – SRCADDR[31:0] 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:

    SRCADDR = SRCADDRSTART + BTCNT ⋅ (BEATSIZE + 1) ⋅ 2^STEPSIZE

  • If BTCTRL.STEPSEL = 0:

    SRCADDR = SRCADDRSTART + BTCNT ⋅ (BEATSIZE + 1)

  • SRCADDRSTART 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