Datasheet

40.8.32 ADMA System Address Register
Name: ASAR
Offset: 0x58
Reset: 0x00000000
Property: -
Bit 31 30 29 28 27 26 25 24
ADMASA[31:24]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 23 22 21 20 19 18 17 16
ADMASA[23:16]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8
ADMASA[15:8]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
ADMASA[7:0]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bits 31:0 – ADMASA[31:0] ADMA System Address
This field holds the byte address of the executing command of the descriptor table. At the start of ADMA,
the user must set the start address of the descriptor table. The ADMA increments this register address,
which points to the next Descriptor line to be fetched.
When the ADMA Error (ADMA) status flag rises, this field holds a valid descriptor address depending on
the ADMA Error State (ERRST). The user must program Descriptor Table on 32-bit boundary and set 32-
bit boundary address to this register. ADMA2 ignores the lower 2 bits of this register and assumes it to be
0.
SAM D5x/E5x Family Data Sheet
SD/MMC Host Controller ...
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1380