Cypress FM4 Series - DESTP Register

CHAPTER 11: DSTC
558 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
5.2 DESTP Register
The DESTP (Descriptor top address) Register sets the start address of the DES area.
Register configuration
Address: +0x00
bit
31
0
Field
DESTP[31:0]
Attribute
R/W
Initial value
0x00000000
Register function
The DSTC refers to and updates the DES located at the address of "DESTP + DESP". Set the DES area
in a memory area that is readable and writable. Align the DES area to the word boundary. Always write
"00" to the lower 2 bits in the DESTP Register. The DES area must be located within a 4096-word (16 KB)
area starting from the DESTP. The DESTP Register cannot be set to a value larger than "0xFFFFFFF0".
Set the DESTP Register when the DSTC is in the normal state and is doing initial settings. The value of
this register cannot be modified when the DSTC is executing a transfer. After the value of this register has
been modified, the DSTC cannot execute any normal transfer.
bit[31:0] DESTP (Descriptor top address)
Access
Function
Writing
A write access to these bits sets the start address of the DES area.
Reading
A read access to these bits reads the value of these bits.