BBRAM Module - BBRAM Module - UG1087

Zynq UltraScale+ Devices Register Reference (UG1087)

Document ID: UG1087
Release Date: 2025-06-20
Revision: 1.11

BBRAM Module Description

Module Type	BBRAM Module
Modules of this Type	BBRAM
Base Addresses	0x00FFCD0000 (BBRAM)
Description	Battery Backed RAM

BBRAM Module Register Summary

Register Name	Offset Address	Width	Type	Reset Value	Description
bbram_status	0x0000000000	32	roRead-only	0x00000000	BBRAM Status
bbram_ctrl	0x0000000004	32	woWrite-only	0x00000000	BBRAM Control
pgm_mode	0x0000000008	32	rwNormal read/write	0x00000000	BBRAM Program Mode
bbram_aes_crc	0x000000000C	32	woWrite-only	0x00000000	BBRAM AES Key Integrity Check
bbram_0	0x0000000010	32	woWrite-only	0x00000000	BBRAM Data 0
bbram_1	0x0000000014	32	woWrite-only	0x00000000	BBRAM Data 1
bbram_2	0x0000000018	32	woWrite-only	0x00000000	BBRAM Data 2
bbram_3	0x000000001C	32	woWrite-only	0x00000000	BBRAM Data 3
bbram_4	0x0000000020	32	woWrite-only	0x00000000	BBRAM Data 4
bbram_5	0x0000000024	32	woWrite-only	0x00000000	BBRAM Data 5
bbram_6	0x0000000028	32	woWrite-only	0x00000000	BBRAM Data 6
bbram_7	0x000000002C	32	woWrite-only	0x00000000	BBRAM Data 7
bbram_8	0x0000000030	32	woWrite-only	0x00000000	BBRAM Data 8
bbram_slverr	0x0000000034	32	rwNormal read/write	0x00000000	BBRAM Slave Error Control
bbram_isr	0x0000000038	32	wtcReadable, write a 1 to clear	0x00000000	BBRAM Interrupt Status
bbram_imr	0x000000003C	32	roRead-only	0x00000001	BBRAM Interrupt Mask
bbram_ier	0x0000000040	32	woWrite-only	0x00000000	BBRAM Interrupt Enable
bbram_idr	0x0000000044	32	woWrite-only	0x00000000	BBRAM Interrupt Disable