Datasheet

PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family
DS60001320B-page 96 Preliminary  2015 Microchip Technology Inc.
REGISTER 4-8: SBTxREGy: SYSTEM BUS TARGET ‘x’ REGION ‘y’ REGISTER 
(‘x’ = 0-13; ‘y’ = 0-8)
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
BASE<21:14>
23:16
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
BASE<13:6>
15:8
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R-0 U-0
BASE<5:0> PRI —
7:0
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 U-0
SIZE<4:0> — — —
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared
bit 31-10 BASE<21:0>: Region Base Address bits
bit 9 PRI: Region Priority Level bit
1 = Level 2
0 = Level 1
bit 8 Unimplemented: Read as ‘0’
bit 7-3 SIZE<4:0>: Region Size bits
Permissions for a region are only active is the SIZE is non-zero.
11111 = Region size = 2
(SIZE – 1)
x 1024 (bytes)
•
•
•
00001 = Region size = 2
(SIZE – 1)
x 1024 (bytes)
00000 = Region is not present
bit 2-0 Unimplemented: Read as ‘0’
Note 1: Refer to Table 4-6 for the list of available targets and their descriptions.
2: For some target regions, certain bits in this register are read-only with preset values. See Table 4-6 for
more information.