WRCTRL

Write Control

  0x00 32 Mix-Secure 0x00000000  
Parent topic: Register Description

Write Control

Bit  31 30 29 28 27 26 25 24  
                   
Access                   
Reset                   
Bit  23 22 21 20 19 18 17 16  
  KEY[7:0]  
Access  RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW  
Reset  0 0 0 0 0 0 0 0  
Bit  15 14 13 12 11 10 9 8  
  PERID[15:8]  
Access  RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW  
Reset  0 0 0 0 0 0 0 0  
Bit  7 6 5 4 3 2 1 0  
  PERID[7:0]  
Access  RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW RW/RW/RW  
Reset  0 0 0 0 0 0 0 0  

Bits 23:16 – KEY[7:0]: Peripheral Access Control Key

Peripheral Access Control Key

These bits define the peripheral access control key:

ValueNameDescription
0x0 OFF No action
0x1 CLEAR Clear the peripheral write control
0x2 SET Set the peripheral write control
0x3 LOCK Set and lock the peripheral write control until the next hardware reset

Bits 15:0 – PERID[15:0]: Peripheral Identifier

Peripheral Identifier

The PERID represents the peripheral whose control is changed using the WRCTRL.KEY. The Peripheral Identifier is calculated by the following formula:

PERID=32* BridgeNumber + N
Where BridgeNumber represents the Peripheral Bridge Number (0 for Peripheral Bridge A, 1 for Peripheral Bridge B, etc.). N represents the peripheral index from the respective Peripheral Bridge Number, which can be retrieved in the Peripherals Configuration Summary table:
Table 1. PERID Values
Peripheral Bridge Name BridgeNumber PERID Values
A 0 0+N
B 1 32+N
C 2 64+N