SAM3S8C Atmel Corporation, SAM3S8C Datasheet - Page 868

• Manufacturer Part Number: SAM3S8C
• Manufacturer: Atmel Corporation

34.14.17 HSMCI Write Protect Mode Register
Name:
Address:
Access:
• WP_EN: Write Protection Enable
0 = Disables the Write Protection if WP_KEY corresponds to 0x4D4349 (“MCI’ in ASCII).
1 = Enables the Write Protection if WP_KEY corresponds to 0x4D4349 (“MCI’ in ASCII).
• WP_KEY: Write Protection Key password
Should be written at value 0x4D4349 (ASCII code for “MCI”). Writing any other value in this field has no effect.
Protects the registers:
868
868
•
•
•
•
•
“HSMCI Mode Register” on page 844
“HSMCI Data Timeout Register” on page 846
“HSMCI SDCard/SDIO Register” on page 847
“HSMCI Completion Signal Timeout Register” on page 853
“HSMCI Configuration Register” on page 867
31
23
15
7
SAM3S8/SD8
SAM3S8/SD8
30
22
14
HSMCI_WPMR
0x400000E4
Read-write
6
29
21
13
5
WP_KEY (0x4D => “M”)
WP_KEY (0x43 => C”)
WP_KEY (0x49 => “I”)
28
20
12
4
27
19
11
3
26
18
10
2
25
17
9
1
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
WP_EN
24
16
8
0