Datasheet

595
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
31.9.17 SSC Write Protect Mode Register
Name: SSC_WPMR
Address: 0x400040E4
Access: Read-write
Reset: See Table 31-5
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x535343 (“SSC” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x535343 (“SSC” in ASCII).
Protects the registers:
• “SSC Clock Mode Register” on page 575
• “SSC Receive Clock Mode Register” on page 576
• “SSC Receive Frame Mode Register” on page 578
• “SSC Transmit Clock Mode Register” on page 580
• “SSC Transmit Frame Mode Register” on page 582
• “SSC Receive Compare 0 Register” on page 586
• “SSC Receive Compare 1 Register” on page 586
• WPKEY: Write Protect KEY
Should be written at value 0x535343 (“SSC” in ASCII). Writing any other value in this field aborts the write operation of the WPEN
bit. Always reads as 0.
31 30 29 28 27 26 25 24
WPKEY
23 22 21 20 19 18 17 16
WPKEY
15 14 13 12 11 10 9 8
WPKEY
76543210
———————WPEN