Datasheet

607
32072H–AVR32–10/2012
AT32UC3A3
25.7.9 Baud Rate Generator Register
Name: BRGR
Access Type: Read-write
Offset: 0x20
Reset Value: 0x00000000
This register can only be written if write protection is disabled in the “Write Protect Mode Register” (WPMR.WPEN is zero).
• FP: Fractional Part
0: Fractional divider is disabled.
1 - 7: Baud rate resolution, defined by FP x 1/8.
• CD: Clock Divider
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
––––– FP
15 14 13 12 11 10 9 8
CD[15:8]
76543210
CD[7:0]
Table 25-24. Baud Rate in Asynchronous Mode (MR.SYNC is 0)
CD OVER = 0 OVER = 1
0 Baud Rate Clock Disabled
1 to 65535
Table 25-25. Baud Rate in Synchronous Mode (MR.SYNC is 1) and SPI Mode(MR.MODE is 0xE or 0xF)
CD Baud Rate
0 Baud Rate Clock Disabled
1 to 65535
Baud Rate
Selected Clock
16 CD⋅
--------------------------------------- -=
Baud Rate
Selected Clock
8CD⋅
--------------------------------------- -=
Baud Rate
Selected Clock
CD
--------------------------------------- -=