Microchip Technology dsPIC30F - Page 82

dsPIC30F Family Reference Manual
DS70050C-page 3-22 © 2004 Microchip Technology Inc.
Register 3-6: XBREV: X Write AGU Bit-Reversal Addressing Control Register
Upper Byte:
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
BREN XB<14:8>
bit 15 bit 8
Lower Byte:
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
XB<7:0>
bit 7 bit 0
bit 15 BREN: Bit-Reversed Addressing (X AGU) Enable bit
1 = Bit-reversed addressing enabled
0 = Bit-reversed addressing disabled
bit 14-0 XB<14:0>: X AGU Bit-Reversed Modifier bits
0x4000 = 32768 word buffer
0x2000 = 16384 word buffer
0x1000 = 8192 word buffer
0x0800 = 4096 word buffer
0x0400 = 2048 word buffer
0x0200 = 1024 word buffer
0x0100 = 512 word buffer
0x0080 = 256 word buffer
0x0040 = 128 word buffer
0x0020 = 64 word buffer
0x0010 = 32 word buffer
0x0008 = 16 word buffer
0x0004 = 8 word buffer
0x0002 = 4 word buffer
0x0001 = 2 word buffer
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 x = Bit is unknown