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2-24 Intel® PXA255 Processor Developer’s Manual
System Architecture
0x4000_02EC DCMD14 DMA Command Address Register Channel 14
0x4000_02F0 DDADR15 DMA Descriptor Address Register Channel 15
0x4000_02F4 DSADR15 DMA Source Address Register Channel 15
0x4000_02F8 DTADR15 DMA Target Address Register Channel 15
0x4000_02FC DCMD15 DMA Command Address Register Channel 15
Full Function
UART
0x4010_0000
0x4010_0000 FFRBR Receive Buffer Register (read only)
0x4010_0000 FFTHR Transmit Holding Register (write only)
0x4010_0004 FFIER Interrupt Enable Register (read/write)
0x4010_0008 FFIIR Interrupt ID Register (read only)
0x4010_0008 FFFCR FIFO Control Register (write only)
0x4010_000C FFLCR Line Control Register (read/write)
0x4010_0010 FFMCR Modem Control Register (read/write)
0x4010_0014 FFLSR Line Status Register (read only)
0x4010_0018 FFMSR Modem Status Register (read only)
0x4010_001C FFSPR Scratch Pad Register (read/write)
0x4010_0020 FFISR Infrared Selection Register (read/write)
0x4010_0000 FFDLL Divisor Latch Low Register (DLAB = 1) (read/write)
0x4010_0004 FFDLH Divisor Latch High Register (DLAB = 1) (read/write)
Bluetooth
UART
0x4020_0000
0x4020_0000 BTRBR Receive Buffer Register (read only)
0x4020_0000 BTTHR Transmit Holding Register (write only)
0x4020_0004 BTIER Interrupt Enable Register (read/write)
0x4020_0008 BTIIR Interrupt ID Register (read only)
0x4020_0008 BTFCR FIFO Control Register (write only)
0x4020_000C BTLCR Line Control Register (read/write)
0x4020_0010 BTMCR Modem Control Register (read/write)
0x4020_0014 BTLSR Line Status Register (read only)
0x4020_0018 BTMSR Modem Status Register (read only)
0x4020_001C BTSPR Scratch Pad Register (read/write)
0x4020_0020 BTISR Infrared Selection Register (read/write)
0x4020_0000 BTDLL Divisor Latch Low Register (DLAB = 1) (read/write)
0x4020_0004 BTDLH Divisor Latch High Register (DLAB = 1) (read/write)
I2C 0x4030_0000
0x4030 1680 IBMR I2C Bus Monitor Register - IBMR
0x4030 1688 IDBR I2C Data Buffer Register - IDBR
0x4030 1690 ICR I2C Control Register - ICR
0x4030 1698 ISR I2C Status Register - ISR
0x4030 16A0 ISAR I2C Slave Address Register - ISAR
Table 2-8. System Architecture Register Address Summary (Sheet 4 of 12)
Unit Address Register Symbol Register Description