Intel PXA255 - Manual (Page 329)

Intel® PXA255 Processor Developer’s Manual 8-19
Synchronous Serial Port Controller
8.7.4.8 Receive FIFO Level (RFL)
This bit indicates the one less than number of entries in the Receive FIFO.
This is a read/write register. Ignore reads from reserved bits. Write zeros to reserved bits.
8.8 SSP Controller Register Summary
Table 8-7 shows the SSP registers associated with the SSP controller and their physical addresses.
Table 8-7. SSP Controller Register Summary
Address Abbreviation Full Name
0x4100_0000 SSCR0 SSP Control Register 0
0x4100_0004 SSCR1 SSP Control Register 1
0x4100_0008 SSSR SSP Status Register
0x4100_000C — reserved
0x4100_0010 SSDR (Write / Read) SSP Data Write Register/SSP Data Read Register