Peripherals—IP2022 User’s Manual 280 www.ubicom.com 4.6.5 SxRBUFH/SxRBUFL Register 16-bit register pair for unloading received data. The RXBF bit in
the SxINTF register indicates when new data has been loaded into
this register. If the corresponding bit in the SxINTE register is set,
an interrupt is generated. 4.6.6 SxRCFG Register 7 6 5 4 0 MASSEL   SYNCDETEN   RPOREV RXSCNT4:0 Name Description MASSEL 10Base-T mode:           0 =   Normal polarity detected
          1 =   Reverse polarity detected
GPSI or SPI mode: 0 =   Slave mode
1 =   Master mode SYNCDETEN Synchronization byte detection enable (USB mode only) 0 =   Synchronization byte detection enabled
1 =   Synchronization byte detection disabled RPOREV Receive data polarity reversal select 0 =   Data polarity uninverted
1 =   Data polarity inverted RXSCNT4:0 Receive shift count, specifies number of bits to receive