NEC VR4181 mPD30181 User Manual page 165

Bit Name
4 FRMDIR
3 Reserved
2 RXFIFOF
1 RXFIFOE
0 RXBUSY
CHAPTER 8 CLOCKED SERIAL INTERFACE UNIT (CSI)
FRM input pin status
0 : Low level (transmit direction)
1 : High level (receive direction)
0 is returned after read
CSI receive FIFO full status. This bit is set to 1 when the receive FIFO reaches to
the full level defined by RFIFOT bits.
0 : Receive FIFO not full
1 : Receive FIFO full
CSI receive FIFO empty status. This bit is set to 1 when the receive FIFO
contains no valid data.
0 : Receive FIFO not empty
1 : Receive FIFO empty
CSI receive shift register status
0 : Idle
1 : Character reception in progress
User's Manual U14272EJ3V0UM
Function
(2/2)
165