NEC UPD98413 User Manual page 22

Pin Name Serial No.
RERR
RVAL
RSX
22
CHAPTER 2 PIN FUNCTION
Address No. I/O Level
O
LVTTL
O
LVTTL
O
LVTTL
PRELIMINARY
Function
Receive error indicator signal.
Signal indicating that the packet being transferred is an
abort packet and should be discarded. Upon detecting a
reception FIFO overflow, FCS error, or abort sequence,
the µPD98413 causes RERR to go high. RERR and
REOP must be asserted at the same time.
Receive data valid signal.
Indicates whether the receive data (RDAT) and other
signals are valid. When RVAL is high, the RDAT, RMOD,
RSOP, REOP, RERR, and RPRTY signals are valid. RSX
is valid when RVAL is low.
Receive start of transfer.
Signal for controlling the port address specification using
RDAT[7:0] at the start of transfer. When RSX is high and
RVAL is low, a port address can be output to RDAT[7:0] to
select the port used to start transfer.
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