PD72042B_15 Datasheet, PDF (41/92 Pages) Renesas Technology Corp – LSI DEVICE FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL

µPD72042B
STR
Status register
Address : 0000B (0H)
Read/write : Read
When reset : 0101××××B
STR is a one-byte read register used to indicate the states of TBF and RBF.
b7
b6
b5
b4
b3
TFL TEP RFL REP
—
b2
b1
—
—
b0
— STR
[TFL]
1 : TBF is full.
0 : TBF is not full. The microcomputer can load data into TBF.
[TEP]
1 : TBF is empty. The microcomputer can load initial data into TBF.
0 : TBF is not empty.
[RFL]
1 : RBF is full.
0 : RBF is not full.
[REP]
1 : RBF is empty.
0 : RBF is not empty. The microcomputer can read data from RBF.
Data Sheet S13990EJ3V0DS
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