Rev. 1.0, 02/00, page 593 of 1141
Bit 7
FIFO2 Full Flag (FLB): When the FLB bit is 1, it indicates that the FIFO2 is full of the
timing pattern data and the output pattern data. If a write is attempted in this state, the write
operation becomes invalid, an interrupt is generated, the OVWB flag (bit 3) is set to 1, and the
write data is lost. Wait until space becomes available in the FIFO2, then write again.
Bit 7
FLB
Description
0
FIFO2 is not full, and can accept data input.
(Initial value)
1
FIFO2 is full of data.
Bit 6
FIFO1 Full Flag (FLA): When the FLA bit is 1, it indicates that the FIFO1 is full of the
timing pattern data and the output pattern data. If a write is attempted in this state, the write
operation becomes invalid, an interrupt is generated, the OVWA flag (bit 2) is set to 1, and the
write data is lost. Wait until space becomes available in the FIFO1, then write again.
Bit 6
FLA
Description
0
FIFO1 is not full, and can accept data input.
(Initial value)
1
FIFO1 is full of data.
Bit 5
FIFO2 Empty Flag (EMPB): Indicates that FIFO2 has no data, or that all the data has
been output in single mode.
Bit 5
EMPB
Description
0
FIFO2 contains data.
1
FIFO2 contains no data.
(Initial value)
Bit 4
FIFO1 Empty Flag (EMPA): Indicates that FIFO1 has no data, or that all the data has
been output in single mode.
Bit 4
EMPA
Description
0
FIFO1 contains data.
1
FIFO1 contains no data.
(Initial value)