Fujitsu 8FX User Manual

MB95630H Series
400 FUJITSU SEMICONDUCTOR LIMITED MN702-00009-2v0-E
CHAPTER 21 MULTI-PULSE GENERATOR
21.5 Operations
21.5.3 Operation of 16-bit MPG Output Data Buffer
Register (Upper/Lower) (OPDBRHx/OPDBRLx)
The 16-bit MPG output data buffer register (upper/lower) (OPDBRHx/OPDBRLx)
are composed of 12 pairs of registers. By loading different OPDBRHx and
OPDBRLx registers into the 16-bit MPG output data register (upper/lower)
(OPDUR/OPDLR), various kinds of waveform are output at the multi-pulse
generator output (OPT5 to OPT0).
■ Operation of Output Data Buffer Register
The data in the 16-bit MPG output data buffer register (upper/lower) (OPDBRHx/OPDBRLx)
whose address specified by the BNKF bit and the RDA[2:0] bits is transferred to the 16-bit
MPG output data register (upper/lower) (OPDUR/OPDLR) at the write timing generated by the
data write control unit.
The BNKF bit and the RDA[2:0] bits in the 16-bit MPG output data buffer register (upper)
(OPDBRHx) decide the order of data transfer to the 16-bit MPG output data register (upper/
lower) (OPDUR/OPDLR), and the OPx1/OPx0 bits decide the shape of the output waveform.
The output waveform is updated automatically as long as the write timing (WTO) is generated.
An example of setting the 16-bit MPG output data buffer register (upper/lower) (OPDBRH,
OPDBRL) is shown in Table 21.5-3.
Table 21.5-3 16-bit MPG output data buffer register (upper/lower) (OPDBRH, OPDBRL)
No. 0123456789AB
BNKF 0000010XX011
RDA2 1100100XX100
RDA1 0010111XX010
RDA0 0111000XX011
OP51 0001000XX001
OP50 0011000XX011
OP41 1000010XX000
OP40 1100010XX100
OP31 0000001XX000
OP30 0000101XX000
OP21 0000100XX000
OP20 1000110XX000
OP11 0010000XX010
OP10 0010001XX010
OP01 0100000XX100
OP00 0101000XX100
OPBDR No. Sequence 4 5 3 1 6 A 2 X X 4 B 9
OPT5 Output L L PPG H L L L X X L PPG H
OPT4 Output H PPG L L L H L X X PPG L L
OPT3 Output L L L L PPG L H X X L L L
OPT2 Output PPG L L L H PPG L X X L L L
OPT1 Output LLHLLLPPGXXLHL
OPT0 Output L H L PPG L L L X X H L L

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English