µPD16835

19

<Fifth byte>

The fifth byte selects a parameter to be output to the EXTOUT pin (logic operation monitor pin). Input data to

bits D0 to D6 of this byte. Bit D7 is fixed to “0”. There are two EXTOUT pins. EXTOUT

α indicates the operating

status of

α ch, and EXTOUT β indicates that of β ch. The relationship between each bit and each EXTOUT pin

is as shown in Table 4.

Table 4. Fifth Byte Data Configuration (Initial data)

Bit

Data

EXTOUT

α

EXTOUT

β

D7

0

Not used

Not used

D6

0 or 1

ENABLE

α

ENABLE

β

D5

0 or 1

ROTATION

α

ROTATION

β

D4

0 or 1

PULSEOUT

α

PULSEOUT

β

D3

0 or 1

FF7

α

FF7

β

D2

0 or 1

FF3

α

FF3

β

D1

0 or 1

CHECKSUM

FF2

β

D0

0 or 1

CHOPPING

FF1

β

The checksum bit is cleared to “0” in the event of an error. Normally, it is “1”.

If two or more signals that output signals to EXTOUT

α and EXTOUT β are selected, they are positively ORed

for output.

The CHOPPING signal is not output in internal oscillation mode.

The meanings of the symbols listed in Table 4 are as follows:

ENABLE:

Output setting (H: Conducts, L: Stops)

ROTATION:

Rotation direction (H: Reverse (CCW), L: Forward (CW))

PULSEOUT: Output pulse signal

FF7:

Presence/absence of pulse in LATCH cycle (Outputs H level if output pulse information exists in

standard data.)

FF3:

Pulse gate (output while pulse exists)

FF2:

Outputs H level during start-up wait time + start-up drive wait time

FF1:

Outputs H level during start-up wait time

CHECKSUM: Checksum output (H: when normal data is transmitted, L: when abnormal data is transmitted)

CHOPPING: Chopping wave output (in original oscillation mode only)