User`s manual

Applilet EZ for HCD Controller
APPENDIX B SERIAL COMMAND MODE COMMUNICATION COMMANDS
R20UT0435EJ1200 Rev. 12.00 44
Jul 31, 2014
 parameter block
1 [byte] data consisting of 8 bits.
This block has no meaning when set to status acquisition (during reception: R/W = 1)
Note 1
. Specify 0x00 for status
acquisition (during reception).
When it is set to setting (during transmission: R/W = 0), it has the following meaning according to “Command (5 bits)”
of the command block.
01000 (Duty): During duty setting
This specifies the duty of the channel instructed with “Ch”. A value within the range of 0 to 0xFF (255) can
be specified.
10000 (Status): During status setting
Note 2
This specifies the current status of the target device.
1000 0000 (0x80): Shutdown status (sets the EN pin to low level)
0000 0000 (0x00): Enable status (sets the EN pin to high level)
Notes 1. This has no meaning but it cannot be omitted.
2. Do not use the status command for EZ-0005, which does not use a constant-current driver IC, because no
status acquisition or status specification command is provided in EZ-0005.
B.1.2 Details of basic format 2 (target  host)
 paramet
er block
1 [byte] data consisting of 8 bits.
It is not transmitted when the host device has selected setting (during transmission: R/W = 0).
When status acquisition (during reception: R/W = 1) has been selected, it has the following meaning according to
“Command (5 bits)”.
01000 (Duty): During duty setting
This returns as 1 [byte] data the duty setting value of the channel instructed with “Ch”.
The duty value holds a value within the range of 0 to 0xFF (255).
10000 (Status): During status setting
Note 1
This returns as 1 [byte] data the current status of the target device. The status of the target device is one
of the following.
1000 0000 (0x80): Shutdown status (EN pin: low level)
Note 2
0000 0000 (0x00): Enable status (EN pin: high level)
Notes 1. Do not use the status command for EZ-0005, which does not use a constant-current driver IC, because no
status acquisition or status specification command is provided in EZ-0005.
2. Shutdown status during status acquisition occurs due to the following causes.
 When overheat protection alarm output (SH) of the constant-current driver IC enters an alert state (high
level)
 When Shutdown status has been set by a communication command
In both cases, operation or standby input (EN pin) of the constant-current driver IC becomes low level in
Shutdown status.