AMIS30621C6217RG ON Semiconductor, AMIS30621C6217RG Datasheet - Page 37

• Manufacturer Part Number: AMIS30621C6217RG
• Description: IC MOTOR STEPPER DVR/CTLR 20SOIC
• Manufacturer: ON Semiconductor
• Type: Micro Stepping Motor Driverr

Specifications of AMIS30621C6217RG

• Number Of Outputs: 4
• Voltage - Supply: 6.5 V ~ 29 V
• Operating Temperature: -40°C ~ 165°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 6.5 V to 29 V
• Supply Current: 800 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Applications: -
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Reading Frames
That is: the master initiates the frame (synchronization field
+ identifier field), and one slave sends back the data field
together with the check field. Hence, two types of identifiers
can be used for a reading frame:
•
•
NOTES:
The reading frames, used with the AMIS−30621, are the
following:
A reading frame uses an in−frame response mechanism.
Direct ID, which points at a particular slave node,
indicating at the same time which kind of information
is awaited from this slave node, thus triggering a
specific command. This ID provides the fastest access
to a read command but is forbidden for any other
action.
Indirect ID, which only specifies a reading command,
the physical address of the slave node that must answer
having been passed in a previous writing frame, called
a preparing frame. Indirect ID gives more flexibility
than a direct one, but provides a slower access to a read
command.
Type #5: two, four or eight Data bytes reading frame
1. A reading frame with indirect ID must always be
2. A reading frame will always return the physical
consecutive to a preparing frame. It will otherwise
not be taken into account.
address of the answering slave node in order to
ensure robustness in the communication.
with a direct identifier dynamically assigned to
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Preparing Frames
a particular slave node that it will have to answer in the next
frame (being a reading frame). A preparing frame is needed
when a reading frame does not use a dynamically assigned
direct ID. Preparing and reading frames must be
consecutive. A preparing frame will contain the physical
address of the LIN slave node that must answer in the
reading frame and will also contain a command indicating
which kind of information is awaited from the slave.
of type #7 or type #8 described below.
A preparing frame is a frame from the master that warns
The preparing frames used with the AMIS−30621 can be
Type #6: eight Data bytes reading frame with 0x3D
Type #7: two data bytes writing frame with
a particular slave node together with an
application command. A preparing frame is not
needed.
identifier. This is intrinsically an indirect type,
needing therefore a preparation frame. It has the
advantage to use a reserved identifier. (Note:
because of the parity calculation done by the
master, the identifier becomes 0x7D as physical
data over the bus).
dynamically assigned identifier. The identifier
of the preparing frame has to be assigned to
ROM pointer 1000, see Table 28.