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SEMI E99-1104 E © SEMI 2000, 2004 13 11.4.10 Write Data 11.4.10.1 Write Data is use d to request a generic block of da ta to an ID Reader/Writer Head. Th is service is required for the Carrier ID Reader/ Writer type and …

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11.4.6 Read Data
11.4.6.1 Read Data is used to request a generic block of data by an ID Reader/Writer Head. This service is required
for the Carrier ID Reader/Writer type and is optional otherwise. The Carrier ID Reader/Writer is not required to
understand the content of the data.
Table 13 Read Data Service Definition
Parameter Req/Ind Rsp/Conf Description
Head ID M M Specifies Head.
DataSeg C - Indicates specific section of data.
DataSize C - Indicates number of bytes to read.
Data - M Data Read from Head.
Result Status - M Result information on the status of the request.
Status - M Status information
11.4.7 Read ID
11.4.7.1 Read ID is used to request the Carrier ID be read by an ID Reader/Writer Head. This service is a
fundamental requirement.
Table 14 Read ID Service Message Parameter Definition
Parameter Req/Ind Rsp/Conf Description
Head ID M M Specifies Head.
Carrier ID - M Carrier ID
Result Status - M Result information on the status of the request.
Status - M Status information
11.4.8 Reset
11.4.8.1 Reset is an optional service used to re-initialize the CIDRW.
Table 15 Reset Service Definition
Parameter Req/Ind Rsp/Conf Description
Result Status - M Result information on the status of the request
11.4.9 Set Attributes
11.4.9.1 Set Attributes is used to set attributes of the CIDRW that have read/write (R/W) access. This is an optional
service. Attempts to set attributes with read-only (RO) access shall be denied. Attribute values returned are those as
read following the set operation.
Table 16 Set Attributes Service Definition
Parameter Req/Ind Rsp/Conf Description
Head ID M M Specifies Head or Subsystem.
Attributes ID M - Attribute Ids
Attribute Values M - Attribute Values
Result Status - M Result information on the status of the request.
Status - M Status information
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© SEMI 2000, 2004 13
11.4.10 Write Data
11.4.10.1 Write Data is used to request a generic block of data to an ID Reader/Writer Head. This service is
required for the Carrier ID Reader/Writer type and is optional otherwise. The Carrier ID Reader/Writer is not
required to understand the content of the data.
Table 17 Write Data Service Definition
Parameter Req/Ind Rsp/Conf Description
Head ID M M Specifies Head.
DataSeg C - Indicates specific section of data.
DataSize C - Indicates number of bytes to read.
Data M - Write Data (from Host).
Result Status - M Result information on the status of the request.
Status - M Status information
11.4.11 Write ID
11.4.11.1 Write ID is used to set the field for Carrier ID to an ID Reader/Writer Head. This service is optional.
This shall be a protected operation that can be performed only in the MAINTENANCE state to prevent accidental
overwriting of the ID field.
Table 18 Write ID Service Definition
Parameter Req/Ind Rsp/Conf Description
Head ID M M Specifies Head.
Data (ID) M - Write ID Data.
Result Status - M Result information on the status of the request
Status - M Status information
11.4.11.2 The field for the Carrier ID shall be located from the first byte to the maximum byte of Carrier ID in the
memory for electric tag.
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11.4.12 Service Operability
11.4.13 Some services are performed by the CIDRW and others are logically performed by the individual heads. It
is expected that the CIDRW will support multiple interleaved transactions to the various independent logical units.
Table 19 shows which of the various services can be performed by the CIDRW when the CIDRW and its heads are
in various individual states. Note that when in the initializing state after powerup or the reset service, the CIDRW
may not be able to communicate.
Table 19 Valid Services per State
Service
Write ID
Write Data
Set Attributes
Reset
Read ID
Read Data
Perform
Diagnostics
Get Status
Get Attributes
ChangeState
CIDRW State
INITIALIZING
OPERATING X X
X X X X X X X
MAINTENANCE X X
X X
(See NOTE 1.)
X X X X
Head State
NOT OPERATING
X
IDLE
X
BUSY
X
NOTE 1: May not be supported by all Readers.
12 Event Notifications
12.1 Event Notification is an optional capability where the CIDRW is able to detect events and report state and
status changes independently of a service request from the upstream controller.
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