User's Manual

MPR series User’s Manual: Draft version 0.95 11/4/04 page 48
1.6.7.2.3.4 Class0 Plus Write ACK Subcommand (03
h
)
Performs a Class 0 Plus (Impinj/ZUMA) Write ACK command. This subcommand only operates on
singulated tags.
Request Packet
Opcode
0x18
Command Data
Antenna
1 byte
0x00: Ant A
0x01: Ant B
RF Power Level
1 byte
0x01 (min) – 0xFF (max)
Singulation
(Negotiation
Page) Field
1 byte
0x00 (ID0)
0x01 (ID1)
0x02 (ID2)
Subcommand
1 byte
0x03
Row Number
1 byte
0-15
Row Data
3 bytes
18 bits are right justified in bytes, MSByte is sent first
Filter Bit Count
1 byte
0-64 or 0-96
Filter Bits
0-12 bytes
Tag ID filter bits are left justified in bytes, MSByte is sent first
Note: If writing to row 0 or at the completion of writing the Tag EPC and CRC, the tag MUST then
complete a power cycle.
Note: Singulation Fields ID1 & ID2 are not implemented yet.
Response Packet
Status
0x00 (Complete)
Total Tags reported
2 bytes
Under-run error count
2 bytes
Tag CRC error count
2 bytes