htrc110 NXP Semiconductors, htrc110 Datasheet - Page 12

• Manufacturer Part Number: htrc110
• Description: Hitag Reader Chip
• Manufacturer: NXP Semiconductors

HTRC110 Hitag Reader Chip
9.3. WRITE_TAG
This is the 3 bit short form of the previously described command WRITE_TAG_N. It allows to
switch into WRITE_TAG-mode with a minimum communication time.
The behaviour of the WRITE_TAG command is identical to WRITE_TAG_N with two exceptions:
9.4. READ_PHASE
This command is used to read the antenna´s phase, which is measured at every carrier cycle. The
phase is coded binary in D5-D0.
9.5. SET_SAMPLING_TIME
This command specifies the demodulator sampling time t
D5-D0.
9.6. GET_SAMPLING_TIME
• WRITE_TAG-mode is entered after assertion of the 3rd command bit.
• No N parameter is specified with this command; instead the N value, which was pro-
grammed with the most recent WRITE_TAG_N command, is used. If no WRITE_TAG_N
was issued so far, a default N=0 (transparent mode) will be assumed.
Table 6: SET_SAMPLING_TIME Command
Table 3: WRITE_TAG_N Command
Table 5: READ_PHASE Command
Table 4: WRITE_TAG Command
Page 12 of 30
Rev. 3.0
s
. The sampling time is coded binary in
July 2006