htrc11001t/03ee NXP Semiconductors, htrc11001t/03ee Datasheet - Page 9

• Manufacturer Part Number: htrc11001t/03ee
• Description: Hitag Reader Chip
• Manufacturer: NXP Semiconductors

NXP Semiconductors
037031
Product data sheet
PUBLIC
10.3 WRITE_TAG
10.4 READ_PHASE
10.5 SET_SAMPLING_TIME
10.6 GET_SAMPLING_TIME
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:
Table 6.
This command is used to read the antenna´s phase, which is measured at every carrier
cycle. The phase is coded binary in D5 to D0.
Table 7.
This command specifies the demodulator sampling time t
binary in D5 to D0.
Table 8.
This command is used to read back the sampling time ts set with SET_SAMPLING_TIME.
The sampling time is coded binary in D5 to D0.
Table 9.
Bit No.
Command 1
Bit No.
Command 0
Response
Bit No.
Command 1
Bit No.
Command 0
Response
•
•
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
programmed 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.
WRTIE_TAG command
READ_PHASE command
SET_SAMPLING_TIME command
GET_SAMPLING_TIME command
7
7
0
7
7
0
All information provided in this document is subject to legal disclaimers.
6
1
6
0
0
6
0
6
0
0
Rev. 3.1 — 9 February 2010
5
0
5
0
D5
5
D5
5
0
D5
4
-
4
0
D4
4
D4
4
0
D4
037031
-
1
D3
D3
0
D3
3
3
3
3
2
-
2
0
D2
2
D2
2
0
D2
1
-
1
0
D1
1
D1
1
1
D1
0
-
0
0
D0
0
D0
0
0
D0
s
. The sampling time is coded
Remark
no response
Remark
-
-
Remark
no response
Remark
-
-
HTRC110
HITAG reader chip
© NXP B.V. 2010. All rights reserved.
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