HTRC11001T 查看數據表（PDF） - Philips Electronics
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HTRC11001T Datasheet PDF : 20 Pages
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Philips Semiconductors
HITAG reader chip
Product specification
HTRC11001T
8.8 Commands
Table 1 Summary of the HTRC11001T command set
COMMAND NAME
READ_TAG
WRITE_TAG_N
WRITE_TAG
READ_PHASE
SET_SAMPLING_TIME
GET_SAMPLING_TIME
SET_CONFIG_PAGE
GET_CONFIG_PAGE
BIT 7 BIT 6 BIT5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
MSB
LSB
REMARK
1
1
1
−
−
−
−
− READ_TAG mode
0
0
0
1 N3 N2 N1 N0 WRITE_TAG mode with
pulse width programming
1
1
0
−
−
−
−
− WRITE_TAG mode
0
0
0
0
1
0
0
0 read command
0
0 D5 D4 D3 D2 D1 D0 response
1
0 D5 D4 D3 D2 D1 D0
0
0
0
0
0
0
1
0 read command
0
0 D5 D4 D3 D2 D1 D0 response
0
1 P1 P0 D3 D2 D1 D0 4 × 4 configuration bits
available
0
0
0
0
0
1 P1 P0 read command
X3 X2 X1 X0 D3 D2 D1 D0 response
8.8.1 COMMAND READ_TAG
NAME
Command bits
BIT 7
1
BIT 6
1
BIT 5
1
BIT 4
−
BIT 3
−
BIT 2
−
BIT 1
−
BIT 0
−
This command is used to read the demodulated bit stream from a transponder.
After the assertion of the three command bits the HTRC11001T instantaneously switches to the READ_TAG mode and
transmits the demodulated, filtered and digitized data to the microcontroller. This data should be decoded by the
microcontroller.
The READ_TAG mode is terminated by a LOW-to-HIGH transition on pin SCLK.
8.8.2 COMMAND WRITE_TAG_N
NAME
Command bits
BIT 7
0
BIT 6
0
BIT 5
0
BIT 4
1
BIT 3
N3
BIT 2
N2
BIT 1
N1
BIT 0
N0
This command is used to write data to a transponder.
If bits N3 to N0 are set to 0000, the signal on pin DIN is transparently switched to the drivers. A HIGH level on pin DIN
corresponds to antenna drivers switched off and a LOW level corresponds to antenna drivers switched on.
For any binary number N between 0001 and 1111, the drivers are switched off at the next positive transition on pin DIN.
This state is held for a time interval t = N × T0 (for T0 = 8 µs). This method relaxes the timing resolution requirements to
the microcontroller and to the software implementation while providing an exact, selectable write pulse timing.
The WRITE_TAG mode is terminated immediately by a LOW- to-HIGH transition on pin SCLK.
2001 Nov 23
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