HTRC11001T Datasheet, PDF (12/20 Pages) NXP Semiconductors – HITAG reader chip

Philips Semiconductors
HITAG reader chip
Product specification
HTRC11001T
8.8.8
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COMMAND GET_CONFIG_PAGE
NAME
BIT 7 BIT 6
Command bits
0
0
Response bits
X3
X2
BIT 5
0
X1
BIT 4
0
X0
BIT 3
0
D3
BIT 2
1
D2
BIT 1
P1
D1
BIT 0
P0
D0
This command has three functions:
1. Reading back the configuration parameters set by command SET_CONFIG_PAGE
2. Reading back the transmit pulse width programmed with command WRITE_TAG_N
3. Reading the system status information.
Bits P1 and P0 select one of four configuration pages.
The response bits (X3 to X0 and D3 to D0) contains the contents of the selected configuration page in its lower nibble.
For page 0 and page 1 the higher nibble reflects the current setting of the transmit pulse width N.
For page 2 and page 3 the system status information is returned in the higher nibble.
Table 4 Configuration page bit names
COMMAND
PAGE NUMBER
GET_CONFIG_PAGE 0
GET_CONFIG_PAGE 1
GET_CONFIG_PAGE 2
GET_CONFIG_PAGE 3
X3
N3
N3
0 (RFU)
0 (RFU)
X2
N2
N2
0 (RFU)
0 (RFU)
X1
N1
N1
AMPCOMP
AMPCOMP
BIT
X0
N0
N0
ANTFAIL
ANTFAIL
3
2
1
0
D3 D2 D1 D0
D3 D2 D1 D0
D3 D2 D1 D0
D3 D2 D1 D0
Table 5 Description of the configuration page bits
BIT NAME
D3 to D0
N3 to N0
ANTFAIL
AMPCOMP
VALUE
XXXX
XXXX
0
1
0
1
DESCRIPTION
contents of the selected configuration page
current setting of the transmit pulse width
antenna failure
no antenna failure
antenna failure
amplitude comparison result (see also bit ACQAMP in Table 3)
actual data signal amplitude is lower than the stored reference
actual data signal amplitude is higher than the stored reference
2001 Nov 23
12