Texas Instruments TRF7960 Manual page 26

TRF7960, TRF7961
SLOU186G – AUGUST 2006 – REVISED MAY 2017
Table 6-17 describes the TX Timer L-Byte register. The register default is 0x00 and is reset at POR = H or
EN = L and at each write to the ISO Control register.
BIT BIT NAME FUNCTION
B7 Tm_length7
B6 Tm_length6
B5 Tm_length5
B4 Tm_length4
Timer length. MSB is B7.
B3 Tm_length3
B2 Tm_length2
B1 Tm_length1
B0 Tm_length0
Table 6-18 describes the TX Pulse Length Control register. This register controls the length of TX pulse.
The register default is 0x00 and is reset at POR = H or EN = L and at each write to the ISO Control
register.
Table 6-18. TX Pulse Length Control Register (Address = 06h)
BIT BIT NAME FUNCTION
B7 Pul_p2
B6 Pul_p1
B5 Pul_p0
B4 Pul_c4
B3 Pul_c3
Pulse length. MSB is B7.
B2 Pul_c2
B1 Pul_c1
B0 Pul_c0
Table 6-19 describes the RX No Response Wait Time register. This register defines the time when a no
response interrupt is sent. The default is 0x0E and is reset at POR = H or EN = L and at each write to the
ISO Control register.
Table 6-19. RX No Response Wait Time Register (Address = 07h)
BIT BIT NAME FUNCTION
B7 NoResp7
B6 NoResp6
B5 NoResp5
B4 NoResp4
No response. MSB is B7.
B3 NoResp3
B2 NoResp2
B1 NoResp1
B0 NoResp0
26 Detailed Description
Table 6-17. TX Timer L-Byte Register (Address = 05h)
COMMENTS
The pulse range is 73.7 ns to 18.8 µs (1 to 255), and the step size is 73.7 ns.
All bits low (00) = Pulse length control is disabled
Presets are:
9.44 µs for ISO/IEC 15693
11 µs for Tag-it
2.36 µs for ISO/IEC 14443 A at 106 kbps
1.4 µs for ISO/IEC 14443 A at 212 kbps
737 ns for ISO/IEC 14443 A at 424 kbps
442 ns for ISO/IEC 14443 A at 848 kbps
COMMENTS
Defines the time when the no response interrupt is sent. Time starts from the end of TX
EOF. RX no response wait range is 37.76 µs to 9628 µs (1 to 255), and step size is
37.76 µs.
Presets are:
755 µs for ISO/IEC 15693
1812 µs for ISO/IEC 15693 low data rate
604 µs for Tag-it
529 µs for all other protocols
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COMMENTS
Defines the time when delayed transmission is started. RX wait range is
590 ns to 9.76 ms (1 to 16383), and the step size is 590 ns.
All bits low (00) = Timer is disabled (preset for all protocols)
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