Texas Instruments TRF7960 Manual page 28

TRF7960
TRF7961
SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
Register default is set to 0x00 at POR = H or EN = L and at each write to ISO control register
Bit Bit Name Function
B7 Tm_length7 Timer length MSB
B6 Tm_length6 Timer length
B5 Tm_length5 Timer length
B4 Tm_length4 Timer length
B3 Tm_length3 Timer length
B2 Tm_length2 Timer length
B1 Tm_length1 Timer length
B0 Tm_length0 Timer length LSB
Controls the length of TX pulse
Register default is set to 0x00 at POR = H or EN = L and at each write to ISO control register.
Bit Bit Name Function
B7 Pul_p2 Pulse length MSB
B6 Pul_p1
B5 Pul_p0
B4 Pul_c4
B3 Pul_c3
B2 Pul_c2
B1 Pul_c1
B0 Pul_c0 Pulse length LSB
Defines the time when no response Interrupt is sent
Default: default is set to 0x0E at POR = H or EN = L and at each write to ISO control register.
Bit Bit Name Function
B7 NoResp7 No response MSB
B6 NoResp6
B5 NoResp5
B4 NoResp4
B3 NoResp3
B2 NoResp2
B1 NoResp1
B0 NoResp0 No response LSB
28 System Description
Table 5-15. TX Timer L-Byte (05h)
Comments
Defines the time when delayed transmission is started.
RX wait range is 590 ns to 9.76 ms (1..16383)
Step size 590 ns
All bits low (00): Timer is disabled.
Preset: 00 all other protocols
Table 5-16. TX Pulse Length Control (06h)
Comments
The pulse range is 73.7 ns to 18.8 μs (1...255), step size 73.7 ns
All bits low (00): pulse length control is disabled
Preset: 9.44 μs ISO15693
Preset: 11 μs Tag-It
Preset: 2.36 μs ISO14443A
Preset: 1.4 μs ISO14443A at 212 kbps
Preset: 737 ns ISO14443A at 424 kbps
Preset: 442 ns ISO14443A at 848 kbps): pulse length control is disabled
Table 5-17. RX No Response Wait Time (07h)
Comments
Defines the time when no response interrupt is sent It starts from the end of TX EOF.
RX no response wait range is 37.76 μs to 962 8μs (1...255),
Step size 37.76 μs
Preset: 755 μs ISO15693
Preset: 1812 μs ISO15693 low data rate
Preset: 604 μs Tag-It
Preset: 529 μs all other protocols
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