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參數資料
| 型號： | TRF7961RHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 20/52頁 |
| 文件大小： | 1023K |
| 代理商： | TRF7961RHBR |
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www.ti.com
SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
5.3.2
Control Registers – Sub Level Configuration Registers
Table 5-12. ISO14443B TX Options (02h)
Selects the ISO subsets for ISO14443B – TX
Register default is set to 0x00 at POR = H or EN = L
Bit
Bit Name
Function
Comments
B7
egt2
TX EGT time select MSB
Three bit code defines the number of etu (0-7) which
separate two characters. ISO14443B TX only
B6
egt1
TX EGT time select
B5
egt0
TX EGT time select LSB
B4
eof_l0
1 = EOF,
0 length 11 etu
ISO14443B TX only
0 = EOF,
0 length 10 etu
B3
sof_l1
1 = SOF,
1 length 03 etu
0 = SOF,
1 length 02 etu
B2
sof _l0
1 = SOF,
0 length 11 etu
0 = SOF,
0 length 10 etu
B1
l_egt
1 = EGT after each byte
0 = EGT after last byte is omitted
B0
Unused
Table 5-13. ISO 14443A High-Bit-Rate Options (03h)
Parity
Register default is set to 0x00 at POR = H, or EN = L and at each write to ISO control register
Bit
Bit Name
Function
Comments
B7
dif_tx_br
TX bit rate different than RX bit rate enable
Valid for ISO14443A/B high bit rate
B6
tx_br1
TX bit rate
tx_br1 = 0, tx_br = 0
106 kbps
tx_br1 = 0, tx_br = 1
212 kbps
B5
tx_br0
tx_br1 = 1, tx_br = 0
424 kbps
tx_br1 = 1, tx_br = 1
848 kbps
B4
parity-2tx
1 = parity odd except last byte which is even for TX
For 14443A high bit rate, coding and decoding
B3
parity-2rx
1 = parity odd except last byte which is even for RX
B2
Unused
B1
Unused
B0
Unused
Table 5-14. TX Timer H-Byte (04h)
Register default is set to 0xC2 at POR = H or EN = L and at each write to ISO control register
Bit
Bit Name
Function
Comments
B7
Tm_st1
Timer start condition
tm_st1 = 0, tm_st0 = 0
beginning of TX SOF
tm_st1 = 0, tm_st0 = 1
end of TX SOF
B6
Tm_st0
Timer start condition
tm_st1 = 1, tm_st0 = 0
beginning of RX SOF
tm_st1 = 1, tm_st0 = 1
end of RX SOF
B5
Tm_lengthD
Timer length MSB
B4
Tm_lengthC
Timer length
B3
Tm_lengthB
Timer length
B2
Tm_lengthA
Timer length
B1
Tm_length9
Timer length
B0
Tm_length8
Timer length LSB
Copyright 2006–2010, Texas Instruments Incorporated
System Description
27
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