參數(shù)資料
型號(hào): TRF7960RHBT
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC32
封裝: 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁(yè)數(shù): 22/52頁(yè)
文件大小: 1023K
代理商: TRF7960RHBT
www.ti.com
SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
Table 5-18. RX Wait Time (08h)
Defines the time after TX EOF when the RX input is disregarded
Register default is set to 0x1F at POR = H or EN = L and at each write to ISO control register.
Bit
Bit Name
Function
Comments
B7
Rxw7
RX wait
Defines the time during which the RX input is ignored.
It starts from the end of TX EOF.
B6
Rxw6
RX wait range is 9.44 ms to 2407 ms (1...255),
B5
Rxw5
Step size 9.44 ms
Preset: 293 ms ISO15693
B4
Rxw4
Preset: 66 ms ISO14443A and B
B3
Rxw3
Preset: 180 ms Tag-It
B2
Rxw2
B1
Rxw1
Table 5-19. Modulator and SYS_CLK Control (09h)
Controls the modulation depth, modulation input and ASK / OOK control
Register default is set to 0x11 at POR = H or EN = L, and at each write to ISO control register, except Clo1 and Clo0.
Bit
Bit Name
Function
Comments
B7
Unused
B6
en_ook_p
1 = enables external selection of ASK or OOK
Valid only when ISO control register (01) is configured to direct mode
modulation
B5
Clo1
SYS_CLK output frequency MSB
Clo1
Clo0
CL_SYS Output state
B4
Clo0
SYS_CLK output frequency LSB
0
disabled
0
1
3.3 MHz
1
0
6.78 MHz
1
13.56 MHz
B3
en_ana
1 = Enables analog output on ASK/OOK pin
For test and measurement
(pin12)
B2
Pm2
Modulation depth MSB
Pm2
Pm1
Pm0
Mod Type and %
0
ASK 10%
B1
Pm1
Modulation depth
0
1
OOK (100%)
B0
Pm0
Modulation depth LSB
0
1
0
ASK 7%
0
1
ASK 8.5%
1
0
ASK 13%
1
0
1
ASK 16%
1
0
ASK 22%
1
ASK 30%
Copyright 2006–2010, Texas Instruments Incorporated
System Description
29
Product Folder Link(s): TRF7960 TRF7961
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