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參數資料
| 型號： | PCT1789N |
| 英文描述： | PCT303DL |
| 中文描述： | PCT303DL |
| 文件頁數： | 27/40頁 |
| 文件大小： | 632K |
| 代理商： | PCT1789N |
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PC-TEL, Inc.
49
1789N0DOCDAT01A-0399
PCT1789N DATA SHEET
303DL C
ONTROL
R
EGISTERS
!
PRELIMINARY
PRELIMINARY
TX/RX Gain Control
(Register 15, R/W)
Reset settings: 00h
Bit Definitions:
IIR Filter Control
(Register 16, R/W)
Reset settings: 08h
Bit Definitions:
TXM
7
ATX[2:0]
5
RXM
3
ARX[2:0]
1
6
4
2
0
Bits
Name
TXM
ATX[2:0]
Description
Transmit mute. 1 = Mutes the transmit signal.
Analog transmit attenuation.
7
6:4
NOTE: Register 13 bit 0 (ATX) must be 0 for these bits to work as expected.
Unpredictable results can occur if ATX is 1 and these bits are non-zero.
Receive mute. 1 = Mutes the receive signal.
Analog receive gain.
3
RXM
ARX[2:0]
2:0
NOTE: Register 13 bit 1 (ARX) must be 0 for these bits to work as expected.
Unpredictable results can occur if ARX is 1 and these bits are non-zero.
0
7
0
6
0
5
IIRE
4
1
3
0
2
0
1
0
0
ATX[2:0]
000
001
010
011
1xx
Description
0dB attenuation.
3dB attenuation.
6dB attenuation.
9dB attenuation.
12dB attenuation.
ATX[2:0]
000
001
010
011
1xx
Description
0dB gain.
3dB gain.
6dB gain.
9dB gain.
12dB gain.
Bits
Name
Reserved
IIRE
Description
Reserved. Read returns zero. Must always be written with zeros.
IIR filter enable. When set, the transmit and receive filters are realized with an IIR
filter characteristic. To enable IIR filter write 18h; to disable IIR filter write 08h.
See Table 28 for more details on IIR filter performance.
Reserved. Read returns 8h. Must always be written with 8h.
7:5
4
3:0
Reserved
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