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參數(shù)資料
| 型號(hào)： | PCT789T-A |
| 英文描述： | PCI HSP56 World MicroModem/PCT303DW/PCT1789W |
| 中文描述： | 世界MicroModem/PCT303DW/PCT1789W的PCI HSP56 |
| 文件頁(yè)數(shù)： | 48/70頁(yè) |
| 文件大?。?/td> | 872K |
| 代理商： | PCT789T-A |
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PC-TEL, Inc.
48
1789W0DOCDAT06A-0299
PCT1789W DATA SHEET
PCT303DW C
ONTROL
R
EGISTERS
!
PRELIMINARY
PRELIMINARY
International Control 1
(Register 16, R/W)
Reset settings: 08h
Bit Definitions:
ONS[1:0]
ACT
5
IIRE
4
DCT[1:0]
RZ
1
RT
0
7
6
3
2
Bits
Name
ONS[1:0]
Description
On-hook speed.
7:6
5
ACT
AC termination select.
1 = Selects the complex impedance.
0 = Selects the real impedance.
IIR filter enable.
1 = IIR filter enabled for transmit and receive filters. (See Figures 25–28 on page 61.)
0 = FIR filter enabled for transmit and receive filters. (See Figures 21–24 on page 60.)
DC termination select.
4
IIRE
3:2
DCT[1:0]
1
RZ
Ringer impedance select.
When set, ringer impedance is decreased to satisfy some countries’ ringer require-
ments.
Ringer threshold select.
Used to satisfy country requirements on ring detection. Signals below the lower level
will not generate a ring detection; signals above the upper level are guaranteed to
generate a ring detection.
1 = 15 ±5 Vrms
0 = 21.5 ±4.5 Vrms
0
RT
ONS[1:0]
00
11
Description
The PCT303DW will execute a slow controlled on-hook.
The PCT303DW will execute a fast on-hook.
DCT[1:0]
Mode
Description
00
0
Low voltage mode. See “Appendix: NET4 Country Support” on page 65.
(Transmit level = –2dBm).
Low voltage mode. Provides different I/V characteristics than mode 0.
(Transmit level = –5dBm).
Standard voltage mode. (Transmit level = –1dBm).
Current limiting mode. (Transmit level = –1dBm).
01
1
10
11
2
3
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相關(guān)代理商/技術(shù)參數(shù) |
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