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
文件頁數(shù)： 49/70頁
文件大?。?/td> 872K
代理商： PCT789T-A
PC-TEL, Inc.
49
1789W0DOCDAT06A-0299
PCT1789W DATA SHEET
PCT303DW C
ONTROL
R
EGISTERS
!
PRELIMINARY
PRELIMINARY
International Control 2
(Register 17, R/W)
Reset settings: 00h
Bit Definitions:
International Control 3
(Register 18, R/W)
Reset settings: 00h
Bit Definitions:
Reserved
5
BTE
2
ROV
1
BTD
0
7
6
4
3
Bits
Name
Reserved
BTE
Description
Reserved. Read returns zero.
Billing tone detector enable.
When set, the PCT303DW can detect a billing tone signal on the line and maintain
off-hook through the billing tone. If a billing tone is detected, bit 0 (BTD) is set to indi-
cate the event.
Receive overload. Read-only.
This bit is set when the receive input detects an excessive input level. This bit is
cleared by writing a zero to this location.
Billing tone detected. Read-only.
This bit is set if bit 2 (BTE) is enabled and a billing tone is detected. This bit is cleared
by writing a zero to this location.
7:3
2
1
ROV
0
BTD
Reserved
RFWE
1
SQLCH
0
7
6
5
4
3
2
Bits
Name
Reserved
RFWE
Description
Reserved. Read returns zero.
Ring detector full-wave rectifier enable. Read-only.
When set, the ring-detection circuitry provides full-wave rectification. This effects the
data stream presented on SDO during ring detection.
Ring detect network squelch.
This bit must be set, then cleared, following a polarity reversal detection.
7:2
1
0
SQLCH
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