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參數(shù)資料
| 型號： | 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)： | 2/70頁 |
| 文件大?。?/td> | 872K |
| 代理商： | PCT789T-A |
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PC-TEL, Inc.
2
1789W0DOCDAT06A-0299
PCT1789W DATA SHEET
!
PRELIMINARY
PRELIMINARY
PCT303DW F
EATURES
Complete DAA includes:
Programmable line interface
– AC termination
– DC termination
– Ringer impedance
– Ringer threshold
86 dB dynamic range TX/RX paths
Integrated ring detector
Up to 4000 V isolation
Support for Caller ID
Low-profile SOIC packages
Low power consumption (15mW operating @3.3V)
3.3 or 5 V analog/digital power supply
Direct interface to DSPs
Integrated analog front end (AFE)
2–4-wire hybrid
Daisy-chaining for up to eight devices
PCT303DW A
PPLICATIONS
Modems
Phone line interface systems
PCT303DW F
UNCTIONAL
D
ESCRIPTION
The PCT303DW is an integrated direct access
arrangement (DAA) that provides a programmable line
interface
to
meet
international
requirements. Available in two 16-pin small outline
packages, it eliminates the need for an analog front end
(AFE), an isolation transformer, relays, opto-isolators,
and 2- to 4-wire hybrid. The PCT303DW dramatically
reduces the number of discrete components and cost
required to achieve compliance with international
regulatory requirements. The PCT303DW interfaces
directly to standard modem DSPs.
telephone
line
PCT303DW F
UNCTIONAL
B
LOCK
D
IAGRAM
PCT303DW Chip Set
Digital
Interface
Control
Interface
Isolation
Interface
Hybrid
and
DC
Termination
Ring Detect
Off-hook
MCLK
SCLK
FSYNC
SDI
SDO
FC/RGDT
RGDT/FSD
OFHK
MODE
RESET
RX
VREG
VREG2
REXT
REXT2
RNG1
RNG2
QB
QE
QE2
PCT303W
PCT303D
Isolation
Interface
FILT
FILT2
REF
DCT
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