參數(shù)資料
型號(hào)： W6694CD
廠商： WINBOND ELECTRONICS CORP
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： USB Bus ISDN S/T-Controller
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP48
封裝： 7 X 7 MM, 1.40 MM, PLASTIC, LQFP-48
文件頁(yè)數(shù)： 7/42頁(yè)
文件大?。?/td> 567K
代理商： W6694CD
Preliminary Data Sheet
W6694A USB-ISDN S/T-Controller
-7-
Publication Release Date: May, 2001
Revision 1.03
1. GENERAL DESCRIPTION
The Winbond
'
s single chip USB bus ISDN S/T interface controller W6694A is an all-in-one device suitable for ISDN
Internet access. With internal microprocessor, the integrated USB and ISDN design provides low cost solution for USB-
IDSN application. W6694A also provides two PCM CODEC interfaces for the ability to access ISDN through voice channel.
2. FEATURES
ISDN
Full duplex 2B+D S/T-interface transceiver compatible with ITU-T I.430 Recommendation
Four wire operation
Received clock recovery
Layer 1 activation/deactivation procedure
D channel access control
Transparent data transmission of 2B+D channels
Test functions
USB
USB Specification version 1.0/1.1 compliant
Full-speed, bus-powered USB device
Integrated transceiver, PLL, SIE, SIL, and voltage regulator
Built-in fully automatic enumeration procedure
Support suspend mode
Suspend current requirement
Wake-up by ISDN (remote) and PC (host)
Microcontroller
Built-in programmable microcontroller for internal data transfer between USB, and ISDN/GCI/PCM interface
Others
GCI bus interface (slave mode) for connecting to ISDN U transceiver chip
PCM port provides two 64K clear channels to connect to PCM CODEC chips
B channel data switching function for selective connection between ISDN/GCI interface, USB, and PCM port
EEPROM interface for retrieving/saving customized data dynamically
IO pins with LED current drive capability
Reset pin for whole-chip reset
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