GENERAL DESCRIPTION
The Winbonds single chip PCI bus ISDN S/T interface controller (W6692) is an all-in-one device suitable for ISDN Internet access. Three HDLC controllers are incorporated in the chip, one for D channel and the other two for B channels. These HDLC controllers facilitate efficient access to signaling and data services. The PCM codec interface provides voice service or other services. The built in PCI 2.2 interface circuit makes glueless design for PCI bus add-on card application.

FEATURES
* Full duplex 2B + D S/T-interface transceiver compliant with ITU-T I.430 Recommendation
* One D channel HDLC controller
    - Maskable address recognition
    - Transparent (HDLC) mode
    - FIFO buffer (2 x 128 bytes)
* Two B channel HDLC controllers
    - Maskable address recognition
    - Bit rate options : 56 or 64 kbps
    - Transparent (HDLC mode) or extended transparent mode (clear channel)
    - FIFO buffer (2 x 128 bytes) per B channel
* Two PCM codec interfaces for speech and POTS application
* Various B channel switching capabilities
* GCI master/slave interface
* Built in PCI 2.2 slave mode circuit
* ACPI capability : PCI 2.2 and PCI Power Management 1.1 compliant
* Serial EEPROM interface for PCI configuration
* Peripheral control pins
* 8-bit microprocessor interface when PCI is disabled for TA application
* Digital : 5V or 3.3V, analog : 5V
* Advanced CMOS technology
* Low power consumption
* 100-pin QFP package