The MC145574A second-generation S/T-Interface Transceiver provides
an economical VLSI Layer 1 interface for the transportation of two 64
kbps B channels and one 16 kbps D channel between the network
termination (NT) and terminal equipment (TE). The MC145574A conforms
to CCITT I.430, ANSI T1.605, and ETSI ETS 300 012 specifications.
The device provides the modulation/line-drive and
demodulation/line-receive functions required of the interface. In
addition, it provides activation/deactivation, error monitoring,
framing, bit, and octet timing. The MC145574A provides the control
signals for the interface to the Layer 2 devices. Complete multiframe
capability is provided.
The Interchip Digital Link (IDL2) is supported for the exchange of
2B+D channel information between ISDN components and systems.
Transceiver operation is programmed through the industry standard
Serial Control Port (SCP). As an alternative to IDL+SCP combination,
a General Circuit Interface (GCI) is provided.