
ISDN and 16-bit Audio
8
8
8
The ISDN and 16-bit Audio interfaces on the
SPARCbook 3 are provided by a pair of coupled
components: the AT&T T7259 Dual Basic Rate
ISDN Controller (DBRI); and the Crystal
Semiconductor Corporation CS4215 Multimedia
Audio Coder-Decoder (CODEC). These provide a
terminal endpoint (TE) ISDN interface at the S/T
reference point, and also high quality stereo audio.
The architecture of the ISDN and audio interface is
illustrated in Figure 8-1.
Figure 8-1 ISDN and Audio Interface
Protection
Concentration
ISDN
Stereo Line-Out
Stereo Headphones
Stereo Line-In
Mono Microphone
Audio
ISDN
ISDN
DBRI Chip
Terminal
Endpoint
I/O Panel
Connector
Highway
Interface
CODEC
S3GX_TRMBook Page 1 Friday, September 19, 1997 11:39 am
Summary of Contents for SPARCbook 3 series
Page 8: ...viii S3GX_TRMBook Page viii Friday September 19 1997 11 39 am...
Page 44: ...2 16 The SPARC CPU SBus Controller S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Page 76: ...5 8 SCSI Controller DMA Support S3GX_TRMBook Page 8 Friday September 19 1997 11 39 am...
Page 146: ...9 28 MODEM Class 2 Fax Command Set S3GX_TRMBook Page 28 Friday September 19 1997 11 39 am...
Page 180: ...11 30 Display Interface RAMDAC S3GX_TRMBook Page 30 Friday September 19 1997 11 39 am...
Page 216: ...Index vi S3GX_TRMBook Page vi Friday September 19 1997 11 39 am...