MODEM
9
9
9
This chapter discusses the SPARCbook 3’s internal
modem. It uses a two-chip set comprising the
R65C39 microcontroller unit (MCU) and
RC144APL modem data pump (MDP). Connection
to a telephone line is made via a data access
arrangement (DAA) which provides the required
line isolation
Figure 9-1 shows the implementation of the modem
interface in the SPARCbook 3.
Figure 9-1 SPARCbook Internal Modem
Serial
EEPROM
EPROM
SRAM
65C39
MCU
RC144DPL
MDP
(Parallel)
Slow I/O D(7:0)
Slow I/O A(3:0)
DAA
Telephone
Connection
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...