1-8
Architecture Overview
DRAM
1.6
DRAM
The SPARCbook 3 provides two SIMM sites which support a range of
different capacity modules. The SIMM sites accommodate 72-pin units,
which must be fitted in matched pairs to provide a full width 64-bit data
interface for the microSPARC II.
The SIMMs are each 33-bits wide (32 bits data and 1 bit parity), and are
available in sizes of 8Mbytes x 33, 16Mbytes x 33, 32Mbytes x 33, and
64Mbytesx33. This gives a usable memory capacity of up to of 128. The
fast processor clock speed used in SPARCbook 3 series computers requires
the use of 60ns SIMMS.
Figure 1-5 EBus Architecture
MK48T08
TRC/RAM
Boot
EPROM
Modem
TS102
NCR89C105
SLAVIO
Address
Data
Chip Selects
8
19
MBus
Address
S3GX_TRMBook Page 8 Friday, September 19, 1997 11:39 am
Содержание SPARCbook 3 series
Страница 1: ...Series Technical Reference Manual 980327 02 3 S3GX_TRMBook Page i Friday September 19 1997 11 39 am...
Страница 8: ...viii S3GX_TRMBook Page viii Friday September 19 1997 11 39 am...
Страница 28: ...1 16 Architecture Overview Microcontroller Subsystem S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Страница 44: ...2 16 The SPARC CPU SBus Controller S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Страница 76: ...5 8 SCSI Controller DMA Support S3GX_TRMBook Page 8 Friday September 19 1997 11 39 am...
Страница 82: ...6 6 Ethernet Interface DMA Support for Network Operations S3GX_TRMBook Page 6 Friday September 19 1997 11 39 am...
Страница 96: ...7 14 PCMCIA Interface Microcontroller Registers S3GX_TRMBook Page 14 Friday September 19 1997 11 39 am...
Страница 146: ...9 28 MODEM Class 2 Fax Command Set S3GX_TRMBook Page 28 Friday September 19 1997 11 39 am...
Страница 180: ...11 30 Display Interface RAMDAC S3GX_TRMBook Page 30 Friday September 19 1997 11 39 am...
Страница 210: ...B 10 Connector Information Removable Hard Drive SCSI Connector S3GX_TRMBook Page 10 Friday September 19 1997 11 39 am...
Страница 216: ...Index vi S3GX_TRMBook Page vi Friday September 19 1997 11 39 am...