7-2
PCMCIA Interface
TS102 Architecture Overview
7.1
TS102 Architecture Overview
The general architecture of the TS102 ASIC is illustrated in Figure 8-5.
7.1.1
SBus interface
The TS102 provides an IEEE-P1496 compliant 32-bit slave interface, with
separate address spaces for PCMCIA memory accesses and for register
accesses. This feature allows user processes access to the PCMCIA
memory resources while restricting access to key systems resources, such
as the microcontroller communications link.
The TS102 slave interface supports all SBus transfer sizes up to 8-word
transfers, but not 16-word and extended transfer modes. The TS102
performs the required number of accesses to the PCMCIA interface to
fulfill any request. For example, if the controller requests a 32-bit (word)
access, and the card installed is 16 bit, then the TS102 performs two
accesses.
The TS102 supports posted writes to PCMCIA cards of up 8 words. Such
posted completed by the TS102 after the transfer has been acknowledged
on the SBus. Until the write is complete, further accesses to the TS102
rerun by the TS102.
Figure 7-2 TS102 Architecture
Bus Sizing
and FIFO
Registers
µ
Controller
Card B
Card A
Interface
Interface
Interface
SBus
Interface
Keybord
Port
Mouse
Port
S3GX_TRMBook Page 2 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...