tsc693e ETC-unknow, tsc693e Datasheet - Page 73

• Manufacturer Part Number: tsc693e
• Description: Memory Controller
• Manufacturer: ETC-unknow

TSC693E
ROMBEN* - Boot PROM Buffer Enable (output)
ROMBEN* is asserted during memory accesses to boot PROM. It is intended to be used
as buffer enable for data and check bit buffers in the boot PROM areas.
MEMBEN* - Memory Buffer Enable (output)
MEMBEN* is asserted during memory accesses to both RAM and boot PROM. It is
intended to be used as buffer enable for data and check bit buffers in the RAM and boot
PROM areas if RAM and boot PROM share the same buffers.
DDIR - Data Direction (output)
DDIR is used for determining the direction of the data buffers connected between the
local ERC32 bus and the ERC32 system bus. The DDIR is asserted when the data flows
from the local bus to the system bus i.e. during write operations. It is valid during all
memory accesses.
DDIR* - Data Direction (output)
DDIR* is used for determining the direction of the data buffers connected between the
local ERC32 bus and the ERC32 system bus. The DDIR* is asserted when the data
flows from the local bus to the system bus i.e. during write operations. It is valid during
all memory accesses.
IOSEL*[3:0] - IO Chip Select (output)
These four select signals are used to enable one of four possible I/O address areas.
IOWR* - IO Write (output)
IOWR* is asserted during write operations to the I/O area, extended I/O area and the
exchange memory area.
MATRA MHS
Rev. D (10 Apr. 97)
73