lan91c95 Standard Microsystems Corp., lan91c95 Datasheet - Page 41

• Manufacturer Part Number: lan91c95
• Description: Isa/pcmcia Full Duplex Single-chip Ethernet And Modem Controller With Ram
• Manufacturer: Standard Microsystems Corp.

PCMCIA Configuration Registers: Address
8000-803Eh
The PCMCIA Configuration Registers are stored
inside the LAN91C95 above the external Attribute
Memory address space. These registers are used
to configure and control the PCMCIA related
functionality of the Ethernet and Modem functions.
MEMORYADDRESS
MEMORYADDRESS
8000h - 803Eh
8000h - 803Eh
ATTRIBUTE
ATTRIBUTE
400h-7FFEh
0 - 7FFEh
0 - 3FEh
TABLE 10 - ATTRIBUTE MEMORY ADDRESS WITHOUT SERIAL EEPROM
TABLE 9 - ATTRIBUTE MEMORY ADDRESS USING SERIAL EEPROM
EXTERNAL EPROM
EXTERNAL EPROM
STORE
STORE
X
X
41
These registers are eight bits wide and reside on
even locations. The LAN91C95 ignores odd
accesses to this area (ignore writes, do not drive
the bus on reads). This address offset has been
changed from prior LAN9000 PCMCIA designs
to allow a larger address range for other
attribute memory data. This data could be a
larger card information structure or a XIP data
image.
STORE (512 BYTES)
STORE (512 BYTES)
INTERNAL SRAM
INTERNAL SRAM
X
CONFIGURATION
CONFIGURATION
REGISTERS
REGISTERS
X
X