The 2K Byte Memory - Gemplus GPR400 Reference Manual

The 2K byte Memory

The GPR400 has 2K bytes of RAM included in the specific component.
These 2K bytes are mapped as follows:
The first 2016 bytes are used to store the Card Information Structure
(C.I.S.), the specific PCMCIA defined registers for I/O PC Card
(Configuration Option Register), the registers for the Smartcard interface
and some external RAM data which are used by the embedded
microprocessor for external data space or executable programs (application
programs or Smartcard drivers). The C.I.S. is downloaded by the internal
microcontroller. The external RAM data can be loaded by the embedded
microcontroller or by the PCMCIA interface (Attribute Memory space
access).
The 32-byte I/O buffer is used to transmit application commands to the
microcontroller handling interface with the smart card.
© GEMPLUS
2016 Bytes
Attribute MEMORY
and
External RAM Space
Smartcard registers
32 Bytes
I/O BUFFER
Figure 3. GPR400 2k Bytes RAM Structure
THE GPR400 HARDWARE
I/O Start Address
4