mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 962

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

SECTION 17
PCMCIA INTERFACE
The PCMCIA host adapter module provides all control logic for a PCMCIA interface. Only
the analog power switching logic and buffering needs to be provided externally. The
PCMCIA host supports one PCMCIA socket.
17.1 FEATURES
The following list summarizes the main features of the PCMCIA interface:
17.2 SYSTEM CONFIGURATION
The PCMCIA host adapter interface module can control one PCMCIA socket, which is
illustrated in Figure 17-1. In this system configuration, you must accomplish electrical
isolation between the sockets and system bus using external buffers and bus transceivers.
These buffers also provide the voltage conversion needed from the MPC823’s 3.3V to 5V
cards. They must be powered by the card V
accept 5V inputs while generating 3.3V outputs, no conversion is needed for inputs.
• A Host Adapter Interface Fully Compliant with the PCMCIA Standard, Release 2.1+
• Supports One PCMCIA Socket, Requiring only External Buffering and Analog
• Supports Eight Memory or I/O Windows.
• Provides Eight General-Purpose I/O Pins when the PCMCIA Controller is not
• Provides Two General-Purpose Output-Only Pins when the PCMCIA Controller is not
(PC Card -16).
Switching Logic. The Socket is Referred to as Slot B to Maintain Compatibility with the
MPC821 Microprocessor.
Operating.
Operating.
Freescale Semiconductor, Inc.
For More Information On This Product,
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
cc
. Since the MPC823 is 5V friendly and will
17-1