Motorola Interchip Digital Link (IDL)
General Circuit Interface (GCI, also known as IOM-2
1
)
Pulse Code Modulation (PCM) Highway Interface
Nonmultiplexed Serial Interface (NMSI) Implementing Standard
Modem Signals
— SCP for Synchronous Communication
— Two Serial Management Controllers (SMCs) To Support IDL and GCI Auxiliary Channels
• PCMCIA Controller
— Supports Slave Interface Having 8 or 16-bit Data Pins
— Compatible with the PC Card Classic Specification Approved in October 1994
— Support for Ring Detect and Other Indications
— Support for Power Down Modes and Automatic Wakeup on Host Access
— Card Information Structure (CIS) Size and Location In Memory Programmable
— Supports DMA Accesses as Defined by PCMCIA
— Supports DMA Direct Access to Common Memory Space for High Speed Buffer Transfers
— Security Option to Prevent Host Accesses to Sensitive Address Ranges
— Separate PCMCIA Reset Signal
• 16550 Emulation Block
— Complete H/W and S/W Emulation of the 16550 UART
— DMA Supported for Transfer of 16550 Data Over 68K Bus
— Speed of Data Transfer Can Be Matched to Traditional 16550 UART
— High Speed Data Transfer up to 2 Mbps Possible
• Initial Offering Features 16.67 and 20 MHz Versions at 5V and 3.3V
• 144 Pin Thin Quad Flat Pack (TQFP) Packaging
MC68PM302 APPLICATIONS
The MC68PM302 excels in several applications areas.
First, the MC68PM302 excels in low power and portable applications. The inclusion of a static 68000 core,
coupled with the low power modes built into the device, make it ideal for handheld or other low power
applications. The new 32 kHz or 4 MHz PLL option greatly reduces the total power budget of the designer's
board, and allows the MC68PM302 to be an effective device in low power systems. The MC68PM302 can then
optionally generate a full frequency clock for use by the rest of the board. During low power modes, the new
periodic interrupt timer (PIT) allows the device to awaken at regular intervals. In addition, two pins can awaken
the device from low power modes. These features make the device useful as an upgrade to the existing
MC68302.
Second, the performance, cost, and low powerconsumption of the MC68PM302 makes it an ideal processor
for PCMCIA cards. It will perform the controller functions of a V.34 fax/data modem in conjunction with a
separate data pump. With its PCMCIA and ISDN functionality on-chip, it can be gluelessly connected to an
S/T or U interface device to perform the functions of a ISDN terminal adaptor. It can be used as a MAC
1
- IOM is a trademark of Siemens AG
MOTOROLA MC68PM302 PRODUCT INFORMATION
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(646 pages)
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