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Development Module Interface
The development module interface, located at P19 and P12, is primarily used to
provide an interface to the ISDN/router development module. This module enables
the CDP to be used as a specific system application. The module connectors contain
all the signals needed to develop particular applications based on the Am186CC
communications controller. See Figure 2-28 on page 2-52 (or sheet 13 of the main
board schematics included in your kit) for the development module interface.
Interfaces provided include the following:
• 3.3 V, 5 V, –5 V, –24 V, and –70 V power
• Full address and data buses
• All 14 memory and peripheral chip selects
• Nine external interrupt pins
• Full control and status pins
• Four full HDLC interfaces (HDLC Channels A and B supported on the
Am186CC and Am186CH microcontrollers only. HDLC Channels C and D
supported on the Am186CC communications controller only.)
• SSI interface
about.book Page 51 Monday, June 7, 1999 10:17 AM
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