AMD Elan SC520 - Chapter 2 Pin Information; Overview; Logic Symbols

Élan™SC520 Microcontroller User’s Manual 2-1
CHAPTER
2
PIN INFORMATION
2.1 OVERVIEW
The ÉlanSC520 microcontroller contains 258 signal pins plus power and ground signals.
A minimal number of signals are shared with others.
The signals are organized alphabetically within the following functional groups:
■ Synchronous DRAM controller (page 2-5)
■ ROM/Flash controller (page 2-6)
■ PCI bus (page 2-6)
■ General-purpose (GP) bus (page 2-7)
■ Serial ports (page 2-9)
■ Timers (page 2-10)
■ Clocks and reset (page 2-10)
■ Chip selects (page 2-11)
■ Programmable I/O (PIO) (page 2-11)
■ JTAG boundary scan test interface (page 2-12)
■ AMDebug interface (page 2-12)
■ System test (page 2-12)
■ Configuration (page 2-13)
■ Power (page 2-14)
2.2 LOGIC SYMBOLS
Figure 2-1 shows a logical symbol of the device, with pins grouped by function or interface.
Figure 2-2 shows a logical symbol with pins grouped by default function. Figure 2-2 also
shows pin multiplexing on the ÉlanSC520 microcontroller.