User`s manual

Am486
®
Microprocessor PCI Customer Development Platform
2-1
Chapter 2
Board Functional Description
The Am486
®
microprocessor PCI customer development platform (CDP) provides
a test and development platform for Am486 microprocessor-based designs. Read
the following sections to learn more about the board:
• Feature and Layout Diagrams, page 2-2
• Jumper Functions, page 2-6
• Board Restrictions, page 2-7
• Board Features, page 2-7
– Am486 Microprocessor (M14), page 2-8
– Core Logic Chipset (M8, I13, D15), page 2-11
– Onboard Ethernet Controller (F7), page 2-13
– 4-Kbyte Serial EEPROM (C4), page 2-14
– Development Support, page 2-15
- JTAG Ports (Q14 and D17), page 2-15
- Logic Analyzer Headers, page 2-15
- In-Circuit Emulator Compatibility (M14, Q15–Q16), page 2-17
- Hexadecimal Display (H23, J23), page 2-17
- Test Interface Port (TIP) (A16), page 2-18
– PCI Bus (I7), page 2-19
– Level-2 Cache Memory (K19–N19 and N11), page 2-20
– DRAM Main Memory (P7), page 2-20
– Boot ROM (C16), page 2-21
– ISA Flash Memory (F20), page 2-23
– EIP Flash Memory (L21), page 2-25
– Real-Time Clock (G17), page 2-27
– ISA Bus Interface (A7), page 2-28
– Super I/O (C19), page 2-28
- Serial Ports (E23 and C23), page 2-29
- IrDA Interface (A19), page 2-29
- Parallel Port (A22), page 2-30
- Floppy Disk Drive (E20), page 2-30