User`s manual

5.3 Physical Board Parameters
Table 5–2 Board Component List
Locator
Number
Component
Number Component Description
1 U42 Digital Semiconductor 21164 Alpha microprocessor
2 U41 21171-CA control, I/O interface, and address (CIA) chip
3 U32 21171-BA data switch (DSW0) chip
4 U15 21171-BA data switch (DSW2) chip
5 U10 21171-BA data switch (DSW1) chip
6 U2 21171-BA data switch (DSW3) chip
7 U50 TriQuint TQ2061 phase-locked loop (PLL) clock chip
8 U49 26.66-MHz clock oscillator
9 U31 Main memory row address strobe (RAS) PAL
10 U30 Main memory row address strobe (RAS) PAL
11 U58 National 87312 combination chip
12 U57 ISA clock frequency generator chip
13 X2 14.318-MHz clock oscillator
14 U33 Motorola 88PL117 phase-locked loop (PLL) system clock chip
15 U17 Intel 82378ZB PCI-to-ISA SIO bridge chip
16 U12 Xilinx serial ROM (initialization code) chip
17 U11 MACH210A interrupt request and PCI arbiter PAL
18 U13 Ubus decoder PAL
19 U14 Flash ROM chip
20 U7 Intel 8242 mouse and keyboard controller chip
21 U6 Dallas Semiconductor DS1287 time-of-year (TOY) clock chip
5–4 EB164 Requirements, Power, and Parameters