Specifications

17 January 1997 – Subject to Change
Functional Description 4–17
System Clocks
Figure 4–7 AlphaPC 164 System Clocks
21164
pc164.2
82378ZB
Bridge
pc164.22
14mhz_out
osc
37C935
Combination
pc164.25
sysclk
Oscillator
PC164-07
14.3-MHz
Socketed
Oscillator
pc164.3
36.6-MHz
Socketed
PLL Clock
Generator
X10
pc164.3
Microprocessor
irq_h<3:0>
clk_in_h
clk_in_l
PLL
Clock
Driver
pc164.4
CIA
cia_clk_h
ISA
Slots
pc164.29
PCI
Slots
Controller
sys_clk_out1
DSW0
DSW1
DSW2
DSW3
dsw0_clk_h
pciclk_slot0
pciclk_sio
dsw1_clk_h
dsw2_clk_h
dsw3_clk_h
pciclk_slot1
pciclk_slot2
pciclk_slot3
J30 Jumpers
pciclk_arb
pciclk_ide
pc164.20,21
pc164.23
(Default)