CY28317-2

....................... Document #: 38-07094 Rev. *B Page 3 of 20

VDD_REF,

VDD_PCI,

VDD_SDRAM,

VDD_48MHz

VDD_CPU_3.3

5, 9, 28, 29,

35, 45

P

Power Connection: Power supply for core logic, PLL circuitry, SDRAM outputs,

PCI outputs, reference outputs, 48-MHz output, and 24_48-MHz output.

Connect to 3.3V supply.

VDD_CPU_2.5

46

P

Power Connection: Power supply for CPU outputs. Connect to 2.5V supply.

GND_REF,

GND_PCI,

GND_SDRAM,

GND_48MHz,

GND_CPU

1, 6, 12, 23,

32, 38, 42

G

Ground Connections: Connect all ground pins to the common system ground

plane.

Pin Name

Pin No.

Pin Type

Pin Description

Table 1. Swing Select Functions

Mult0

Board Target

Trace/Term Z

Reference R, IREF=

VDD/(3*Rr)

Output Current

060



Rr = 221 1%

IREF = 5.00 mA

1.0V @ 50

150



Rr = 475 1%

IREF = 2.32 mA

0.7V @ 50