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CY28317-2
Document #: 38-07094 Rev. *B
Page 3 of 21
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. Con-
nect 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 Definitions (continued)
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
VOH @ Z
060
Ω
Rr = 221 1%
IREF = 5.00 mA
IOH = 4*IREF
1.0V @ 50
150
Ω
Rr = 475 1%
IREF = 2.32 mA
IOH = 6*IREF
0.7V @ 50
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