PLL702-06 Datasheet, PDF (1/8 Pages) PhaseLink Corporation – Clock Generator for Printer Applications

PLL702-06
Clock Generator for Printer Applications
FEATURES
• 1 CPU Clock output with selectable frequencies (50,
66.67, 75, 80, 83.3, 90, 100,125 or 133 MHz).
• 1 Selectable 48, 30 or 12MHz USB Clock output.
• Selectable Spread Spectrum (SST) for EMI reduction
on CPU clock.
• PowerPC compatible CPU Clock.
• Advanced, low power, sub-micron CMOS processes.
• 14.31818MHz fundamental crystal input.
• 3.3V and/or 2.5V operation.
• Available in 16-Pin 150mil SOP.
DESCRIPTION
The PLL702-06 is a low cost, low jitter, and high
performance clock synthesizer for generic Printer
applications. It provides one CPU clock and a selectable
48, 30 or 12MHz (USB) output. The user can choose
among 9 different clock frequencies and 3-selectable down-
spread Spread Spectrum modulation to reduce EMI on
CPU clock. All frequencies are generated from a single low
cost 14.31818MHz crystal. CPU clock can be driven from
an independent 2.5V or 3.3V power supply.
BLOCK DIAGRAM
PIN CONFIGURATION
XIN 1
XOUT 2
VDDA 3
VDDD 4
GNDUSB 5
VDDUSB 6
USB/USB_SEL^T*
7
VDDCPU 8
16
FS0^T
15
FS1^T
14 SS0^
13 SS1^
12 GNDA
11 GNDD
10 GNDCPU
9 CPU
Note : _{^: Internal pull-up resistor}
*: Bi-directional pin
T_{: Tri-level Input}
CPU CLOCK FREQUENCY TABLE
FS1
FS0
CPU (MHz)
0
0
50
0
M
66.67
0
1
75
M
0
80
M
M
83.33
M
1
90*
1
0
100
1
M
125
1
1
133*
*Notes: Actual CPU frequency for 90Mhz is 88.88Mhz, 133Mhz is 130.9Mhz
USB_SEL
XIN
XOUT
XTAL
OSC
SS(0:1)
FS(0:1)
Control
Logic
Control
Logic
PLL
PLL
SST
VDDUSB
USB
VDDCPU
CPU
47745 Fremont Blvd., Fremont, California 94538 Tel [phone] Fax [phone] www.phaselink.com Rev 10/26/05 Page 1