cy2030 Cypress Semiconductor Corporation., cy2030 Datasheet - Page 2

• Manufacturer Part Number: cy2030
• Description: Audio, Clock Generator Intel 82440lx Chipset
• Manufacturer: Cypress Semiconductor Corporation.

Pin Summary
Function Table
Actual Frequency Values
Name
V
XTALIN
XTALOUT
V
OE
2XAUDIO
AUDIO
V
SEL0
SEL1
V
IOCLK
V
USBCLK1
USBCLK0
V
REF0
V
REF1
REF2
0
1
1
1
1
USBCLK
IOCLK
2XAUDIO
2XAUDIO
AUDIO
AUDIO
REF
Notes:
1.
2.
3.
OE
DD
SS
DD
SS
DD
SS
DD
XTALIN and XTALOUT do not have internal compensation capacitors. Therefore, if an external crystal is used with the device, external compensation capacitors
are required to match the load capacitance of the crystal.
If the reference is an external clock, it should be driven on the XTALIN input, and XTALOUT must be left floating.
Intel Test Mode
[1, 2]
X
0
0
1
1
SEL1
Clock
[1]
Pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
X
0
1
0
1
SEL0
Description
3.3V voltage supply
Reference crystal input, typically 14.318 MHz
Reference crystal feedback
Ground
Output Enable, active HIGH (internal pull-up resistor to V
2XAudio clock output, at 33.8688 MHz or 24.576 MHz (See function table below)
Audio clock output, at 16.9344 MHz or 12.288 MHz (See function table below)
3.3V voltage supply
Audio clock select input, bit 0 (internal pull-up resistor to V
Audio clock select input, bit 1 (internal pull-up resistor to V
Ground
I/O clock output (24.0 MHz)
3.3V Voltage supply
USB clock output (48.0 MHz)
USB clock output (48.0 MHz)
Ground
REF clock output for ISA slots, drives 45 pF loads (14.318 MHz)
3.3V voltage supply
Reference clock output (14.318 MHz)
Reference clock output (14.318 MHz)
14.318 MHz
14.318 MHz
14.318 MHz
14.318 MHz
14.318 MHz
48.0
24.0
33.8688
24.576
16.9344
12.288
14.318
XTALIN
Target Frequency (MHz)
High-Z
XTALIN/2
24.576 MHz
33.8688 MHz
Low
2XAudio
[3]
High-Z
XTALIN/4
12.288 MHz
16.9344 MHz
Low
2
Audio
48.008
24.004
33.8680
24.5795
16.9340
12.2898
14.318
[3]
High-Z
XTALIN
14.318 MHz
14.318 MHz
14.318 MHz
Actual Frequency (MHz)
REF [0:2]
DD
). Three-states all outputs when driven LOW.
DD
DD
[3]
)
)
High-Z
XTALIN/2
48 MHz
48 MHz
48 MHz
USBCLK [0:1]
[3]
High-Z
XTALIN/4
24 MHz
24 MHz
24 MHz
167
167
–24
144
–24
144
0
CY2030
IOCLK
PPM
[3]