Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

CY28419 Datasheet(PDF) 2 Page - Cypress Semiconductor

Part No. CY28419
Description  Clock Synthesizer with Differential SRC and CPU Outputs
Download  16 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
Logo 

CY28419 Datasheet(HTML) 2 Page - Cypress Semiconductor

 
Zoom Inzoom in Zoom Outzoom out
 2 / 16 page
background image
CY28419
Document #: 38-07444 Rev. *D
Page 2 of 16
Pin Description
Pin No.
Pin Name
Pin Type
Pin Description
1,2
REF(0:1)
O, SE
Reference Clock. 3.3V 14.318-Mz clock output.
4XIN
I
Crystal Connection or External Reference Frequency Input. This pin has dual
functions. It can be used as an external 14.318-MHz crystal connection or as an
external reference frequency input.
5XOUT
O, SE
Crystal Connection. Connection for an external 14.318-MHz crystal output.
41,44,47,50 CPUT(0:3)
O, DIF
CPU Clock Output. Differential CPU clock outputs. See Table 1 for frequency config-
uration.
40,43,46,49 CPUC(0:3)
O, DIF
CPU Clock Output. Differential CPU clock outputs. See Table 1 for frequency config-
uration.
38, 37
SRCT, SRCC
O, DIF
Differential serial reference clock.
22,23,26,27 3V66(3:0)
O, SE
66-MHz Clock Output. 3.3V 66-MHz clock from internal VCO.
29
3V66_4VCH
O, SE
48-/66-MHz Clock Output. 3.3V selectable through SMBus to be 66 or 48 MHz.
7,8,9
PCIF(0:2)
O, SE
Free Running PCI Output. 33-MHz clocks divided down from 3V66.
12,13,14,15,
18,19,20
PCI(0:6)
O, SE
PCI Clock Output. 33-MHz clocks divided down from 3V66.
31,
USB_48
O, SE
Fixed 48-MHz clock output.
32
DOT_48
O, SE
Fixed 48-MHz clock output.
51,56
FS_A, FS_B
I
3.3V LVTTL input for CPU frequency selection.
52
IREF
I
Current Reference. A precision resistor is attached to this pin which is connected to
the internal current reference.
21
PD#
I, PU
3.3V LVTTL input for power-down# active LOW.
35
VTT_PWRGD#
I
3.3V LVTTL input is a level-sensitive strobe used to latch the FS0 input (active
LOW).
30
SDATA
I/O
SMBus-compatible SDATA.
28
SCLK
I
SMBus-compatible SCLOCK.
53
VSS_IREF
GND
Ground for current reference.
55
VDD_A
PWR
3.3V power supply for PLL.
54
VSS_A
GND
Ground for PLL.
42,48
VDD_CPU
PWR
3.3V power supply for outputs.
45
VSS_CPU
GND
Ground for outputs.
36
VDD_SRC
PWR
3.3V power supply for outputs.
39
VSS_SRC
GND
Ground for outputs.
34
VDD_48
PWR
3.3V power supply for outputs.
33
VSS_48
GND
Ground for outputs.
10,16
VDD_PCI
PWR
3.3V power supply for outputs.
11,17
VSS_PCI
GND
Ground for outputs.
24
VDD_3V66
PWR
3.3V power supply for outputs.
25
VSS_3V66
GND
Ground for outputs.
3
VDD_REF
PWR
3.3V power supply for outputs.
6
VSS_REF
GND
Ground for outputs.


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn