CY28RS400
Document #: 38-07637 Rev. *B Page 16 of 19
Test and Measurement Set-up
For PCI Single-ended Signals and Reference
The following diagram shows the test load configurations for
the single-ended PCI, USB, and REF output signals.
For Differential CPU and SRC Output Signals
The following diagram shows the test load configuration for the
differential CPU and SRC outputs.
T
R
/ T
F
REF Rise and Fall Times Measured between 0.8V and 2.0V
0.5 4.0
V/n
s
T
CCJ
REF Cycle to Cycle Jitter Measurement at 1.5V 1000 ps
ENABLE/DISABLE and SET-UP
T
STABLE
Clock Stabilization from Power-up 1.8 ms
T
SS
Stopclock Set-up Time 10.0 ns
T
SH
Stopclock Hold Time 0 ns
AC Electrical Specifications (continued)
Parameter Description Condition Min. Max. Unit
Figure 12. Single-ended Load Configuration
PCI/
USB
REF
12Ω
Measurement
Point
5pF
12Ω
Measurement
Point
5pF
12Ω
Measurement
Point
5pF
12Ω
Measurement
Point
5pF
12Ω
Measurement
Point
5pF
60Ω
60Ω
60Ω
60Ω
60Ω
CPUT
CPUC
33Ω
33Ω
49.9Ω
49.9Ω
Measurement
Point
2pF
475Ω
IR EF
Measurement
Point
2pF
100
100
SRCT
SRCC
Fi
g
ure 13. 0.7V Load Confi
g
uration
[+] Feedback
CY28RS400
Document #: 38-07637 Rev. *B Page 17 of 19
2.4V
0.4V
3.3V
0V
T
R
T
F
1.5V
3.3V si
g
nals
T
DC
-
-
Figure 14. Single-ended Output Signals (for AC Parameters Measurement)
Ordering Information
Part Number Package Type Product Flow
Standard
CY28RS400OC 56-pin SSOP Commercial, 0° to 70°C
CY28RS400OCT 56-pin SSOP – Tape and Reel Commercial, 0
° to 70°C
CY28RS400ZC 56-pin TSSOP Commercial, 0
° to 70°C
CY28RS400ZCT 56-pin TSSOP – Tape and Reel Commercial, 0
° to 70°C
Lead-free
CY28RS400OXC 56-pin SSOP Commercial, 0° to 70°C
CY28RS400OXCT 56-pin SSOP – Tape and Reel Commercial, 0
° to 70°C
CY28RS400ZXC 56-pin TSSOP Commercial, 0
° to 70°C
CY28RS400ZXCT 56-pin TSSOP – Tape and Reel Commercial, 0
° to 70°C
Package Diagrams
0.095
0.025
0.008
SEATING PLANE
0.420
0.088
.020
0.292
0.299
0.395
0.092
BSC
0.110
0.016
0.720
0.008
0.0135
0.730
DIMENSIONS IN INCHES MIN.
MAX.
0.040
0.024
-8°
GAUGE PLANE
.010
1
28
56
29
0.110
0.005
0.010
51-85062-*C
56-Lead Shrunk Small Outline Package O56
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CY28RS400
Document #: 38-07637 Rev. *B Page 18 of 19
© Cypress Semiconductor Corporation, 2004. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be
used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its
products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Purchase of I
2
C components from Cypress or one of its sublicensed Associated Companies conveys a license under the Philips
I
2
C Patent Rights to use these components in an I
2
C system, provided that the system conforms to the I
2
C Standard Specification
as defined by Philips. ATI is a registered trademark of ATI Technologies Inc. HyperTransport is a trademark of the HyperTransport
Technology Consortium. Intel and Pentium are registered trademarks of Intel Corporation. AMD is a registered trademark of
Advanced Micro Devices, Inc. All product and company names mentioned in this document are trademarks of their respective
holder.
Package Diagrams (continued)
SEATING
PLANE
1
BSC
-8°
MAX.
GAUGE PLANE
28
29 56
1.100[0.043]
0.051[0.002]
0.851[0.033]
0.508[0.020]
0.249[0.009]
7.950[0.313]
0.25[0.010]
6.198[0.244]
13.894[0.547]
8.255[0.325]
5.994[0.236]
0.950[0.037]
0.500[0.020]
14.097[0.555]
0.152[0.006]
0.762[0.030]
DIMENSIONS IN MM[INCHES] MIN.
MAX.
0.170[0.006]
0.279[0.011]
0.20[0.008]
0.100[0.003]
0.200[0.008]
REFERENCE JEDEC MO-153
PACKAGE WEIGHT 0.42gms
PART #
Z5624 STANDARD PKG.
ZZ5624 LEAD FREE PKG.
56-Lead Thin Shrunk Small Outline Package, Type II (6 mm x 12 mm) Z56
51-85060-*C
[+] Feedback

CY28RS400OXCT

Mfr. #:
Manufacturer:
Cypress Semiconductor
Description:
IC CLK GEN CPU 266MHZ 2CIRC
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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