CY28401OCT Silicon Laboratories Inc, CY28401OCT Datasheet

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CY28401OCT

Manufacturer Part Number
CY28401OCT
Description
Clock Buffer 100 MHz Diff Buffer PCIe & SATA 1in 4out
Manufacturer
Silicon Laboratories Inc
Datasheet

Specifications of CY28401OCT

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Rev 1.0, November 21, 2006
2200 Laurelwood Road, Santa Clara, CA 95054
Features
• CK409 or CK410 companion buffer
• Eight differential 0.7V clock pairs
• Individual OE controls
• Low CTC jitter (< 50 ps)
• Programmable bandwidth
• SRC_STOP# power management control
• SMBus Block/Byte/Word Read and Write support
• 3.3V operation
• PLL Bypass-configurable
• Divide by 2 programmable
• 48-pin SSOP package
Block Diagram
PLL/BYPASS#
SRC_STOP#
SRC_DIV2#
PWRDWN#
HIGH_BW#
SRCC_IN
SRCT_IN
OE_[0:7]
SDATA
SCLK
100 MHz Differential Buffer for PCI Express and SATA
PLL
Controller
Control
SMBus
Output
DIV
Output
Buffer
Tel:(408) 855-0555
DIFT0
DIFC0
DIFT1
DIFC1
DIFT2
DIFC2
DIFT3
DIFC3
DIFT4
DIFC4
DIFT5
DIFC5
DIFT6
DIFC6
DIFT7
DIFC7
LOCK
Functional Description
The CY28401 is a differential buffer and serves as a
companion device to the CK409 or CK410 clock generator.
The device is capable of distributing the Serial Reference
Clock (SRC) in PCI Express and SATA implementations.
PLL/BYPASS#
Fax:(408) 855-0550
Pin Configuration
SRC_DIV2#
SRCC_IN
SRCT_IN
SDATA
DIFCO
DIFC1
DIFC2
DIFC3
DIFT0
DIFT1
DIFT2
DIFT3
SCLK
OE_0
OE_3
OE_1
OE_2
VDD
VDD
VDD
VSS
VSS
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48 SSOP
www.SpectraLinear.com
CY28401
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
Page 1 of 13
VDD_A
VSS_A
IREF
LOCK
OE_7
OE_4
DIFT7
DIFC7
VSS
VDD
DIFT6
DIFC6
OE_6
OE_5
DIFT5
DIFC5
VSS
VDD
DIFT4
DIFC4
HIGH_BW#
SRC_STOP#
PWRDWN#
VSS

Related parts for CY28401OCT

CY28401OCT Summary of contents

Page 1

MHz Differential Buffer for PCI Express and SATA Features • CK409 or CK410 companion buffer • Eight differential 0.7V clock pairs • Individual OE controls • Low CTC jitter (< 50 ps) • Programmable bandwidth • SRC_STOP# power management ...

Page 2

Pin Description Pin 4,5 SRCT_IN, SRCC_IN 8,9,12,13,16,17,20,21,29,30, DIFT/C(7:0) 33,34,37,38,41,42 6,7,14,15,35,36,43,44 OE_(7:0) 28 HIGH_BW# 45 LOCK 26 PWRDWN# 1 SRC_DIV/2# 27 SRC_STOP# 23 SCLK 24 SDATA 46 IREF 22 PLL/BYPASS# 48 VDD_A 47 VSS_A 3,10,18,25,32,40 VSS 2,11,19,31,39 VDD Serial Data Interface ...

Page 3

Table 2. Block Read and Block Write Protocol (continued) Block Write Protocol Bit Description 10 Acknowledge from slave 11:18 Command Code – 8 bits '00000000' stands for block operation 19 Acknowledge from slave 20:27 Byte Count from master – 8 ...

Page 4

Byte 0: Control Register 0 (continued) Bit @pup Name Byte 1: Control Register 1 Bit @pup Name ...

Page 5

Byte 2: Control Register 2 (continued) Bit @pup Name Byte 3: Control Register 3 Bit @pup Name ...

Page 6

PWRDWN# Clarification The PWRDWN# pin is used to shut off all clocks cleanly and instruct the device to evoke power savings mode. Additionally, PWRDWN# should be asserted prior to shutting off the input clock or power to ensure all ...

Page 7

S1 Delay >0.25ms S0 Power Off SRC_STOP# Clarification The SRC_STOP# signal is an active LOW input used for clean stopping and starting the DIFT/C outputs (valid clock must be present on SRCT/C_IN). The SRC_STOP# signal is a debounced signal in ...

Page 8

SRC_STOP# PWRDWN# DIFT(Free Running DIFC(Free Running DIFT (Stoppable) DIFC (Stoppable) Figure 5. SRC_STOP# =Driven, PWRDWN# = Three-state SRC_STOP# PWRDWN# DIFT(Free Running DIFC(Free Running DIFT (Stoppable) DIFC (Stoppable) Figure 6. SRC_STOP# =Three-state, PWRDWN# = Driven SRC_STOP# PWRDWN# DIFT(Free Running DIFC(Free Running ...

Page 9

OE Assertion (Transition from ‘0’ to ‘1’) All differential outputs that were three-stated will resume normal operation in a glitch-free manner. The maximum latency from the assertion to active outputs is between 2–6 DIF clock periods. In addition, DIFT clocks ...

Page 10

Absolute Maximum Conditions Parameter Description V Core Supply Voltage DD V Analog Supply Voltage DD_A V Input Voltage IN T Temperature, Storage S T Temperature, Operating Ambient A T Temperature, Junction J Ø Dissipation, Junction to Case JC Ø Dissipation, ...

Page 11

AC Electrical Specifications (continued) Parameter Description V Voltage Low LOW V Crossing Point Voltage at 0.7V Swing OX ΔV Vcross Variation over all edges OX V Maximum Overshoot Voltage OVS V Minimum Undershoot Voltage UDS V Ring Back Voltage RB ...

Page 12

... V OVS V RB Figure 10. Single-ended Measurement Points for V Skew Management Point 0.000V Figure 11. Differential (Clock-CLock#) Measurement Points (Tperiod, Duty Cycle and Jitter) Ordering Information Ordering Code CY28401OC CY28401OCT Lead-Free CY28401OXC CY28401OXCT Rev 1.0, November 21, 2006 LOW V UDS ,V OVS UDS T PERIOD High Duty Cycle % ...

Page 13

Package Drawing and Dimensions While SLI has reviewed all information herein for accuracy and reliability, Spectra Linear Inc. assumes no responsibility for the use of any cir- cuitry or for the infringement of any patents or other rights of third ...

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