PI6C185-00QIE Pericom Semiconductor, PI6C185-00QIE Datasheet

no-image

PI6C185-00QIE

Manufacturer Part Number
PI6C185-00QIE
Description
Clock Buffer Precision 1:7 Clock Driver
Manufacturer
Pericom Semiconductor
Datasheet

Specifications of PI6C185-00QIE

Number Of Outputs
7
Max Input Freq
125 MHz
Propagation Delay (max)
5 ns
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Package / Case
QSOP-20
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
Features
• High-speed, low-noise non-inverting 1-7 buffer
• Switching speed up to 128 MHz
• Supports up to three mobile SDRAM DIMMs
• Low skew (<250ps) between any two output clocks
• I
• Multiple V
• 3.3V power supply voltage
• Packaging (Pb-free & Green available):
Block Diagram
- 20-pin QSOP (Q)
2
BUF_IN
C Serial Configuration interface
08-0298
SCLOCK
DD
SDATA
, V
SS
pins for noise reduction
I 2 C
I/O
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM6
1
Description
The PI6C185-00 is a high-speed low-noise 1-7 non-inverting
buffer designed for SDRAM clock buffer applications.
This buffer is intended to be used with the PI6C10X clock genera-
tor for Intel Architecture-based Mobile systems.
At power up all SDRAM output are enabled and active. The I
Serial control may be used to individually activate/deactivate any
of the 7 output drivers.
Note:
Purchase of I
them in an I
Pin Configuration
SDRAM1
SDRAM2
SDRAM0
BUF_IN
SDATA
2
V
V
V
V
V
2
C system as defined by Philips.
DD
DD
DD
SS
C components from Pericom conveys a license to use
SS
1
2
3
4
5
6
7
8
9
10
Precision 1-7 Clock Buffer
20
19
18
17
16
15
14
13
12
11
PI6C185-00
V
SDRAM6
SDRAM5
V
V
SDRAM4
SDRAM3
V
V
SCLK
SS
DD
SS
SS
DD
PS8317F
11/13/08
2
C

Related parts for PI6C185-00QIE

PI6C185-00QIE Summary of contents

Page 1

... I/O SCLOCK 08-0298 Description The PI6C185- high-speed low-noise 1-7 non-inverting buffer designed for SDRAM clock buffer applications. This buffer is intended to be used with the PI6C10X clock genera- tor for Intel Architecture-based Mobile systems. At power up all SDRAM output are enabled and active. The I Serial control may be used to individually activate/deactivate any of the 7 output drivers ...

Page 2

... Pin Description PI6C185- Address Assignment PI6C185 Serial Configuration Map Byte0: SDRAM Active/Inactive Register (1 = enable disable Note: Inactive means outputs are held LOW and are disabled from switching 08-0298 Byte1: SDRAM Active/Inactive Register (1 = enable disable Precision 1-7 Clock Buffer PI6C185- PS8317F 11/13/08 ...

Page 3

... The I C interface permits individual enable/disable of each clock output and test mode enable. The PI6C185- slave receiver device. It can not be read back. Sub addressing is not supported. To change one of the control bytes, all preceding bytes must be sent. Every bite put on the SDATA line must be 8-bits long (MSB first), followed by an acknowledge bit generated by the receiving device ...

Page 4

... DC Operating Specifications ( ± SDRAM Clock Buffer Operating Specification Timing 08-0298 = +3.3V ±5 0°C - 70° < V < – ± ± Precision 1-7 Clock Buffer – PI6C185- ° PS8317F 11/13/08 ...

Page 5

... Position clock signals away from signals that go to any cables or any external connectors. 08-0298 Test Output Point Buffer Test Load tSDKP tSDKH 2.4 1.5 0.4 tSDKL t t SDRISE SDFALL 1.5V 1.5V t plh 1.5V Figure 1. Clock Waveforms PI6C185-00 Precision 1-7 Clock Buffer t phl 1.5V PS8317F 11/13/08 ...

Page 6

... As a general rule, C1-C5 should be placed as close as possible to their respective From 7 PI6C185 Chipset Figure 2. Design Guidelines 08-0298 Recommended capacitor values: C1-C5 .............. 0.1μF, ceramic C6 .................. 22μF SDRAM DIMM Spec PI6C185-00 Precision 1-7 Clock Buffer 22mF V Via to SS Plane V Via to DD Plane Void in Power Plane PS8317F 11/13/08 ...

Page 7

... Dimensions do not include mold flash, protrusions or gate burrs Ordering Information Ordering Code Max. Frequency PI6C185-00QE 125 MHz PI6C185-00QIE 125 MHz Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging Tape and reel Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 08-0298 3 ...

Related keywords