W83195BR-202
W83195BG-202
Winbond Clock Generator for
AMD K8 System Series Chipsets
Date:
4/10/2006
Revision:
0.6
W83195BR-202/W83195BG-202
CLOCK GEN. FOR AMD K8 SYSTEM SERIES CHIPSET
W83195BR-202/W83195BG-202 Data Sheet Revision History
PAGES
DATES
VERSION
WEB
VERSION
MAIN CONTENTS
1
2
3
4
5
6
7
8
9
10
n.a.
n.a.
01/11/2005
04/10/2006
0.5
0.6
n.a.
n.a.
All of the versions before 0.50 are for internal
use.
Modify registers with blue text
Add Pb-free part no:W83195BG-202
Please note that all data and specifications are subject to change without notice. All the trademarks of
products and companies mentioned in this data sheet belong to their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where
malfunction of these products can reasonably be expected to result in personal injury. Winbond
customers using or selling these products for use in such applications do so at their own risk and
agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
-I-
Publication Release Date: Apr. 2006
Revision 0.6
W83195BR-202/W83195BG-202
CLOCK GEN. FOR AMD K8 SYSTEM SERIES CHIPSET
Table of Content-
1.
2.
3.
4.
5.
GENERAL DESCRIPTION ......................................................................................................... 1
PRODUCT FEATURES.............................................................................................................. 1
PIN CONFIGURATION............................................................................................................... 2
BLOCK DIAGRAM...................................................................................................................... 2
PIN DESCRIPTION .................................................................................................................... 3
5.1
5.2
5.3
5.4
5.5
5.6
6.
7.
Crystal I/O.................................................................................................................................3
CPU, PCIEX, AGP, and PCI Clock Outputs ...........................................................................3
Fixed Frequency Outputs.........................................................................................................4
I
2
C Control Interface .................................................................................................................5
Power Management Pins.........................................................................................................5
Power Pins................................................................................................................................5
FREQUENCY SELECTION BY HARDWARE OR SOFTWARE................................................ 6
I
2
C CONTROL AND STATUS REGISTERS............................................................................... 7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.20
7.21
Register 0: Frequency Select Register (Default = 10h) ..........................................................7
Register 1: CPU Clock Control (1 = Enable, 0 = Stopped) (Default: E2h) .............................7
Register 2: PCI Clock Control (1 = Enable, 0 = Stopped) (Default: FFh)...............................8
Register 3: AGP/PCI Clock Control (1 = Enable, 0 = Stopped) (Default: F3h) ......................8
Register 4: 24_48MHz, 48MHz, REF Control (1 = Enable, 0 = Stopped) (Default: FFh)......8
Register 5: Watchdog Control (Default: 82h) ..........................................................................9
Register 6: PCIEX Control (1 = Enable, 0 = Stopped) (Default: FEh)....................................9
Register 7: Winbond Chip ID (Default: 40h)..........................................................................10
Register 8: M/N Program (Default: D0h) ...............................................................................10
Register 9: M/N Program Register (Default: 7Ah).................................................................10
Register 10: Reserved (Default: 03h) ....................................................................................11
Register 11: Spread Spectrum Programming (Default: 0Bh) ...............................................11
Register 12: Divisor Control (Default: 72h)............................................................................11
Register 13: Step-less Enable Control (Default: 3Fh)...........................................................12
Register 14: Control (Default: 10h) ........................................................................................12
Register 15: SST Control (Default: E9h) ...............................................................................13
Register 16: Skew Control (Default: E0h) .............................................................................13
Register 17: Slew rate Control (Default: 03h)........................................................................14
Register 18: Reserved (Default: 7Ah)....................................................................................14
Register 19: Control (Default: 22h) ........................................................................................14
Register 20: Watch dog timer (Default: 88h).........................................................................15
- II -
W83195BR-202/W83195BG-202
CLOCK GEN. FOR AMD K8 SYSTEM SERIES CHIPSET
7.22
8.
8.1
8.2
8.3
8.4
9.
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.
11.
12.
Register21: Control (Default: 2Bh).........................................................................................15
Block Write protocol ...............................................................................................................16
Block Read protocol ...............................................................................................................16
Byte Write protocol .................................................................................................................16
Byte Read protocol.................................................................................................................16
ABSOLUTE MAXIMUM RATINGS .......................................................................................17
General Operating Characteristics ........................................................................................17
Skew Group timing clock........................................................................................................18
CPU Electrical Characteristics ...............................................................................................18
AGP Electrical Characteristics ...............................................................................................19
PCI Electrical Characteristics.................................................................................................19
24M, 48M Electrical Characteristics ......................................................................................20
REF Electrical Characteristics ...............................................................................................20
PCIEX 0.7V Electrical Characteristics ...................................................................................21
ACCESS INTERFACE.............................................................................................................. 16
SPECIFICATIONS.................................................................................................................... 17
ORDERING INFORMATION .................................................................................................... 22
HOW TO READ THE TOP MARKING ..................................................................................... 22
PACKAGE DRAWING AND DIMENSIONS ............................................................................. 23
- III -
Publication Release Date: Apr. 2006
Revision 0.6
W83195BR-202/W83195BG-202
CLOCK GEN. FOR AMD K8 SYSTEM SERIES CHIPSET
1. GENERAL DESCRIPTION
The
W83195BR-202
is a Clock Synthesizer meets AMD ATHLON 64 and OPTERON Processors
series chipset. The
W83195BR-202
provides all clocks required for high-speed microprocessor and
provides step-less frequency programming and 32 different frequencies of CPU, AGP, PCI, PCI-
Express clocks setting. All clocks are externally selectable with smooth transitions.
Employing the use
of a serially programmable I C interface, this device can adjust the output clocks by configuring the
frequency setting, the output divider ratios, selecting the ideal spread percentage, the output skew, the
output strength, and enabling/disabling each individual output clock.
By the way, the W83195BR-202 also
2
has watchdog timer and reset out pin to support auto-reset when systems hanging caused by
improper frequency setting.
2. PRODUCT FEATURES
•
2 pair 3.3V push-pull differential clock outputs for CPU and Chipset
•
6 PCI-Ex differential pairs
•
3 AGP clock output
•
7 PCI synchronous clocks
•
1 48MHz clock outputs
•
1 24_48MHz for I/O chip, default 24MHz
•
2 REF 14.318MHz clock outputs
•
I
2
C 2-Wire serial interface supports block and byte mode read/write
•
Step-less frequency programming
•
Smooth frequency switch with selections from 100 to 400MHz
•
Programmable clock outputs Slew rate control and Skew control
•
+/- 0.5% center type spread spectrum in table mode
•
Programmable S.S.T. scale to reduce EMI
•
Programmable registers to enable/stop each output and select modes
•
Watch dog timer and RESET# output pins
•
56-pin SSOP package
-1-
Publication Release Date: Apr. 2006
Revision 0.6