FS6232-01 AMI Semiconductor, FS6232-01 Datasheet

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FS6232-01

Manufacturer Part Number
FS6232-01
Description
Two-way MP motherboard clock generator IC
Manufacturer
AMI Semiconductor
Datasheet

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FS6232-01
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FS6232-01
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ISO9001
ISO9001
ISO9001
ISO9001
September 2000
1.0
Table 1: Clock Parameters
Table 2: Clock Offsets
Intel and Pentium are registered trademarks of Intel Corporation. Lexmark is a trademark of Lexmark International, Inc. Non-linear spread spectrum modulation profile is licensed under US Patent
No. 5488627, Lexmark International, Inc. This document contains information on a preproduction product. Specifications and information herein are subject to change without notice.
HOST_P
HOST_N
MREF_P
MREF_N
AMERICAN MICROSYSTEMS, INC.
CLOCK
GROUP
CK66
CK48
REF
PCI
CK66 leads PCI
Generates all clocks required for single and two-way
multi-processor (MP) platforms, including:
M
M
M
M
M
M
Control of current-mode Host clocks via IREF current
programming pin and ISEL_0:1 current multiplier pins
Host clock frequency selection via the SEL_A,
SEL_B, and SEL133/100# pins
Active-low PWR_DWN# signal allows one complete
clock cycle on each clock outputs and then shuts
down the crystal oscillator, PLLs, and outputs
Spread-spectrum modulation (-0.5% at 31.5kHz) of
SSCG PLL clocks, enabled via SS_EN# input
Supports test mode and tristate output control to fa-
cilitate board testing
Available in a 56-pin SSOP and TSSOP
RELATION
Features
Four differential current-mode Host clock pairs
Four 66.67MHz 3.3V CK66 clock outputs
Ten 33.3MHz 3.3V PCI clock outputs
Two 3.3V Memory Reference clock outputs
Two 48MHz 3.3V CK48 clock outputs
Two buffered copies of the crystal reference
PINS
10
#
4
4
1
1
4
2
2
VOLTAGE
SUPPLY
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
PHASE
SUPPLY
GROUP
VDD_66
VDD_48
VDD_H
VDD_M
VDD_R
VDD_P
1.5ns
MIN
FREQ.
133.33
100.00
48.008
14.318
(MHz)
66.67
50.00
66.67
33.33
TYP
PHASE
180°
180°
3.5ns
MAX
SKEW
(MAX)
Pair to
150ps
250ps
300ps
Pair
-
-
-
Figure 1: Block Diagram
Figure 2: Pin Configuration
SEL133/100#
PWR_DWN#
Two-Way MP Motherboard Clock Generator IC
Two-Way MP Motherboard Clock Generator IC
Two-Way MP Motherboard Clock Generator IC
Two-Way MP Motherboard Clock Generator IC
ISEL_0:1
SEL_A:B
SS_EN#
XOUT
IREF
XIN
CK48_0 / SEL_A
CK48_1 / SEL_B
REF_0 / ISEL_0
REF_1 / ISEL_1
SEL133/100#
PWR_DWN#
FS6232
VDD_48
Oscillator
VSS_48
VDD_R
VDD_P
VDD_P
VDD_P
VSS_R
VSS_P
VSS_P
VSS_P
Crystal
XOUT
PCI_0
PCI_1
PCI_2
PCI_3
PCI_4
PCI_5
PCI_6
PCI_7
PCI_8
PCI_9
Control
SSCG
PLL
XIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
delay
÷1
÷2
÷3
÷4
PLL
FS6232
FS6232
FS6232
FS6232
÷2
adjust
÷4
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
VDD_M
MREF_P
MREF_N
VSS_M
SS_EN#
HOST_P1
HOST_N1
VDD_H
HOST_P2
HOST_N2
VSS_H
HOST_P3
HOST_N3
VDD_H
HOST_P4
HOST_N4
VSS_H
IREF
VDD
VSS
VDD_66
CK66_0
CK66_1
VSS_66
VSS_66
CK66_2
CK66_3
VDD_66
VDD_R
REF_0:1
VSS_R
VDD_H
HOST_P1:4
HOST_N1:4
VSS_H
VDD_66
CK66_0:3
VSS_66
VDD_P
PCI_0:9
VSS_P
VDD_M
MREF_P
MREF_N
VSS_M
VDD_48
CK48_0:1
VSS_48
-01
-01
-01
-01
9.18.00
IntSKS

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FS6232-01 Summary of contents

Page 1

... FS6232 FS6232 FS6232 XIN Crystal Oscillator XOUT adjust ISEL_0:1 IREF ÷1 ÷2 SSCG SS_EN# PLL ÷3 ÷4 Control SEL_A:B ÷2 delay ÷4 PLL FS6232 VSS_R 1 56 REF_0 / ISEL_0 2 55 REF_1 / ISEL_1 3 54 VDD_R 4 53 XIN 5 52 XOUT 6 51 VSS_P 7 50 PCI_0 ...

Page 2

... FS6232-01 FS6232-01 FS6232-01 FS6232-01 Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Table 3: Pin Descriptions Key Analog Input Analog Output Digital Input Digital Output Power/Ground Active-low pin PIN TYPE NAME CK48_0 25 DIO ...

Page 3

... The mirrored reference current can be increased by adding one or more copies of the mirror current together. The additional current is controlled by the logic settings on the ISEL_0 and ISEL_1 pins. Table 6: Current Multiplier 3 FS6232-01 FS6232-01 FS6232-01 FS6232-01 CLOCK OUTPUTS (MHz) CK66_ PCI_ 0:3 0:9 66.67 33.33 reserved reserved reserved ...

Page 4

... FS6232-01 FS6232-01 FS6232-01 FS6232-01 Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Figure 2: Current Reference Circuit VDD_I (3.3V) 2R 1.1V Mirror Current R IREF HOST_N Reference R Current I IREF REF Table 7: HOST Current Selection PROGRAM REFERENCE CURRENT RESISTOR ...

Page 5

... DWN# Upon the release of PWR_DWN# (power-up), external circuitry should allow a minimum of 3ms for the PLL to lock before enabling any clocks. After REF Figure 4: I/O Pin Programming Clock Trace 5 FS6232-01 FS6232-01 FS6232-01 FS6232-01 LATENCY SIGNAL STATE MIN. Output: 2 clocks Power 0 2 REF OFF ...

Page 6

... FS6232-01 FS6232-01 FS6232-01 FS6232-01 Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC 6.0 Electrical Specifications Table 10: Absolute Maximum Ratings Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These conditions represent a stress rating only, and functional operation of the device at these or any other conditions above the operational limits noted in this specification is not implied ...

Page 7

... Measured at 1.65V, output driving high 0V; shorted for 30s, max. OSH 3.3V; shorted for 30s, max. OSL O 7 FS6232-01 FS6232-01 FS6232-01 FS6232-01 = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal A MIN. TYP. 260 =475 , I =6I IREF OH REF =475 , I =6I 250 IREF OH REF 2 ...

Page 8

... FS6232-01 FS6232-01 FS6232-01 FS6232-01 Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Table 13: DC Electrical Specifications, continued Unless otherwise stated, all power supplies = 3.3V ± 5%, no load on any output, and ambient temperature range T characterization data and are not currently production tested to any specific limits. MIN and MAX characterization data are 3 f rom typical. Negative currents indicate current flows out of the device. ...

Page 9

... Ratio of high pulse width to one clock period measured at 1.5V t From rising edge to rising edge at 1.5V Measured @ 0.4V – 2.4V min t Measured @ 0.4V – 2.4V max t Measured @ 2.4V – 0.4V min t Measured @ 2.4V – 0.4V max 9 FS6232-01 FS6232-01 FS6232-01 FS6232-01 MIN. 1.5 1.0 1 475 , X, IREF = 49 =33 =49 475 , X, IREF = 49.9 P ...

Page 10

... FS6232-01 FS6232-01 FS6232-01 FS6232-01 Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Table 15: AC Timing Specifications, continued Unless otherwise stated, all power supplies = 3.3V, no load on any output, and ambient temperature T are not currently production tested to any specific limits. MIN and MAX characterization data are 3 f rom typical. Spread spectrum modulation is disabled except for Rise/Fall time measurements. ...

Page 11

... FS6232-01 FS6232-01 FS6232-01 FS6232-01 150 125 100 0.5 1 1.5 2 -25 -50 -75 -100 -125 -150 Output Voltage (V) Data in this table represents nominal characterization data only 120 100 0 ...

Page 12

... FS6232-01 FS6232-01 FS6232-01 FS6232-01 Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC 7.0 Package Information Table 18: 56-pin SSOP (0.300") Package Dimensions DIMENSIONS INCHES MILLIMETERS MIN. MAX. MIN. MAX. A 0.095 0.110 2.41 2.79 A 0.008 0.016 0.20 0. 0.008 ...

Page 13

... Shortest trace + wire to first adjacent trace Longest trace + wire to next adjacent trace C 13 Shortest trace + wire to next adjacent trace 13 FS6232-01 FS6232-01 FS6232-01 FS6232-01 Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator IC Two-Way MP Motherboard Clock Generator SEATING PLANE ...

Page 14

... Table 22: Device Ordering Codes DEVICE NUMBER ORDERING CODE 11995-801 11995-811 FS6232-01 11995-201 11995-211 Copyright © 2000 American Microsystems, Inc. Devices sold by AMI are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMI makes no warranty, express, statutory implied or by description, regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. AMI makes no warranty of merchantability or fitness for any purposes. AMI re- serves the right to discontinue production and change specifications and prices at any time and without notice. AMI’ ...

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