REVISIONS
NO.
DESCRIPTION
APPROVED
The information disclosed herein was originated by and is the
property of MAZeT. MAZeT reserves all patent, proprietary, design,
use, sales, manufacturing an reproduction rights thereto. Product
names used in this publication are for identification purposes only
and may be trademark of their respective companies.
1
V1.0
2000-02-25
Approvals
Date
MAZeT GmbH
Drawn
2000-02-25
Checked
2000-02-25
Status: Data sheet
MAZeT GmbH Sales office
Gschwitzer Strae 32
D-07745 Jena / Germany
Phone: +49/3641-2809-0
Fax: +49/3641-2809-12
Email: sales@MAZeT.de
Released
2000-02-25
DOC. NO: DB-99-050e
Sheet 1 OF 4
DATA-SHEET
MZP404
Impulse Intermediate Buffer IC
Purpose
buffer short pulse transients from resolver converter MIP200
especially for connection to optoelectronical encoders with resolver
converter MIP200
applications in high-resolution linear and rotary position measurement
Index
1.
Description 2
2.
Pin out
3
3.
Specification
4
Absolute maximum ratings
4
Recommended operating conditions
4
REVISIONS
NO
DESCRIPTION
APPROVED
1
V1.0
2000-02-25
The information in this publication is believed to be accurate in all respects at the time of
publication. MAZeT reserves the right to make changes in its products without notice in
order to improve design or performance characteristics.
DOC. NO:
DB-99-050e
Sheet 2 of 4
DATA-SHEET MZP404
1. DESCRIPTION
The interpolation principle of the MIP200GC circuit uses an integrated clock generator. The
non-stabilised frequency depends on processing technology and environmental parameters like
voltage and temperature. It is typically at 25 MHz, but may vary up to approx. 38 MHz. Since
the square wave output signals are a result of the system clock frequency, edges of the output
signals occur at integer multiples of the clock frequency only. The minimum time interval
between successive edges is approx. 27ns at maximum clock frequency. That means in order
to keep track with the square waves it is necessary t use a counter with a counter frequency of
at least 40 MHz (e.g. MAC4124A).
Impulse Intermediate Buffer
MZP404
R1
Z1
Z2
IDX_IN
CLK
IDX_OUT
Z1_IN
Z2_IN
Z1_OUT
RST_N
DC
Z2_OUT
8
GND/VCC
Interpolator IC
MIP200
quartz oscillator
track 1
track 2
reference
Figure: Application for MZP404
The pulse transient buffer IC MZP404 targets at applications with counter IC's having a lower
input frequency then 40 MHz.
The square wave output signals Z1 and Z2 of the encoder resolver MIP200, connected to
the inputs Z1_IN and Z2_IN of the IC MZP404, are sampled with the frequency at pin CLK
and the edge events are saved to the internal FIFO memory. The MZP404 outputs square
wave signals at pins Z1_OUT and Z2_OUT at frequency adjustable with DC[7:0]. The index
signal (also known as reference signal) at IDX_IN outputs at IDX_OUT in-phase to the
square wave signals Z1_OUT and Z2_OUT.
The resources of the used CPLD limit the ,,FIFO-depth" of the MZP404, i.e. it's possible to
record 7 sequent edges of the same direction. Because of the sporadic nature of sequent
edges with minimum time interval and simultaneously output of accumulated edge events at
pins Z1_OUT and Z2_OUT at clock CLK the function of the MZP404 is warranted. The
conditions for this is that the frequency of the square wave input of the MZP404 (i.e.
interpolation factor * resolution of the encoder * rotations per second) is lower the frequency of
the square wave output signals at Z1_OUT and Z2_OUT (= fCLK/4*[1+dc]). The value "dc" is
binary adjustable at the inputs DC[7:0]. The value dc=0 is illegal.
REVISIONS
NO
DESCRIPTION
APPROVED
1
V1.0
2000-02-25
The information in this publication is believed to be accurate in all respects at the time of
publication. MAZeT reserves the right to make changes in its products without notice in
order to improve design or performance characteristics.
DOC. NO:
DB-99-050e
Sheet 3 of 4
DATA-SHEET MZP404
The externally provided clock frequency at pin CLK has to be higher than 40 MHz to sample
the minimum time interval of about 27ns between sequent edges of the square wave input
signals. With 40 MHz clock frequency a maximum frequency at outputs Z1_OUT and Z2_OUT
of 5 MHz can be reached (dc=1).
In order to reach the maximum square wave output frequency of MIP200 (6.25 MHz) at it's
typical clock frequency f
typ
=25 MHz it requires a clock frequency of 50 MHz at pin CLK of
MZP404 and dc=1.
The function of the MZP404 results in a time delay of the edges of the output square waves in
respect to the input square waves. The maximum time delay is fCLK/[1+dc].
Example: f
CLK
= 50 MHz
dc
f
out
[MHz]
Delay [s]
1
6.25
0.04
9
1.25
0.20
24
500 kHz
0.50
49
250 kHz
1.00
99
125 kHz
2.00
255
48.75 kHz
5.12
2. PIN OUT
IC:
Lattice ispLSI 2032
Package: TQFP44
Inputs:
Name
Pin-
No.
Z1_IN
15
Z2
16
IDX
13
DEL-
CTR[7..0]
26..
19
CLK
5
/RESET
33
Outputs:
Z1_OUT
42
Z2_OUT
41
IDX_OUT
44
MZP404
1
2
3
4
CLK 5
VCC 6
7
8
9
10
11
33 /RESET
32
31
30
29 VCC
28 VCC
27
26 DC7
25 DC6
24 DC5
23 DC4
44
I
D
X
_
O
U
T
43
42
Z
1
_
O
U
T
41
Z
2
_
O
U
T
40
39
G
N
D
38
37
36
35
34
1
2
ID
X
_
IN
1
3
1
4
Z1
_
I
N
1
5
Z2
_
I
N
1
6
G
N
D
1
7
1
8
D
C
0
19
D
C
1
20
D
C
2
21
D
C
3
22
REVISIONS
NO
DESCRIPTION
APPROVED
1
V1.0
2000-02-25
The information in this publication is believed to be accurate in all respects at the time of
publication. MAZeT reserves the right to make changes in its products without notice in
order to improve design or performance characteristics.
DOC. NO:
DB-99-050e
Sheet 4 of 4
DATA-SHEET MZP404
3. SPECIFICATION
Absolute maximum ratings (from Lattice datasheet of CPLD ispLSI 2023)
parameter
symbol
min
max
unit
supply voltage
VDD
-0,3
7,0
V
power dissipation
PD
0,15
W
operating temperature
Ta
0
70
C
storage temperature
Tstg
-55
150
C
Recommended operating conditions
Parameter
symbol
conditions
min
max
unit
supply voltage
V
DDA
4,75
5,25
V
For more detailed information, please contact
MAZeT GmbH
Herr Dr. Mahler
Gschwitzer Str. 32
D-07745 Jena/Germany
Phone: +49 3641 2809-0
Telefax: +49 3641 2809-12
EMAIL: sales@MAZeT.de
http://www.MAZeT.de
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