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PDF MC145192EVK Data sheet ( Hoja de datos )
| Número de pieza | MC145192EVK | |
| Descripción | Evaluation Board Manual | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MC145192 and MC145202
Evaluation Board Manual
MC145192EVK
MC145202EVK
INTRODUCTION
The MC145192EVK and MC145202EVK are two versions of one board with a few component changes.
They allow users to exercise features of both devices and to build PLLs which meet individual perfor-
mance requirements. The control program works with any board and can be used with other Motorola
PLL devices (MC145190, MC145191, MC145200, MC145201, MC145220*). It will select frequency de-
faults that apply to each. All board functions are controlled through the printer port of an IBM PC. Up to
three different EVKs may be controlled at the same time from one printer port. The functional block dia-
gram is given in Figure 1.
This manual is divided into two sections. Section 1 describes the hardware and Section 2 covers the
software control program.
External Reference Input
TCXO Reference
Frequency
Control Data
MC145192
MC145202
PLL
Fin
Out A, Out B
Lock Detect
74HCT241, 74LS126
Buffer Logic
PDout
Current
Control Voltage
Loop Filter
VCO
733–751 MHz
2nd Harmonic
Filter, Amplifier
Isolation Resistor
Logic Control Switches
RF Output
Parallel Port Connector
Figure 1. Evaluation Kit Block Diagram
* The MC145220 is not available with Rev. 2.5 software.
All brand names and product names appearing in this document are registered trademarks or trademarks of their respective holders.
REV 1
3/96
M© OMoTtoOroRla,OInLc.A1996
MC145192EVK • MC145202EVK
1
1 page  
design simple, reduce noise, and reduce the quantity of traces susceptible to stray pickup. About 56 dB
rejection of fundamental and 23 dB gain is provided by the harmonic filter amplifier. This allows the ’202
to lock at 1466 – 1486 MHz.
A single VCO model is used for both boards. It is an internal Motorola part which is not sold for other
applications. The ’192 operates at half the output frequency and step size of the ’202. This allows the
same loop filter components to be used. RF is fed to the PLL chip Fin input through voltage dividers R14
and R10. These two resistors terminate the PLL chip RF input with 50 ohms and provide isolation.
Both boards use a phase detector current of 2 mA. J1 and J2 are removable jumpers and cut traces.
They are used as connection points for a current measurement of VPD or VCC. A potentiometer VR1 is
used to set M2 (14.4 MHz TCXO) on frequency.
CCoOmMpPonOeNntEsNthTaSt aUrÁÁÁÁÁÁÁÁÁÁeNnIÁÁÁÁÁÁÁÁÁÁQotUtÁÁÁÁÁÁÁÁÁÁhEeTCÁÁÁÁÁÁÁÁÁÁsURRJO2a31282mÁÁÁÁÁÁÁÁÁÁEeAÁÁÁÁÁÁÁÁÁÁoCnHÁÁÁÁÁÁÁÁÁÁallEÁÁÁÁÁÁÁÁÁEVVKKÁÁÁÁÁÁÁÁÁMsN’1ÁÁÁÁÁÁÁÁÁCao19r1t083e24UÁÁÁÁÁÁÁÁÁEΩkVg5sΩVi1veÁÁÁÁÁÁÁÁÁK9ed2nÁÁÁÁÁÁÁÁÁin tÁÁÁÁÁÁÁÁÁÁheÁÁÁÁÁÁÁÁÁÁfollMÁÁÁÁÁÁÁÁÁÁoN’w2C31o0iÁÁÁÁÁÁÁÁÁÁ.1.nt59204gUEVk5pÁÁÁÁÁÁÁÁÁÁstVΩ2FaeK0bdÁÁÁÁÁÁÁÁÁÁ2le: ÁÁÁÁÁÁÁÁÁÁ
EXTERNAL REFERENCE INPUT
As shipped, all boards are configured for a 14.4 MHz TCXO (supplied). To use an external reference,
disconnect J13 and connect J9. Use a reference signal at J10 which complies with data sheet require-
ments. Then modify the reference frequency in the program main menu to reflect the changes made ( [F]
menu item ).
DATA TRANSFER FROM COMPUTER TO EVK
To control the serial input EVK with the parallel printer port, a conversion is done. Printer cards are de-
signed to output eight bits through eight lines. A bit mask is used to obtain the bit combination for the
three required output lines (Data, Clock, Load). As bytes are sent to the printer card in sequence, it ap-
pears to be a serial transfer. The printer port is used because data transfer using the serial port is much
slower. A standard IBM PC can support a parallel port data rate of 4.77 MHz.
IBM PCs and compatibles can accept up to three printer port cards. These ports are called LPT1, LPT2,
and LPT3. Each printer card has jumpers or DIP switches on it to set a unique address. Two sets of
addresses are in common use. One set applies to IBM PC XT, AT, and clones. The other is for the PS 2
line. To load data into the EVK, the correct address must be selected. The program default is $278, which
is LPT1 in a clone. If $278 is not the address in use, it must be modified by entering the O menu item in
the main menu. All allowed addresses given in hexadecimal are as follows:
Label
LPT1
LPT2
LPT3
IBM PC and Clones
278
378
3BC
PS 2
3BC
378
278
MOTOROLA
MC145192EVK • MC145202EVK
5
5 Page 
SCREENS
Screen #1 ‘Define boards to program’
The first screen the user sees when the program begins has a screen title of ‘Define boards to program’.
This screen is used to define which boards are connected to the LPT1 printer port of the computer. Refer
to the hardware setup section to determine how to cascade the evaluation boards.
This screen is also available from the main menu (screen #2). The user may return to this screen to
change the boards that are connected to the computer.
The screen is divided into two sections. The upper section shows the current board type settings while
the lower section allows the user to define a board’s type and position in the cascade connection.
Notice the section labeled ‘Available Boards:’ shows three labels, one for each board that may be cas-
caded. When the program first starts up it shows ‘N/A’ (not applicable) after each label. The user must
enter the boards contiguously. Initially the program requests for the user to enter board A’s type. This is
signified by A (in the screen below) being set to A. The user can the select the board type for board A by
typing the corresponding command.
Once board A’s type is selected, A automatically increments to B and the process may be repeated.
Once all boards have been correctly defined, the user may select [Q] which sends default data to the
boards and continues to the next screen. NOTE: Before selecting [Q], the user should insure that the
DIP switch settings shown in Figure 2 are correct.
If a board is incorrectly identified, select the board that is not correctly defined by typing the correspond-
ing board letter ([A], [B], or [C]). The user may then reselect the board’s type. Once the board has been
identified, the user may select the letter ([A], [B], or [C]) of the board followed by [S] to change hardware–
dependent variables for that board. See screen #1b.
[X] can be selected to exit the program completely. [?] can be selected to view the help screen.
Welcome to MC145xxx EVK Demonstration Program, rev 2.5
Define boards to program
Available Boards:
Brd [A]!: N/A
Brd [B]!: N/A
Brd [C]!: N/A
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Board A is:
[–]! no board
[4]! MC145200
[1]! MC145190
[5]! MC145201
[2]! MC145191
[6]! MC145202
[3]! MC145192
[–] Boards defined, Continue
MOTOROLA
[X]! Terminate demonstration program. [?]! View help screen.
MC145192EVK • MC145202EVK
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MC145192EVK.PDF ] | |
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