Sycard Technology SMextend 750 User manual

SMextend 750
SmartMedia Extender
User’s Manual
Preliminary
M200042-00
July 1998
Sycard Technology
1180-F Miraloma Way
Sunnyvale, CA 94086
[phone]
[phone] FAX
http://www.sycard.com

SMextend 750 User’s Manual Page 1
M200042-00 1998 Sycard Technology
1.0 Introduction1.0 Introduction
Sycard Technology's SMextend 750 SmartMedia (SSFDC) extender card is a debug tool for SmartMedia
development and test. SMextend offers the following features:
•Supports 3.3, 5V or dual voltage hosts
•Configurable for 3.3V or 5V operation
•4 layer construction to insure low noise environment
•All 22 pins available as test points
•Signals clearly marked
•Vcc can be isolated through jumper blocks for current measurements
•Surface mount resistors can be added to any signal line
•Vcc LEDs indicate 3.3V or 5V operation
•Convenient grounding posts for scope probes or other test equipment
2.0 Using the SMextend 7502.0 Using the SMextend 750
The SMextend 750 must be configured for 3.3, 5.0, or dual voltage operation prior to use. Section 2.1 describes the
procedure for first time setup.
CautionCaution: Insertion and removal of the extender and SmartMedia card should be done with care. The
SmartMedia’s fragile connectors may be broken or bent if improper force is used. Both card and extender
should be inserted straight without any lateral movement or force. Proper care and use of the extender card
will insure years of trouble free operation.
GND
GND
GND
CLE
ALE
WE#
WP#
D0
D1
D2
D3
D4
D5
D6
D7
VCC
VCC
CE#
RE#
R/B#
OP
LVD
JP2
JP3
JP4
LED EN
5V
VCC
GND
GND Vcc
Sycard
Technology
SMextend 750
5V
3.3V
Figure 2.0-1 The SMextend 750Figure 2.0-1 The SMextend 750

Page 2SMextend 750 User’s Manual
1998 Sycard Technology M200042-00
2.1 Preparing the SMextend 750 for use2.1 Preparing the SMextend 750 for use
As shipped from the factory the SMextend 750 is configured with voltage keys disabled. In this condition, the
SMextend may not be accepted into many SmartMedia sockets. The SmartMedia standard defines two voltage keys,
one for 3.3V and one for 5V. 3.3V only cards have a cutout corner adjacent to pin 22 of the connector. 5V only
cards have a cutout adjacent to pin 12. Cards that can operate at both 3.3V and 5V have both cutouts. The following
section describes how to configure the SMextend for the desired operating voltage.
2.1.1 Removing the voltage key.2.1.1 Removing the voltage key.
The 3V key should be removed if the card is to be used in a 3.3V host. The 5V key should be removed for 5V hosts.
The voltage key can be removed with a small pair of pliers or a wire cutter. The SMextend 750 PCB is scored along
the proper cut marks. After the user removes the keys, it may be necessary to clean the freshly cut edge of the board
with a small file. Some sockets may not accept the SMextend 750 if these edges are not smooth.
NoteNote: Once removed, the voltage keys cannot be reattached.
2.2 Using the SMextend2.2 Using the SMextend
Use of the SMextend 750 is fairly straightforward. The SMextend is inserted into the host socket with the connector
pattern in the correct orientation. The SmartMedia card is then inserted, with the connector pattern facing down, into
SMextend 750’s socket.
CautionCaution: The SMextend socket is keyed to accept both 3.3V and 5V SmartMedia cards. This configuration
could allow a 3.3V only card to be plugged into a 5V host causing damage to either the card or the host. The
user should verify compatibility by first trying to inserting the SmartMedia card into the host prior to using
the extender card.
2.3 Test points2.3 Test points
All 22-pins of the interface are available to probe through clearly marked headers. The headers are standard 0.1”
dual row headers with 0.025” posts designed to accept a wide variety of test probes and cable assemblies.
2.4 Power Indicators2.4 Power Indicators
Two LED power indicators display the status of the socket’s Vcc. The PWR LED indicates that power is applied to
the board. When both the PWR LED and the 5V LED are lit, a Vcc of greater than approximately 3.5V is present.
When only the PWR LED is lit, the Vcc is at a level of less than 3.5V.
NoteNote: The power LEDs are designed to indicate the presence of power on the Vcc supply pins. The LEDs
do not provide an accurate measurement of Vcc. Use a voltmeter to determine the actual operating voltage.
In some low power applications, the current drawn by the power LEDs (10-20mA) may cause problems. The
SMextend is capable of disabling the LED voltage indication by removing the jumper labeled LED EN at JP4.
2.5 Current Measurements2.5 Current Measurements
The Vcc power bus may be isolated from the SmartMedia Card socket through two jumper blocks labeled JP2 and
JP3. Both jumpers must be removed to isolate the power. A current meter can be inserted to measure card current
consumption.
CautionCaution: Care must be taken to insure that the current measuring device is inserted before turning on power
to the host socket. Improper power sequencing may cause a damaging latchup condition.

SMextend 750 User’s Manual Page 3
M200042-00 1998 Sycard Technology
2.6 Termination Area2.6 Termination Area
An area with SMT resistors is located between the test points and the card connector allows access to all SmartMedia
signals. A series of surface mount pads allows the user to isolate a signal by cutting a trace. The user may also add
series resistors to any signal.
When shipped from the factory, the resistor pads are shorted with PCB traces. In order to insert series resistor, these
traces must be cut prior to soldering the resistor to the board. Figure 2.3-1 illustrate the termination areas located on
the back of the SMextend board. Use this guide when making modifications to the board, since the silk-screen
designations may be difficult to read.
5V
3V
R13
R12
R11
R10
R9
R8
R7
R6
R5
R14
R15
R16
R18
R17
R1
R2
R3
CLE
ALE
WE#
WP#
D0
D1
D2
D3
CE#
RE#
R/B#
OP
LVD
D7
D6
D5
D4
1
11
12
22
Figure 2.6-1 Termination Area - SoldeFigure 2.6-1 Termination Area - Solder Sider Side
R13
R12
R11
R10
R9
R8
R7
R6
R5
R14
R15
R16
R18
R17
R1
R2
R3
CLE
ALE
WE#
WP#
D0
D1
D2
D3
CE#
RE#
R/B#
OP
LVD
D7
D6
D5
D4
Figure 2.6-2 Termination Area - Close-upFigure 2.6-2 Termination Area - Close-up

Page 4SMextend 750 User’s Manual
1998 Sycard Technology M200042-00
AppendixAppendix
A. SmartMedia Pin DescriptionA. SmartMedia Pin Description
Pin Name Description Pin Name Description
1Vss Ground 12 Vcc Power
2CLE Command Latch Enable 13 D4 Address/Data Bit 4
3ALE Address Latch Enable 14 D5 Address/Data Bit 5
4WE# Write Enable 15 D6 Address/Data Bit 6
5WP# Write Protect 16 D7 Address/Data Bit 7
6D0 Address/Data Bit 0 17 LVD Low Voltage Detect
7D1 Address/Data Bit 1 18 GND Ground
8D2 Address/Data Bit 2 19 R/B# Ready / Busy#
9D3 Address/Data Bit 3 20 RE# Read Enable
10 Vss Ground 21 CE# Card Enable
11 Vss Ground / Card Detect 22 Vcc Power
111
12
22
3V
5V

SMextend 750 User’s Manual Page 5
M200042-00 1998 Sycard Technology
B. SMextend 750 SchematicB. SMextend 750 Schematic

Date: May 22, 1998 Sheet 1 of 1
Size Document Number REV
B 140031 A
Title SSFDC EXTENDER
Sycard Technology
CLE 2
ALE 3
WE 4
WP 5
IO0 6
IO1 7
IO2 8
IO3 9
CD 11
IO4 13
IO5 14
IO6 15
IO7 16
LVD 17
OP 18
R/B 19
RE 20
CE 21
VCC 12
VCC 22
GND 1
GND 10
P1
SSFDC
CLE
ALE
WE#
WP#
R14 0
R15 0
R16 0
R17 0
R18 0 CLER
ALER
WER#
WPR#
CLE
2
ALE
3
WE
4
WP
5
IO0
6
IO1
7
IO2
8
IO3
9
CD
11
IO4
13
IO5
14
IO6
15
IO7
16
LVD
17
OP
18
R/B
19
RE
20
CE
21
3VSW1
23
3VSW2
24
5VSW1
25
5VSW2
26
VCC
12
VCC
22
GND
1
GND
10
J1
SSFDC CONN
AD0R
AD1R
AD2R
AD3R
AD4R
AD5R
AD6R
AD7R
LVDR
OPR
R1 0
R2 0
R5 0
R6 0
R3 0
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
LVD
OP
R/B#
RE#
CE#
VCC
R7 0
R8 0
R9 0
R10 0
R11 0
R12 0
R/BR#
RER#
CER#
VCC1
R13 0
VCC1
JP2
JUMPER
OP and CD# are optional power pins.
VCC
C1
0.1uF C3 0.1uF C4 0.1uF JP3
JUMPER
C5
0.1uF C6 0.1uF C2 0.1uF
VCC
C8
0.1uF
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
JP1
HEADER 11X2
CLE
ALE
WE#
WP#
AD0
AD1
AD2
AD3
CE#
RE#
R/B#
AD7
AD6
AD5
AD4
OP
LVD
VCC
R19
330
R20
110
3.3V Zener
SOT23
VCC LED
5V LED
D1
1N5226
D2
RED LED
D3
YELLOW LED
JP4
JUMPER
VCC
File = ORCAD31\SSFDC\SSFDC1.S31