UM10707
NVT4555 evaluation board OM13480
Rev. 1 — 10 July 2013
User manual
Document information
Info
Keywords
Abstract
Content
NVT4555UK, OM13480, SIM card, voltage translator, level translator,
ETSI, IMT-2000, ISO7816, evaluation board, demonstration board
The NVT4555 is used in SIM card voltage level translation applications for
SIM I/O buses with incompatible logic levels to the host processor.
NXP Semiconductors
UM10707
NVT4555 evaluation board OM13480
Revision history
Rev
v.1
Date
20130710
Description
user manual; initial release
Contact information
For more information, please visit:
http://www.nxp.com
For sales office addresses, please send an email to:
salesaddresses@nxp.com
UM10707
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
User manual
Rev. 1 — 10 July 2013
2 of 8
NXP Semiconductors
UM10707
NVT4555 evaluation board OM13480
1. Introduction
The NVT4555UK evaluation board (OM13480) is built for interfacing a SIM card socket to
a single-voltage host-side interface. The NVT4555 contains one voltage select pin (CTRL)
to select either 1.8 V or 2.95 V for SIM card power supply, and one active HIGH enable
pin (EN) to enable normal operation. The data, clock and reset paths can operate beyond
5 MHz. The I/O channel is bidirectional, while the reset and clock are unidirectional. The
NVT4555 is compliant with all ETSI, IMT-2000 and ISO-7816 SIM/Smart card interface
requirements.
Refer to NVT4555 data sheet (Ref.
1)
for more detailed information.
002aah681
Fig 1.
NVT4555UK SIM card voltage level translators evaluation board (OM13480)
UM10707
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
User manual
Rev. 1 — 10 July 2013
3 of 8
NXP Semiconductors
UM10707
NVT4555 evaluation board OM13480
2. Hardware description
2.1 Schematic
The NVT4555UK evaluation board was intended for operation as a stand-alone part or as
part of the system. Proper voltages must be supplied at the connectors for V
CC
, V
BAT
and
GND. The following notes are comments generated so that a better understanding of the
evaluation board can be achieved.
X4
VSIM
RST_SIM
CLK_SIM
GND
IO_SIM
C1
C2
C3
C5
C6
C7
SIMLOCK-C707_10M006_512_2
IO_HOST
RST_HOST
CLK_HOST
A1
V
CC
CTRL
GND
V
CC
B2
A2
A3
B3
B1
C1
D1
C2
D2
CLK_SIM
EN
RST_SIM
C3
D3
V
BAT
RST_SIM
VSIM
C1
0.1 µF
C2
1 µF
C3
4.7 µF
TP1
IO_SIM
TP2
CLK_SIM
IO_SIM
GND
V
CC
J1
3
2
1
MA03-1
GND
EN
J2
3
2
1
MA03-1
CLK_HOST
GND
TP7
BU-SMB-V
BU-SMB-V
BU-SMB-V
TP5
TP3
VSIM
V
CC
TP4
RST_HOST
GND
IO_HOST
CTRL
RST_HOST
X1
GND
IO_HOST
X1
GND
CLK_HOST
X1
TP6
NVT4555
U$3
GND
V
BAT
NVT4555
U$4
V
CC
NVT4555
U$5
002aah682
Fig 2.
NVT4555UK evaluation board schematic
UM10707
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
User manual
Rev. 1 — 10 July 2013
4 of 8
NXP Semiconductors
UM10707
NVT4555 evaluation board OM13480
2.2 Bill of materials
Table 1.
Device
U1
NVT4555UK (OM13480) evaluation board bill of materials
Component
NVT4555UK
Manufacturer
NXP
Notes
Supply voltage for the host controller side input/output pins
(CLK_HOST, RST_HOST, IO_HOST). This pin is bypassed with a
0.1
μF
ceramic capacitor.
Host voltage supply bypass capacitor, 0.1
μF
ceramic capacitor.
Battery voltage supply bypass capacitor, 1.0
μF
ceramic capacitor.
SIM voltage supply bypass capacitor, 4.7
μF
ceramic capacitor.
C1
C2
C3
GRM155R70J104KAO1D Murata
GRM155R70J105KA12D
GRM155R60J475ME47
Murata
Murata
2.3 Jumper and header functions
The functions of the jumpers and headers on these evaluation boards are shown in
Table 2.
Table 2.
VCC
Header descriptions for NVT4555UK (OM13480) evaluation board
Function
Host processor I/O supply voltage
input
System GND
Battery input
Device switch enable or disable
control
Device switch 1.8 V or 2.95 V LDO
output voltage control
SMC connector for RST_HOST
Notes
Supply voltage for the host controller side input/output pins
(CLK_HOST, RST_HOST, IO_HOST). This pin is bypassed with
a 0.1
μF
ceramic capacitor.
Ground for the SIM card and host controller.
Battery voltage supply for internal LDO. This pin is bypassed with
a 1.0
μF
ceramic capacitor.
Pins 2-3 shorted: enables NVT4555 device (default).
Pins 1-2 shorted: disables the device
Pins 2-3 shorted: 2.95 V to VSIM (default).
Pins 1-2 shorted: 1.8 V to VSIM.
This connector can be used to connect a host processor to the
evaluation board for use in translating the RST signal to the SIM
card. This I/O can support speeds greater than 5 MHz.
This connector can be used to connect a host processor to the
evaluation board for use in translating the I/O signal to and from
the SIM card. This I/O can support speeds greater than 5 MHz.
This connector can be used to connect a host processor to the
evaluation board for use in translating the SIM signal to the SIM
card. This I/O can support speeds greater than 5 MHz.
This adapter socket can be populated for a SIM card on the board
for user evaluation.
Jumper/header
GND
VBAT
J1 (3-pin)
J2 (2-pin)
X1
X2
SMC connector for IO_HOST
X3
SMC connector for SIM_HOST
X4
SIM card slot
UM10707
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
User manual
Rev. 1 — 10 July 2013
5 of 8
MEMS传感器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
