|
|
PDF VPU16551 Data sheet ( Hoja de datos )
| Número de pieza | VPU16551 | |
| Descripción | Veratile PC Card UART | |
| Fabricantes | Elan | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de VPU16551 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
Elan Digital Systems Ltd.
www.elandigitalsystems.com
VPU16551 Versatile PC-Card UART
Product Datasheet ES313
1.0 Key Features
• Built-in 512 byte reprogrammable E² for CIS
means true single chip PCMCIA UART
PCMCIA or CF HOST
PCMCIA or CF CARD
HOST
CONTROLER
solution & “live at power-up”
• 5v or 3.3v operation
VPU
• Tiny 64-CBGA package
occupies 36% less PCB
100QFP
OSC
EEPROM
area than 48QFP1 and 77%
less than 100QFP, and is
PCMCIA DECODE
Function
Select
only 1.1mm thick (nom.)
Parallel
• PC-Card 7.1 multi-function compliant device
• Up to 1MBaud operation using x8 baud rate
setting in hardware…no special drivers
mneeded
o• 16 Byte Deep TX and RX FIFOs
• Supports optional external FIFOs for ultra high
.crate streaming2
• For PCMCIA or Compact Flash cards
• 16550 compatible UART function
U• Uses standard drivers from Windows
t4operating systems including CE / PocketPC2
• Ultra-low 3.3v quiescent power (max. 150uA)
• Output for UART activity LED
e• Parallel port mode
• Integrated pull up / down resistors
heThe VPU16551 is a PC-Card UART device that is
designed to operate without any extra glue-logic.
SIt requires just an external crystal, a few passive
components and a suitable transceiver to form a
tacomplete serial port device compatible with
industry standard “COM” ports. It can also
aoperate at up to 1MBaud.
Optionally, the addition of external FIFOs allows
.Dthe UART to add a high-speed parallel data
streaming port, without affecting the UARTs
normal operation. This is perfect for applications
wwwthat require a serial “control” channel and a high
Port
or
External
FIFOs
16550 UART
RS485
TXEnable
Activity LED
Driver
BAUD
x1 / x8
uP OR TRANSCEIVER
Figure 1-1 VPU16551 Block Diagram
rate data channel for throughputs in excess of
4Mbit/sec2.
The VPU16551 is ideally suited to the creation of
PC-Cards or CF cards that require standard
“COM” port type functionality such as wireless
devices or instrumentation products.
The following applications are ideal for the
VPU16551:
• Bluetooth Wireless card
• Classic modem card
• Serial port card
• RF data link card
• GSM / GPRS interface card
• GPS card
• Proprietary interface card
A clear advantage to using the VPU16551 is the
Operating System level compatibility that the
16551 architecture brings. Together with its extra
features, the VPU16551 greatly simplifies PC-Card
/ CF Card design. Unlike competing solutions, the
mVPU16551 does not need extra drivers (for
ostandard operation) and so will “just work” under
.call Windows operating systems2.
t4UA reference kit is available for the VPU16551,
eplease contact sales for further information.
taShe1 64-CBGA Package is 8mm x 8mm. 48QFP requires
approximately a 10mm x 10mm PCB area, 100QFP
arequires 16.5mm x16.5mm.
.D2 EXTERNAL FIFO mode and some enhanced
wfeatures must use Elan’s proprietary driver
Ordering Information
Part Number
VPU16551-CBGAX64
Description
64 ball CBGA, 0-70oC
wwVPU16551 Data Sheet
1 Apr 2005 Rev04
1 page  
Elan Digital Systems Ltd.
www.elandigitalsystems.com
VPU16551 Versatile PC-Card UART
Product Datasheet ES313
2.0 Pinout
VIEW FROM UNDERSIDE
A1 INDEX MARK
“XXX#”=active low PCMCIA signal, “nXXX”=active low VPU signal
Numbers in (brackets) are for PCB tools that cannot handle alpha-numeric pin numbers.
z=PCMCIA/CF I/F z=MULTI FUNC
z=UART
z=VPUPP
z=OSC
VPU16551 Data Sheet
5
Apr 2005 Rev04
5 Page 
Elan Digital Systems Ltd.
www.elandigitalsystems.com
VPU16551 Versatile PC-Card UART
Product Datasheet ES313
16550 mode, the strobe is used to acknowledge each byte of data from the TX FIFO i.e. 16-pulses are required
before the host will write more data to the TX FIFO. When VPUPPRnW is low, nVPUPPCTRL is used as an
active low strobe (data stable on rising edge) to write data into the RBR (FIFO in 16550 mode) so causing the
internal RD signal (latched) to be set high (informing the host that a new RX character is now available). In this
case the pulse should be at least 100ns wide. In 16550 mode the host may choose to only read data after it has
been triggered by the RX FIFO going past its programmed threshold (it could also look at the RD status bit).
In non VPU Parallel Port or in EXTERNAL FIFO mode, this signal should be tied high or left as n/c.
The nVPUPPCTRL line has a built-in 100K pull-up resistor.
SOUT, SIN
Standard 16550 UART serial data out and in signals.
In VPU Parallel Port mode, SIN should be tied low, SOUT should be no connect.
SIN is a Schmitt input with hysteresis to make interfacing to low slew rate signals easier.
TXRDY
This signal shows that there is data being transmitted or waiting to be transmitted. It stays high while the TX
FIFO contains data, and will return low when the last bit of the last byte has been serialised. The signal can be
used in RS485 half duplex mode to enable TX drivers dynamically “on the fly”. No special software support is
needed to use this feature if the TXRDY signal is used as the appropriate tri-state control (TXRDY=’1’ =>
enable drivers). The TXRDY signal will also assert when the BC bit in the LCR is set, ensuring that the break
condition can be sent correctly if required.
For RS232 type applications this signal can be left as no connect.
nDTR, nRTS
Standard 16550 modem control output signals.
nCTS, nDCD, nDSR, nRI
Standard 16550 modem status input signals.
These are all Schmitt input with hysteresis to make interfacing to low slew rate signals easier.
XIN, XOUT
Phase shift crystal oscillator connections with integrated parallel 100K bias resistor. Use an optional 1MOhm
resistor in parallel with a fundamental mode crystal, and load caps appropriate to the crystal used (ensure the
caps are large enough to prevent overtone oscillations over the operating temperature range). The oscillator will
be disabled when the PwrDwn bit in the CSR is set (XOUT = !(XIN AND !PwrDwn)) . XIN can also be driven
from an external oscillator producing a square wave with a 50% duty cycle (+/-10%). R should be selected to
produce stable oscillation whilst filtering edge harmonics to an acceptable level.
The VPU16551 must use a 10MHz or greater crystal for correct UART operation. See section 8.0.
C1 R VPU
Xtal
C2
1M
optional
100K
!PwrDwn
C1, C2 match to crystal per manufactures spec,
R helps reduce clock noise typ 100-200ohms
Crystal Connections
* The VPU can still partly operate in PwrDwn mode…see individual register descriptions for details.
VPU16551 Data Sheet
11
Apr 2005 Rev04
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet VPU16551.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| VPU16551 | Veratile PC Card UART | Elan |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |