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PDF SH1201 Data sheet ( Hoja de datos )
| Número de pieza | SH1201 | |
| Descripción | Force Stick Encoder | |
| Fabricantes | Semtech Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SH1201 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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PixiPoint® SH1201
Advanced “Click-to-Select”
No-Drift™ Force Stick Encoder
HID & SYSTEM MANAGEMENT PRODUCTS, MOUSECODER® FAMILY
DESCRIPTION
The PixiPoint® SH1201 mouse
encoder is a cost-effective, high-
functionality IC that interfaces a
force-stick sensor to a PS/2 or
serial port. Ideal for laptop or
palmtop use, the low-power
PixiPoint® uses an advanced
www.DataSheeatl4gUo.criotmhm for enhanced motion
control. The IC can be configured
as a standard 3-button mouse or
as a wheel mouse. The IC
provides an extra port for hot-plug
connection of an external PS/2
mouse, including one with wheel
function. The embedded sensor
and the external device can
operate concurrently.
The PixiPoint® includes a signal
conditioning circuit for a low cost,
simple and real estate-saving
implementation. Just a few low-
tolerance external components are
needed.
Typically consuming less than
4.5 mA, the PixiPoint® is ideal for
battery-operated systems.
FEATURES
• Advanced motion control algorithm
provides accurate cursor control
• Can be configured for PS/2 or
RS232 serial communication with
the host
• Can be configured as a standard
3-button mouse or a wheel mouse
• Complies with the Microsoft® Plug
and Play External COM Device
specification
• Click (select), double-click
(execute), and slow drag are
implemented in the IC – no special
driver support is required
• Provides built-in profiles to
interface popular force-stick
sensors from several
manufacturers
• Supports hot-plug connection of a
standard external PS/2 mouse,
with or without wheel function
• Works with standard Windows®
mouse drivers
• Works with most IBM force stick
drivers
• CleanStop™ feature means cursor
stops where it should
• In PS/2 mode, supports all
standard PS/2 commands
• Royalty-free and cost-effective
• Low power consumption:
4.5 mA (typical)
• 2.7 V–5.5 V operation over
extended temperature range
APPLICATIONS
• Notebooks/laptops
• Handhelds
• Keyboards
• Instrumentation
PIN ASSIGNMENTS
PS/2 communication is
bidirectional at 10 Kbps. The
PixiPoint® returns up to 100 mouse
reports per second, and is
compatible with the standard two-
button mouse protocol, the
standard three-button mouse
protocol, and the standard wheel
mouse protocols. It implements all
commands from and to the system
(as defined in the IBM PS/2 mouse
communication protocol).
The PixiPoint® also implements
most of the IBM force stick
extended commands, and works
with most IBM force stick drivers.
32
XP
YM
XM
YP
VREF
_RESET
VSS2
VDD
1
8
9
25
24
_MB/_UB
_LB
_DB
FDA
CDA
XYGSEL
MDAT/RTS
EMCLK
17
16
Semtech, the Semtech logo, PixiPoint, PixiCoder,
MouseCoder, CleanStop, EasyDrag, No-Drift, and
MicroBuddy are marks of Semtech Corporation.
All other marks belong to their respective owners.
Copyright ©1999-2003 Semtech Corporation
SH1201 data sheet v1.12 (2003-04)
1
www.semtech.com
1 page  
SERIAL HARDWARE
The TxD and RTS lines are CMOS
logic-level signals, suitable for
direct connection to the pins of an
UART. Interfacing via the RS-232
port requires an addition of an
inverting driver and receiver. A
simple one-transistor inverting
driver and receiver can be used.
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SERIAL COMMUNICATION
Communication through the serial port is uni-directional at a fixed speed of
1200 Baud, 7N1 protocol (7 data bits, 1 stop bit, no parity check).
The host can reset the device at any time by setting the RTS line high.
When RTS is set low after a delay of at least 100 ms, the PixiPoint®
responds in one of two ways as shown below. Its response depends on its
mode: wheel mode or 3-button mode, as determined by the state of the
down button pin (DB, pin 22).
Wheel mode
When the PixiPoint® is in wheel mode, and RTS is set low after a delay of
at least 100 ms, the PixiPoint® responds with the two identification
characters “MZ” (0x4D, 0x5A); they are followed by a zero motion report
consisting of the four bytes 0x40, 0x00, 0x00, 0x00, and then by the plug-
and-play string:
vvSTH1201\\MOUSE\PNP0F0A\PIXIPOINTcc
This plug-and-play string is a sequence of ASCII characters with their
codes reduced by 0x20. Note that vv represents a 2-byte version number,
and cc is a 2-byte checksum. For further information, please refer to the
Plug and Play External COM Device Specification, available from Microsoft.
See the following web page (subject to change):
http://www.microsoft.com/hwdev/resources/specs/pnpcom.asp
3-button mode
When the PixiPoint® is in 3-button mode, and RTS is set low after a delay
of at least 100 ms, the PixiPoint® responds with the two identification
characters “M3” (0x4D, 0x33); they are followed by a zero motion report
consisting of the four bytes 0x40, 0x00, 0x00, 0x00, and then by the plug-
and-play string:
vvSTH1201\\MOUSE\PNP0F0A\PIXIPOINTcc
This plug-and-play string is a sequence of ASCII characters with their
codes reduced by 0x20. Note that vv represents a 2-byte version number,
and cc is a 2-byte checksum. For further information, please refer to the
Plug and Play External COM Device Specification, available from Microsoft.
See the following web page (subject to change):
http://www.microsoft.com/hwdev/resources/specs/pnpcom.asp
Copyright ©1999-2003 Semtech Corporation
SH1201 data sheet v1.12 (2003-04)
5
www.semtech.com
5 Page 
LOW-SPEED PS/2 MODE SCHEMATIC FOR THE PIXIPOINT® SH1201-FG
www.DataSheet4U.com
25
1 XP
2 YM
3 XM
4 YP
5 VREF
6 RESET
7 VSS2
8 VDD
32
MB / UB
LB
DB
FDA
CDA
XYGSEL
MDAT
EMCLK
24
23
22
21
20
19
18
17
1
2
Copyright ©1999-2003 Semtech Corporation
SH1201 data sheet v1.12 (2003-04)
11
Note: This design is for
3.3 V Vcc with ±0.3 V noise
www.semtech.com
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet SH1201.PDF ] | |
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