Dec, 2004
2004 Jaalaa, Inc.
Proprietary and Confidential
JA3515 Transceiver
Wireless Controller IC
Overview
The JA3515 is a low-cost, highly
integrated, tri-band, system-on-chip
targeted for wireless keyboard and mouse
applications. The JA3515 can be used as
a complete, high performance PC
transceiver interface for a wireless
keyboard and mouse, using minimum
external components. All necessary
functions, the RF transceiver, baseband,
modem, control logic and I/O interfaces;
both USB and PS2 are on-chip. The
protocol stack and application software are
integrated in the built-in mask ROM.
The wireless data link runs with very low
latency at data rates up to 64 kbps. The
system incorporates a proprietary media
access control protocol (MAC) that
provides highly reliable wireless data
transfers even in an environment with other
wireless users.
Features
Tri-band, 27 MHz, 40 MHz and 49 MHz
single-chip radio
World-wide unlicensed RF bands
Reliable, bi-directional data link
GFSK modulation
64 kbps max data rate
Robust Interference Avoidance
Viterbi decoder
High tolerant frequency compensation
8051 micro-controller
JTAG interface
4-kByte SRAM
Application integrated in 24-kByte ROM
16 programmable GPIO's
Internal regulators
I
2
C, UART serial Interface
USB & PS/2 interface
27/40/
49MHz
Radio
CPU
4K
RAM
I/O
GPIO
USB
I
2
C
MODEM
Antenna
24K
ROM
JA3515
UART
PS/2
USB
PS/2
JA3515 System Diagram
7 mm
7 mm
Dec, 2004
2004 Jaalaa, Inc.
Proprietary and Confidential
Technical Specifications:
Min Typ. Max
unit
Operating Temperature
-20 +25 +85
C
Operating Voltage
2.0 - 3.2
V
Frequency (Band 1)
26.995 - 27.255
MHz
(Band 2)
40.680
MHz
(Band 3)
49.840 49.880
MHz
Output Power (Peak)
13.0 15.0 17.0
dBm
Output Power Control
3
steps
Receive Sensitivity @ 1% PER
-105
dBm
Modulation/Demodulation
GFSK
Power Consumption
Continuous Transmit Mode
20
mA
Continuous Receive Mode
25
mA
Sleep Mode
12
uA
Multi-channels
15
Data Rate
64
kbps
Applications:
For more information please contact:
JAALAA, Inc.
(Tel) 858-824-6307
E-mail:
info@jaalaa.com
Website:
www.jaalaa.com
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