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PDF IS1685S Data sheet ( Hoja de datos )
| Número de pieza | IS1685S | |
| Descripción | Noise Reduction Mono Headset IC | |
| Fabricantes | ISSC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IS1685S (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Datasheet
IS1685S
Noise Reduction Mono Headset IC with A2DP streaming
1. General Description
ISSC IS1685S is a compact, high integration, ultra-low cost, CMOS single-chip RF +
baseband IC for Bluetooth v3.0(EDR) (Enhanced Data Rate) 2.4GHz applications. This
chip is fully compliant with Bluetooth specification and completely backward-compatible
with Bluetooth 1.1, 1.2, 2.0 or 2.1 systems.
It incorporates Bluetooth 1M/2M/3Mbps RF, single-cycle 8051, TX/RX modem, memory
controller, task/hopping controller, UART interface, and ISSC Bluetooth software stack to
achieve the required Bluetooth v3.0(EDR) functions.
The IS1685S is designed to support high quality voice application, an audio engine and a
high performance mono CODEC are integrated for this purpose.
The audio engine provides the A-law/μ-law/CVSD encoding/decoding and also the
enhanced noise reduction and echo supression to offer the best voice quality in the both
sending and receiving sides.
In addition, to minimize the external components required for portable devices, a power
manager unit including the Li-ion battery charger, a switching regulator and LDOs are
integrated to reduce BOM cost for various Bluetooth applications.
The device incorporates built-in self-test (BIST) and auto-calibration functions to simplify
production test.
4F, No.8, Dusing Rd., Hsinchu Science Park, Hsinchu city 30078, Taiwan, R.O.C
Phone: 886-3-577-8385
Fax: 886-3-577-8501
Version: 1.0
3/11/2013
1 page  
3. Functional Diagram
Preliminary Datasheet
IS1685S
BT EDR
Transceiver
LED
Adaptor
Clock
PMU
CPU
RAM
ROM
Audio
Engine
Li-ion
Battery
System Power
Key
IO
EEPROM
UART
Audio
Codec
Speaker
Mic
Version: 1.0
-5-
3/11/2013
5 Page 
Preliminary Datasheet
IS1685S
6 Functional Description
6.1 Overall Architecture
The ISSC IS1685S integrates an enhanced EDR Bluetooth RF & BB core, HCI controller,
audio engine and an ENHANCED 8051 processor with an internal mask ROM for program
memory and SRAM for data memory. An innovative interconnection structure called the
Common-Memory Architecture (CMA) is designed to provide a fast and flexible data
movement scheme between the embedded processor, Bluetooth core, and peripheral
hardware.
For audio application and power management, IS1685S has build-in an audio processor,
mono codec and power management unit to reduce the external components.
6.2 Radio Frequency (RF)
6.2.1 Transmitter
The internal PA has a maximum output power of +4dBm with level control 20dB from
amplitude control. This is applied into Class 2/3 radios without external RF PA. For Class1
application, the build-in level control can be used with external PA for power control
requirement.
The transmitter features IQ direct conversion to minimize the frequency drift. And it can
excess 30dB power range with temperature compensation machine.
6.2.2 Receiver
The LNA can be operated into two type modes. One type is TR-combined mode for single
port application. The other type is TR-separated mode for external PA/LNA application.
Version: 1.0
- 11 -
3/11/2013
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet IS1685S.PDF ] | |
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