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WS9621NLME Schematic ( PDF Datasheet ) - Vimicro

Teilenummer WS9621NLME
Beschreibung Bluetooth Headset IC
Hersteller Vimicro
Logo Vimicro Logo 




Gesamt 19 Seiten
WS9621NLME Datasheet, Funktion
Bluetooth Headset IC - WS9621NLME
Datasheet
Version: V1.4, May 2013
110/F 530 Tower, QingYuan Road, TaiHu International Technology Park,
WuXi New District, 214135, China
Tel: 86-510-81816000
Fax: 86- 510-81816935
Web: www.vimicro.com






WS9621NLME Datasheet, Funktion
PIN CONFIGURATIONS
TOP VIEW
WS9621NLME
VOL2 1
RS
PWR
VOL5
HPOUTN
HPOUTP
VSS
2
3
4
5
6
7
VREF 8
MBIAS 9
MICLP 10
MICLN 11
MICRP 12
48 47 46 45 44 43 42 41 40 39 38 37
36 AVDD_RF
35 RFP
34 RFN
33 VDD_PA
32 GPIO[4]
WS9621NLME
31 GPIO[9]
30 GPIO[8]
29 VDD12
28 AVDD_LPO
27 DVDD_PLL
26 AVDD_PLL
25 VDD33
13 14 15 16 17 18 19 20 21 22 23 24
Figure 2 WS9621NLME Pin Assignment (Not to scale)
PIN DESCRIPTION
[Table 1] Pin Descriptions by Oder
ORDER PIN NAME DIR POWER
DESCRIPTION
1 VOL2
AIO AVDDBAT LDO2 (1.2V) output. Power supply of core of digital logic.
2 RS
AI AVDDBAT Set charging current.
3 PWR
4 VOL5
5 HPOUTN
AI AVDDBAT Power up reset, High level (BAT voltage) means button is turned on
LDO5 (3.3V) output. Power supply for Audio an HP (AVDD33 power
AIO AVDDBAT
domain).
A,O AVDD33 Headphone output, negative end.
6 HPOUTP
A,O AVDD33 Headphone output, positive end.
7 VSS
P AVDD33 Ground for Audio.
8 VREF
AIO AVDD33 Internal reference voltage output.
9 MBIAS
AIO AVDD33 Microphone bias voltage output, tied 2.2uF capacitor to AVSS.
10 MICLP
A,I AVDD33 Microphone left channel input, positive end.
11 MICLN
A,I AVDD33 Microphone left channel input, negative end.
12 MICRP
A,I AVDD33 Microphone right channel input, positive end.
Datasheet (V1.4)
Copyright © Vimicro_wx, Inc. 1999-2013
6

6 Page









WS9621NLME pdf, datenblatt
WS9621NLME
UART External Connection for Bluetooth
The UART in WS9621NLME can be used to transport HCI (Host Controller Interface) packets for Bluetooth. The
HCI UART Transport Layer uses the following settings for RS232:
Baud rate
Number of data bits
Parity bit
Stop bit
Flow control
Flow-off response time
manufacturer-specific
8
no parity
1 stop bit
RTS/CTS (Hardware Flow Control)
manufacturer specific
The RS232 signals should be connected in a null-modem fashion.
The most expensive null modem cable is the null modem cable suitable for full handshaking. In this null modem
cable, seven wires are present. Only the ring indicator RI and carrier detect CD signal are not linked. The cable is
shown in the following figure. DTR and DSR are not used in UART of WS9621NLME.
Figure 6 Null Modem Cable Connections
Connector 1
2
3
4
5
6
7
8
Connector 2
3
2
6
5
4
8
7
Function
Rx Tx
Tx Rx
DTR
DSR
Signal ground
DSR
DTR
RTS
CTS
CTS
RTS
In CTS/RTS flow, the RTS output of device1 signals device2 that device1 is capable of receiving information, so
device2 will send the data out when the RTS signal of device1 is set valid. Also, device1 will send the data out
when the RTS signal of device2 is set valid.
I2C Interface
WS9621NLME provides PROM_SCL and PROM_SDA for communication with EEPROM which comply with I2C
protocol.
I2C is a two-wire, bi-directional serial bus, which provides a simple and efficient method of data exchange between
devices. It is most suitable for applications requiring occasional communication over a short distance between
many devices. The I2C standard is a true multi-master bus including collision detection and arbitration, when two or
more masters attempt to control the bus simultaneously, it will prevent the data corruption.
Datasheet (V1.4)
Copyright © Vimicro_wx, Inc. 1999-2013
12

12 Page





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