參數(shù)資料
型號(hào)： LMX9838
廠商： National Semiconductor Corporation
英文描述： Bluetooth Serial Port Module
中文描述： 藍(lán)牙串行端口模塊
文件頁(yè)數(shù)： 19/26頁(yè)
文件大?。?/td> 974K
代理商： LMX9838
Command
Event
Description
Read NVS
Write NVS
Read NVS Confirm
Write NVS Confirm
Read from the NVS (EEPROM)
Write to the NVS (EEPROM)
TABLE 29. Initialization Commands
Command
Event
Description
Set Clock and Baudrate
Enter Bluetooth Mode
Set Clock and Baudrate
Set Clock and Baudrate Confirm
Enter Bluetooth Mode Confirm
Set Clock and Baudrate Confirm
Write Baseband frequency and Baudrate used
Request SimplyBlue module to enter BT mode
Write Baseband frequency and Baudrate used
TABLE 30. GPIO Control Commands
Command
Event
Description
Set GPIO WPU
Get GPIO Input State
Set GPIO Direction
Set GPIO Output High
Set GPIO Output Low
Set GPIO WPU Confirm
Get GPIO Input States Confirm
Set GPIO Direction Confirm
Set GPIO Output High Confirm
Set GPIO Output Low Confirm
Enable/Disable weak pull up resistor on GPIOs
Read the status of the GPIOs
Set the GPIOs direction (Input, Ouput)
Set GPIOs Output to logical High
Set GPIOs Output to logical Low
16.0 Application Notes
The different possibilities to power supply the LMX9838 de-
pend on the IO interface logic level.
Figure 8
represents an example of system functional
schematic for the LMX9838 using a 3.0V to 3.3V IO interface.
Figure 9
represents an example of system functional
schematic for the LMX9838 using a 2.5V to 3.0V IO interface.
Figure 10
represents an example of system functional
schematic for the LMX9838 using a 1.8V to 2.5V IO interface.
Figure 11
represents an example of system functional
schematic for the LMX9838 using a 1.8V IO interface.
16.1 FILTERED POWER SUPPLY
It is important to provide the LMX9838 with adequate ground
planes and a filtered power supply. It is highly recommended
that a 2.2
μ
F and a 100 nF bypass capacitor be placed as
close as possible to the power supply pins V
CC
, MV
CC
, and
V
CC
_IO.
16.2 FREQUENCY AND BAUDRATE SELECTION
OP3, OP4, OP5 can be strapped to the host logic 0 and 1
levels to set the host interface boot-up configuration. Alterna-
tively all OP3, OP4, OP5 can be hardwired over 1k Ohm
pullup/pulldown resistors. See
Table 10
.
30027908
Notes:
Capacitor values C1 and C2 may vary depending on design and crystal manufacturer specification.
FIGURE 8. 3.0V to 3.3V Example Functional System Schematic
19
www.national.com
L
相關(guān)PDF資料
PDF描述
LMX9838SB Bluetooth Serial Port Module
LMX9838SBX Bluetooth Serial Port Module
LNBEH21 LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND IC INTERFACE
LNBEH21PD LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND IC INTERFACE
LNBEH21PD-TR LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND IC INTERFACE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LMX9838_0709 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Bluetooth㈢ Serial Port Module
LMX9838DONGLE 功能描述:藍(lán)牙/802.15.1 模塊 RoHS:否 制造商:Murata Wireless Solutions 類(lèi):1 頻帶:2402 MHz to 2480 MHz 靈敏度:- 92 dBm 數(shù)據(jù)速率: 工作電源電壓:2.2 V to 3.3 V 輸出功率: 接口類(lèi)型:PCM, UART 天線連接器類(lèi)型:Chip 最大工作溫度:+ 85 C 尺寸:17.5 mm x 16 mm x 2 mm
LMX9838DONGLE/NOPB 功能描述:藍(lán)牙/802.15.1 模塊 RoHS:否 制造商:Murata Wireless Solutions 類(lèi):1 頻帶:2402 MHz to 2480 MHz 靈敏度:- 92 dBm 數(shù)據(jù)速率: 工作電源電壓:2.2 V to 3.3 V 輸出功率: 接口類(lèi)型:PCM, UART 天線連接器類(lèi)型:Chip 最大工作溫度:+ 85 C 尺寸:17.5 mm x 16 mm x 2 mm
LMX9838SB 制造商:Texas Instruments 功能描述:Bluetooth Class II 3.3V 0.704Mbps 70-Pin LTCC Tray
LMX9838SB/NOPB 功能描述:藍(lán)牙/802.15.1 模塊 RoHS:否 制造商:Murata Wireless Solutions 類(lèi):1 頻帶:2402 MHz to 2480 MHz 靈敏度:- 92 dBm 數(shù)據(jù)速率: 工作電源電壓:2.2 V to 3.3 V 輸出功率: 接口類(lèi)型:PCM, UART 天線連接器類(lèi)型:Chip 最大工作溫度:+ 85 C 尺寸:17.5 mm x 16 mm x 2 mm
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