參數(shù)資料
型號(hào)： LMX9838SB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Bluetooth Serial Port Module
中文描述： SPECIALTY TELECOM CIRCUIT, PBGA70
封裝： 10 X 17 MM, 2 MM HEIGHT, LGA-70
文件頁數(shù)： 19/26頁
文件大小： 974K
代理商： LMX9838SB
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
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LMX9838SB/NOPB 功能描述:藍(lán)牙/802.15.1 模塊 RoHS:否 制造商:Murata Wireless Solutions 類: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: 接口類型:PCM, UART 天線連接器類型:Chip 最大工作溫度:+ 85 C 尺寸:17.5 mm x 16 mm x 2 mm
LMX9838SBX 制造商:Texas Instruments 功能描述:Bluetooth Class II 3.3V 0.704Mbps 70-Pin LTCC T/R
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