參數(shù)資料
型號(hào)： LMX9820
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)： 5/40頁(yè)
文件大?。?/td> 567K
代理商： LMX9820
Revision 1.0
5
www.national.com
L
5.0 Pad Descriptions
Table 2. System Interface Signals
Pad Name
Pad
Location
Direction
Description
Clk-
B8
Input
Xtal g or Negative Clock Input.
Typically connected along with
XTAL_D to an external surface mount AT cut crystal. Can also be con-
figured as a frequency input when using an external crystal oscillator.
When configured as a frequency input, typically connected to Ground
with a 10 pF capacitor.
Clk+
B9
Input
Xtal d or Positive Clock Input.
Typically connected along with
XTAL_G to an external surface mount AT cut crystal. Can also be con-
figured as a frequency input when using an external crystal oscillator.
When configured as a frequency input, is typically connected to an ex-
ternal Temperature Compensated Crystal Oscillator (TCXO) through
an Alternating Current (AC) coupling capacitor.
32kHz_CLKI
B13
Input
32 kHz Clock input.
Not supported. Place pad and do not connect to
VCC or Ground.
32kHz_CLKO
C13
Output
32 kHz Clock Output.
Not supported. Place pad and do not connect to
VCC or Ground.
RF_inout
H8
Input/Output
RF Antenna Port.
50
nominal impedance. Typically connected to an
antenna through a 6.8pF capacitor.
ISEL2
H13
Input
Module Interface Select Input Bit 1.
ISEL1
J13
Input
Module Interface Select Input Bit 0.
Table 3. USB Interface Signals (Not supported by lmx9820 firmware)
Pad Name
Pad
Location
Direction
Description
USB_VCC
F12
Input
USB Transceiver Power Supply +
1
USB_D+
E11
Input/Output
USB Data Positive
1
USB_D-
E12
Input/Output
USB Data Negative
1
USB_Gnd
G12
Input
USB Transceiver Ground
1
1.
Treat as No Connect, Pad required for mechanical stability.
Table 4. UART Interface Signals
Pad Name
Pad
Location
Direction
Description
Uart_tx
D9
Output
UART Host Control Interface Transport, Transmit Data.
Uart_rx
C9
Input
UART Host Control Interface Transport, Receive Data.
Uart_rts#
C10
Output
UART Host Control Interface Transport, Request to Send.
Uart_cts#
D10
Input
UART Host Control Interface Transport, Clear to Send.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LMX9820A 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Bluetooth Serial Port Module
LMX9820ADEV 制造商:Texas Instruments 功能描述:KIT DEV FOR LMX9820
LMX9820ADONGLE/NOPB 制造商:Texas Instruments 功能描述:KIT REF DESIGN FOR LMX9820
LMX9820ASM 制造商:Texas Instruments 功能描述:BLUETOOTH MODULE, SMD, 9820, FR4129
LMX9820ASM/NOPB 制造商:Texas Instruments 功能描述:IC MODULE BLUETOOTH 116-LTCC
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