參數(shù)資料
型號(hào): LMX9820A
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
文件頁數(shù): 23/44頁
文件大?。?/td> 579K
代理商: LMX9820A
Revision 1.0
23
www.national.com
L
9.0 System Power-Up Sequence
(Continued)
9.0 System Power-Up Sequence
The following sequence must be performed to correctly
power-up the LMX9820A:
1. Apply IOVCC and VCC to the LMX9820A.
2. Reset_b# and Reset_5100# of the LMX9820A are driven
high a minimum of 2 ms after the LMX9820A voltage
rails are high. The LMX9820A is the properly reset.
See Table 25 on page 23.
Figure 15. LMX9820A System Power-Up Sequence Timing
Reset_b#
Reset_5100
BBP_CLOCK
CCB_DATA
Standby
Active
TX_RX_DATA
TX_RX_SYNC
High
VCC
LMX9820A in
Power-Up Mode
LMX9820A in Normal Mode
Low
CCB_CLOCK
CCB_LATCH
High
Low
Low
Low
LMX9820A
Oscillator
Start-Up
LMX9820A
Initialization
LMX9820A
Initialization
IOVCC
t
PTOR
Low
Table 25. LMX9820A System Power-up Sequence Timing
Symbol
Parameter
Condition
Min
Typ
Max
Unit
t
PTOR
Power to Reset
V
CC
and IO
VCC
at operating
voltage level to valid reset
2
ms
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