LMX9838SB Datasheet, PDF (27/38 Pages) Texas Instruments – Bluetooth Serial Port Module

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LMX9838
SNOSAZ9D – JULY 2007 – REVISED APRIL 2013
1.8V
1.8V
2.2 PF 100 nF
100 nF
2.2 PF
10
9
11
VCC VCC_CORE VCC_IO
3.0V+
6
MVCC
2.2 PF
100 nF
Optional 32 kHz
If not used
-32k+ = GND
-32k- = NC
C2
Y1
32.768 kHz
Advanced Audio Interface
Connect to PCM codec
or leave open
27
32k+
28
32k-
C1
LMX9838
23
SRD
22 _STD
21 _SFS
20
SCLK
For No Connects
Reference Table 5
All Common
GROUND
Reference
Table 5
RXD ¹²
TXD ¹³
14
RTS
15
CTS
2
RESET#
UART System Bus
Connected to Host
Reset line connected to host
VCC_IO
1k 1k
OP3 ¹⁶
OP4 ²⁶
OP5 ²⁵
1k
Frequency Baud
Rate selector
Settings shown for
921600 BPS
For other baudrates
reference Table 7
NC
Notes:
Capacitor values C1 and C2 may vary depending on design and crystal manufacturer specification.
MVCC can be connected to 3.0V and above in this configuration. Please see Recommended Operating Conditions.
Figure 13. 1.8V Example Functional System Schematic
Copyright © 2007–2013, Texas Instruments Incorporated
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