User's Manual

www.rovingnetworks.com Version 1.1 3/19/13 page 13
Advanced Information
RN52-DS
2.6 Typical Application Schematic
Figure 2-7 shows a typical application circuit with LDO,
stereo audio/microphone PA, USB/UART, AVRCP
switches, and LED0/LED1.
FIGURE 2-7: TYPICAL APPLICATION CIRCUIT FOR A2DP AUDIO STREAMING & AVRCP
REMOTE CONTROL
VBUS
VBUS
RESET
18
3V 3OUT
16
USBDP
14
USBDM
15
GND
17
CBUS2
10
CBUS1
21
VCCIO
1
CBUS3
11
CBUS4
9
CBUS0
22
G
N
D
20
RI
3
DCD
7
DSR
6
DTR
31
CTS
8
RTS
32
RXD
2
TXD
30
VCC
19
OSCI
27
OSCO
28
AGND
2
4
TEST
26
GND
4
THPAD
33
FT232RQ U1
GND
5
D+
3
D-
2
VBUS
1
MTAB
6
USB Mini B / CSR UART J1
1 2 3 4 5 6
J4 SPI MASTER
SPI _MI SO SPI _MOSI SPI _SCK SPI _SS
3.3V
UART_RX UART_TX
UART_CTS UART_RTS
Vin
1
GND
2
Vout
3
Tab
4
TC1262- 3.3V U2
1uF
C6
1uF
C7
VBUS 3.3V
100nF C3 100nF C1
100nF C2
Blue LED
D3
Red LED
D2
S2
Vol Down
S3
Play / Pause
S6
Next
S1
Prev
S4
Vol Up
BTN_VOL UP BTN_VOL DOWN BTN_NEXT BTN_PL AY BTN_PREVI OUS
47R
R8
470
R9
3.3V
GND
5
D+
3
D-
2
VBUS
1
MTAB
6
USB Mini B / RSVD USB J2
GPIO4
5
GPIO5
6
GPIO12
7
GPIO13
8
GPIO11
9
GPIO10
10
GPIO9
11
USBD-
12
USBD+
13
UART_RTS
14
UART_CTS
15
UART_TX
16
PCM _CLK
26
SPI _SS
28
SPI_MISO
29
SPI_SCK
30
PCM _IN
23
VDD
22
L ED0
33
MIC_BIAS
34
MIC_L+
35
MIC_R+
36
MIC_L-
37
MIC_R-
38
PCM _OUT
24
GPIO7
19
PCM _SY NC
25
SPI_MOSI
31
L ED1
32
PWREN
21
GPIO6
20
UART_RX
17
AIO0
4
GPIO2
3
AGND
39
SPKR_R-
40
GND
1
GND
18
GND
27
GND
44
GPIO3
2
SPKR_L-
41
GND
50
GND
49
GND
48
GND
47
GND
46
GND
45
SPKR_R+
42
SPKR_L +
43
M1 RN52 Module
PI O7 PI O6
L ED0 L ED1
L ED0 L ED1
VBUS
USBD- USBD+
SPI _MI SO SPI _MOSI SPI _SCK SPI _SS
3.3V
SPKR_R- SPKR_L - SPKR_R+ SPKR_L +
S5
Wake
3.3V
PCM_CL K PCM_SYNC PCM_OUT PCM_IN
SPKR_R- SPKR_L - SPKR_R+ SPKR_L +
VBUS
47k R2
22k R1
PI O3
1uF C21
1uF
C22
1uF
C13
1uF
C14
1uF
C12
2k2 R7
2k2
R6
47nF C8 47nF C10
47nF
C11
47nF
C9
MI C_L
MI C_R
1uF C18
22k
R17 22k R15 47k R11 22k R13
47k
R14 47k R10
47k R16 22k R12
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
J3 EXT Connector
PCM_CL K PCM_SYNC PCM_OUT PCM_I N
3.3V
IN1+
3
IN1-
2
Vo2
9
BYPASS
4
IN2-
8
IN2+
7
SHUTDOWN
6
GND
5
VDD
10
Vo1
1
PAD
11
U4 TPA6112
100uF C23 100uF C20 100uF C17 100uF C19
10uF C15
100nF C16
MBR120 D1
10nF C4
VBUS
PI O9
3.3V
BTN_VOLDOWN BTN_PREVI OUS BTN_PLAY BTN_NEXT BTN_VOLUP
PI O2
PI O6 PI O7
1 2
J8 MI CL
1 2
J6 MI CR
MI C_L MI C_R
1 2
J11 Battery
VBUS
1 2 3 4 5 6 7 8 9 10 11 12
J10
1 2 3 4 5 6 7 8 9 10
J7
PI O4
PWREN
PWREN
SPKR_R- SPKR_L - SPKR_R+ SPKR_L +
MI C_BIAS MI C_L + MI C_R+ MI C_L - MI C_R-
MI C_L + MI C_R+ MI C_L - MI C_R-
MI C_BI AS
AI O0
UART_RX UART_TX UART_CTS UART_RTS USBD- USBD+ BTN_VOL UP BTN_VOL DOWN BTN_NEXT BTN_PLAY BTN_PREVI OUS PI O3 PI O9 PI O2 PI O4 AI O0
MI C_L + MI C_R+ MI C_L - MI C_R-
MI C_BI AS
3 5 4 2 1
J5
Mic
3 5 4 2 1
J9 Headphones
2k2R70
UART_RX UART_TX
Device
Firmware
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