CSR8615A04-IQQF-R View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'CSR8615A04-IQQF-R' PDF : 114 Pages View PDF
12 Example Application Schematic
VBAT VBUS
VBAT
3V3_USB
1V8_SMPS
1V35_SMPS
1V8_SMPS
3 S1
1 MFB
C2
2u2
0 C1
2 2u2
C3
2u2
L1
C4
C5
4u7 2u2
10n
C6
L2
C7
10n
4u7 4u7
C8
C9
15p
2u2
C10
470n
C11
100n
tember 16, CHARGER
ep BYPASS REG
ay, S 50R
i
d ANT
U2
2 OUT
IN 4
Mon Bluetooth RF
3 GND GND 1
2.45GHz
50R
i
BT_RF
12 BT_RF
VBAT
1V8 SMPS
1V35 SMPS
3V3
AUX LDO 1V35
ANA LDO 1V35
1V35
PCB Layout Notes CSR8615.cQn F- N Ensure the following components are placed next to CSR8615 QFN
m and have good low impedance connections both to signal and GND
o C2 and C3
.c Ensure the following tracks have good low impedance connections
(no via share and short thick tracks)
m VSS_SMPS_1V8 to Battery Ground
m VSS_SMPS_1V35 to Battery Ground
o LX_1V8 to Inductor
c LX_1V35 to Inductor
he L1 to C4 track
c L2 to C7 track
a C4 to VSS_SMPS_1V8
p C7 to VSS_SMPS_1V35
a VBAT to Battery and C2 - should be <1ohm from battery
- VCHG to charger connector and C1
o VDD_DIG to Ground
sa Ensure good low impedance ground return path through GND plane for SMPSU
T current from C4 to VSS_SMPS_1V8 and C7 to VSS_SMPS_1V35 back to C3 & C4
s Ensure routing from L2 to pin 39 and from L2 to C8/9 & pins 11 & 13 are kept separate
e CSR recommend low Rdc inductors (<0.5R) for L1 & L2 for optimum power efficiency
m For example Taiyo Yuden CB2012T4R7M
ja Suggest analogue and digital grounds are separated if possible
for and star connected near VSS_AUDIO as shown
Ensure analogue tracks stay over Analogue ground as much as possible
SP100
STAR
MIC BIAS
Mic 1
Microphone Input
C12
2u2
C13
100n
C14
100n
MIC_1 L4
15nH
R1
2k2
C17
15p
Optional Ancilliary Circuits Prepared Optional Fast charge
USB / Charger Interface
Lithium Polymer Battery
Battery temperature sensor
1V35_SMPS R100
VBAT VBUS
Typical LED's and Buttons
XTAL_IN 19
DIG LDO
XTAL_OUT 18
PIO[29] / LED[0]
PIO[30] / LED[1]
PIO[31] / LED[2]
37
36
66
PIO[0] / UART_RX
PIO[1] / UART_TX
PIO[6]
PIO[7]
PIO[8] / UART_RTS#
PIO[9] / UART_CTS#
PIO[18]
PIO[21]
59
60
62
57
61
58
65
64
PIO[2] / PCM1_IN / SPI_MOSI
PIO[3] / PCM1_OUT / SPI_MISO
PIO[4] / PCM1_SYNC / SPI_CS#
PIO[5] / PCM1_CLK / SPI_CLK
30
28
24
34
SPI_PCM# 29
PIO[12] / QSPI_FLASH_CS# / I2C_WP
PIO[10] / QSPI_FLASH_CLK / I2C_SCL
PIO[11] / QSPI_IO[0] / I2C_SDA
PIO[13] / QSPI_IO[1]
22
25
26
31
PIO[14] / UART_RX
PIO[15] / UART_TX
PIO[16] / UART_RTS#
PIO[17] / UART_CTS#
23
21
27
32
AIO[0] 20
USB_P
USB_N
56
55
RST# 35
Left
Speaker (16-32 Ohm)
Optional I2C EEPROM memory
XT1
26MHz
LED_0
LED_1
LED_2
PIO_0
PIO_1
PIO_6
PIO_7
PIO_8
PIO_9
PIO_18
PIO_21
PIO_2
PIO_3
PIO_4
PIO_5
SPI_PCM#
PIO_12
PIO_10
PIO_11
PIO_13
PIO_14
PIO_15
PIO_16
PIO_17
AIO_0
USB_P
USB_N
RSTB
LED outputs
PIO / UART
PIO / PCM1 / Debug SPI / I2S
SPI/PCM# high for SPI. Low for all other functions
PIO / Serial Flash / I2C
PIO / UART
Analogue Input / Output
USB (12Mbps)
Reset
Optional 1x SPI FLASH memory
400mohm = 500mA
(battery protection built in)
9k1
AIO_0
D100
1V8_SMPS C100
1V8_SMPS
BAT54C
VBUS
CHG_EXT 1
VBAT_SENSE
VBAT
Q100
BCX51
R104
1%
400mR
C105
4u7
R108
220mR
CON100
USB MINI-B
VBUS
D-
D+
ID
GND
1
2
3
4
5
VBUS
USB_N
USB_P
VBAT
Li+ CELL
CON101
3.7V
PIO_n
THERM
10k
D Q1
G
S
C102
10n
1V8
1V8
1V8
1V8
1V8
D101 D102 D103
R101
220R
R102
330R
R103
330R
S100
F4
S101
F3
S102
F2
S103 S104
VOL+ VOL-
R105 R106 R107
2k2 2k2 2k2
PIO_12
PIO_10
PIO_11
U101
8
7
6
5
VCC
WP
SCL
SDA
10n
A0
A1
A2
VSS
1
2
3
4
24AAxxx
Size of EEPROM depends on voice prompt requirements
C101
10n
PIO_11
PIO_13
1V8_SMPS
U100
8 VDD
5
2
3
7
SI/SIO0 CE
SO/SIO1 SCK
WP/SIO2
HOLD/SIO3
VSS
1
6
4
SPI Flash
PIO_12
PIO_10
Connect VBAT_SENSE to VBAT
if not using this circuit
Pre-production Information
© Cambridge Silicon Radio Limited 2013
Confidential Information - This Material is Subject to CSR's Non-disclosure Agreement
Figure 12.1: Single Microphone
Page 74 of 114
CS-303726-DSP3
www.csr.com
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