CPI CPI-WAM002 Series User manual

Manual for CPI-WAM002/XX-X
1. Description
CPI’s CPI-WAM002/XX-X audio module is a cost-effective and low-power solution optimized for
wireless transmission of high-quality digital audio. We use TI’s CC8520/CC8530 IC (Digital I2S I/O) and
CC8521/CC8531 (USB full speed I/O) IC which includes a robust built-in wireless audio transmission
protocol and can control selected external audio devices.
The wireless range is up to 100 meters line of sight with an external PA (TI CC2590). Utilizing
numerous coexistence mechanisms allows CPI-WAM002/XX-X to avoid interfering with, or being
interfered by other 2.4GHz radio systems. Therefore, CPI-WAM002/XX-X has excellent anti-WiFi
performance. CPI-WAM002/XX-X operates autonomously, and can be used with or without an external
MCU. An external host processor can be connected through SPI and control some aspects of its
operation.
Combined with the easy-to-use configuration tool and application reference designs,
CPI-WAM002/XX-XX wireless audio module ensures flexibility, cost-efficiency and a fast
time-to-market.
2. Features
Solution：TI CC8520/CC8530(Digital I2S I/O); TI CC8521/CC8531(USB 1.1 I/O)
Wireless range up to 100 meters line of sight with an external PA (TI CC2590)
Excellent Anti-WiFi Performance
Uncompressed stereo CD audio quality
Can be used autonomously, or being controlled by an external host MCU
Seamless connection and control of selected TI audio codecs, DACs/ADCs
Model No.: CPI-WAM002/XX-X
Frequency Range: 2.4GHz –2.483GHz
Solution: TI CC8520/CC8530 (Digital I2S I/O); TI CC8521/CC8531 (USB full speed I/O)
RF Channel No.: up to 18 channels
Modulation: 8GFSK (frequency hopping)
Data Rate: up to 5Mbps
Distance: up to 100 meters line of sight
Audio Channel No.: up to 2 channels
Software or Drivers: 2.0V ~ 3.6V
Operating Temperature: -40℃~ +85℃
Audio Sample Rate: up to 48kHz / 16bits (Uncompressed)
Transmitter Output Power: 11dBm
Receiver Sensitivity: -87dBm
Dimension (L x W): 34 x 14.7mm

3. Applications
Wireless speakers.
Home theater rear speakers.
Wireless audio sender for MP3 / CD / DVD player.
USB and PC wireless audio
TV/Set-top box wireless audio
Music instrument
4. Block Diagram
Note: I2C must be connected to external pull-up resister 2.7KΩ. VBAT has internal resister 100K
Ωon Module.

5. Pin Assignment & Definition

4
Name Pin function Description
GND Ground The exposed die attach pad must be connected to a solid
ground plane underneath the chip
VCC Power 2.0-3.6V analog power supply connection
VBAT Analog input Battery voltage supervisor (threshold level programmable by
external resistor to positive battery terminal)
SCL
GIO10 Digital I/O1I2C master clock line. Must be connected to external pull-up
General-purpose digital I/O pin 10
SDA
GIO11 Digital I/O1I2C master clock line. Must be connected to external pull-up
General-purpose digital I/O pin 11
GIO12 Digital I/O1General-purpose digital I/O pin 12
GIO13 Digital I/O1General-purpose digital I/O pin 13
PAEN Digital I/O2Control external PA
EN Digital I/O2Control external LNA
XANTN
USBN Digital I/O1CC85x0: DO NOT CONNECT (Future FW: Controlling
external antenna switch) CC85x1: USB D- data line
XANTP
USBP Digital I/O1CC85x0: DO NOT CONNECT (Future FW: Controlling
external antenna switch) CC85x1: USB D+ data line
CSN Digital Input
(pull-up) Serial SPI configuration interface, active low chip select
SCLK Digital I/O1Serial SPI configuration interface, clock input/output
MOSI Digital I/O1Serial SPI configuration interface, master data output, slave
data input
MISO Digital I/O1Serial SPI configuration interface, master data input, slave
data output
GIO1 Digital I/O1General-purpose digital I/O pin 1
Configurable with PurePath™ Wireless Configurator
GIO2 Digital I/O1General-purpose digital I/O pin 2
GIO3 Digital I/O2General-purpose digital I/O pin 3
Configurable with PurePath™ Wireless Configurator
RSTN Digital Input
(pull-up) Active-low device reset
MCLK
GIO4 Digital I/O1Master clock output for external audio devices
General-purpose digital I/O pin 4
BCLK
GIO5 Digital I/O1I2S/DSP audio interface bit clock (in/out)
General-purpose digital I/O pin 5
Pin Assignment

5
Name Pin function Description
WCLK
GIO6 Digital I/O1I2S/DSP audio interface word clock (in/out)
General-purpose digital I/O pin 6
AD0
GIO7 Digital I/O1I2S/DSP audio interface data line 0 (in/out)
General-purpose digital I/O pin 7
AD1
GIO8 Digital I/O1I2S/DSP audio interface data line 1 (in/out)
General-purpose digital I/O pin 8
AD2
GIO9 Digital I/O2I2S/DSP audio interface data line 2 (in/out)
Configurable with PurePath™ Wireless Configurator
1Digital I/O pad with 4 mA source/sink capability.
2Digital I/O pad with 20 mA source/sink capability.
6. Regulatory Notices:
Federal Communication Commission Interference Statement:
This device complies with part 15 of the FCC rules. Operation is subject to the following
two conditions
(1) This device may not cause harmful interference and
(2) This device must accept any interference received, including interference that may
cause undesired operation
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation.This
equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: To assure continued compliance, any changes or modifications not expressly
approved by the party responsible for compliance could void the user's authority to operate
this equipment. (Example - use only shielded interface cables when connecting to computer
or peripheral devices).

IMPORTANT NOTE: FCC Radiation Exposure Statement:
To comply with FCC RF exposure compliance requirements, the antenna used for this transmitter
must be installed to provide a separation distance of at least 20 centimeter from all persons and must
not be co-located or operating in conjunction with any other antenna or transmitter.”
End Product Labeling
This transmitter module is authorized only for use in devices where the antenna may be installed
such that 20 centimeter may be maintained between the antenna and users. The final end product must
be labeled in visible area with the following: “Contains FCC ID: 2AHD2WAM002”
This device is intended only for OEM integrators under the following
conditions:
The CPI-WAM002/XX-X may transmit simultaneously with other collocated radio transmitters within a
host device, provided the following conditions are met:
1 Each collocated radio transmitter has been certified by FCC for mobile application.
2 At least 20 cm separation distance between the antennas of the collocated transmitters and the
user’s body must be maintained at all times.
As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM
integrator is still responsible for testing their end-product for any additional compliance requirements
required with this module installed.
IMPORTANT NOTE: In the event that these conditions cannot be met (for example co-location with
another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot
be used on the final product. In these circumstances, the OEM integrator will be responsible for
reevaluating the end product (including the transmitter) and obtaining a separate FCC authorization. As
long as a condition above is met, further transmitter test will not be required. However, the OEM
integrator is still responsible for testing their end product for any additional compliance requirements
required with this module installed (for example, digital device emissions, PC peripheral requirements,
etc.)
Manual Information to the End user
The OEM integrator has to be aware not to provide information to the end user regarding how to
install or remove this RF module in the user’s manual of the end product which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.
Antenna Restriction
The antenna is designed as permanent attached and no consideration of replacement.