
CMM-9304-V2.1
Bluetooth 4.2 / 5.0 compatible module
SPEC No.
CMM-9304-V2.1
BLE module
Revision
2.8
State
2017-11-13
C-MAX printed
2017-11-13
Version
English
Page
2 of 11
C-MAX
1.2.1 Typical Module Pin Assignment
SPI Slave Mode configuration
Module Pin
Number
Module Pin
Name
Input / Output
relative to module
Pin Description
1
ANT
I
RF single ended antenna connection pin (50 ohm)
2
GND
GND
Ground Connection
3
VBAT
Supply
VCC Voltage Supply
4
VIO
Supply
GPIO Voltage Level
5
EN
I
Chip Enable (Active HI)
6
TM / GPIO5
I/O
RESET(Active Low)/Logic Input/output
7
URX / GPIO6
O
UART Data in/ Logic Input/output
8
CSN / GPIO0
I
SPI Chip Select (Negated)
9
SCK / GPIO1
I
SPI Clock Input
10
MISO / GPIO2
I/O
SPI Data Out
11
MOSI / GPIO3
I/O
SPI Data In
12
UTX / GPIO7
O
UART Data Out/ Logic Input/output
13
RDY / GPIO4
O
SPI Ready signal
14
TCK / GPIO8
I/O
JTAG/ Logic Input/output
15
TDO / GPIO9
I/O
JTAG/ Logic Input/output
16
TDI / GPIO10
I/O
JTAG/ Logic Input/output
17
TMS / GPIO11
I/O
JTAG/ Logic Input/output
This module can also be configured into other configuration modes and the pins will be converted to
different definitions as the following table
: