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CP3BT26
Table 3 CP3BT26 LQFP-144 Signal Descriptions
Name Pins I/O Primary Function
Alternate
Name
Alternate Function
X1CKI 1
Input 12 MHz Oscillator Input BBCLK BB reference clock for the RF Interface
X1CKO 1
Output 12 MHz Oscillator Output None None
X2CKI 1
Input 32 kHz Oscillator Input None None
X2CKO 1
Output 32 kHz Oscillator Output None None
RESET 1
Input Chip general reset None None
ENV0 1
I/O
Special mode select input with
internal pull-up during reset
PLLCLK PLL Clock Output
ENV1 1
I/O
Special mode select input with
internal pull-up during reset
CPUCLK CPU Clock Output
ENV2 1
I/O
Special mode select input with
internal pull-up during reset
SLOWCLK Slow Clock Output
TMS 1
Input
JTAG Test Mode Select
(with internal weak pull-up)
None None
TCK 1
Input
JTAG Test Clock Input
(with internal weak pull-up)
None None
TDI 1
Input
JTAG Test Data Input
(with internal weak pull-up)
None None
TDO 1
Output JTAG Test Data Output None None
RDY
1
Output NEXUS Ready Output None None
VCC 6
Input
2.5V Core Logic
Power Supply
None None
GND 6
Input Core Ground None None
IOVCC 10
Input 2.5
–3.3V I/O Power Supply None None
IOGND 11
Input I/O Ground None None
AVCC 1
Input PLL Analog Power Supply None None
AGND
1 Input PLL Analog Ground None None
ADVCC 1
Input ADC Analog Power Supply None None
ADGND
1 Input ADC Analog Ground None None
RFDATA
1 I/O Bluetooth RX/TX Data Pin None None
SCL
1 I/O ACCESS.bus Clock None None
SDA
1 I/O ACCESS.bus Serial Data None None
D- 1
I/O USB D- Upstream Port None None
D+ 1
I/O USB D+ Upstream Port None None
UVCC 1
Input 3.3V USB Transceiver Supply None None
UGND
1 Input USB Transceiver Ground None None
ADC0
1 I/O ADC Input Channel 0 TSX+ Touchscreen X+ contact
ADC1
1 I/O ADC Input Channel 1 TSY+ Touchscreen Y+ contact
ADC2
1 I/O ADC Input Channel 2 TSX- Touchscreen X- contact