National CP3BT26 - Manual (Page 9)

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CP3
BT26
Table 2 CP3BT26 LQFP-128 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 15 Input 2.5
–
3.3V I/O Power Supply None None
IOGND 14 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