National Semiconductor CP3BT26 User Manual page 9

Name Pins I/O
Input 12 MHz Oscillator Input
X1CKI 1
Output 12 MHz Oscillator Output
X1CKO 1
Input 32 kHz Oscillator Input
X2CKI 1
Output 32 kHz Oscillator Output
X2CKO 1
Input Chip general reset
RESET 1
Special mode select input with
I/O
ENV0 1
internal pull-up during reset
Special mode select input with
I/O
ENV1 1
internal pull-up during reset
Special mode select input with
ENV2 1 I/O
internal pull-up during reset
JTAG Test Mode Select
Input
TMS 1
(with internal weak pull-up)
JTAG Test Clock Input
Input
TCK 1
(with internal weak pull-up)
JTAG Test Data Input
Input
TDI 1
(with internal weak pull-up)
Output JTAG Test Data Output
TDO 1
Output NEXUS Ready Output
RDY 1
2.5V Core Logic
Input
VCC 6
Power Supply
GND 6 Input Core Ground
IOVCC 15 Input 2.5
IOGND 14 Input I/O Ground
AVCC 1 Input PLL Analog Power Supply
1 Input PLL Analog Ground
AGND
Input ADC Analog Power Supply
ADVCC 1
1 Input ADC Analog Ground
ADGND
1 I/O Bluetooth RX/TX Data Pin
RFDATA
1 I/O ACCESS.bus Clock
SCL
1 I/O ACCESS.bus Serial Data
SDA
I/O USB D- Upstream Port
D- 1
I/O USB D+ Upstream Port
D+ 1
Input 3.3V USB Transceiver Supply
UVCC 1
1 Input USB Transceiver Ground
UGND
1 I/O ADC Input Channel 0
ADC0
1 I/O ADC Input Channel 1
ADC1
1 I/O ADC Input Channel 2
ADC2
Table 2 CP3BT26 LQFP-128 Signal Descriptions
Primary Function
–
3.3V I/O Power Supply
Alternate
Name
BBCLK BB reference clock for the RF Interface
None None
None None
None None
None None
PLLCLK PLL Clock Output
CPUCLK CPU Clock Output
SLOWCLK Slow Clock Output
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
None None
TSX+ Touchscreen X+ contact
TSY+ Touchscreen Y+ contact
TSX- Touchscreen X- contact
9
Alternate Function
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