CSR BlueCore CSR8640 BGA, User Manual

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1.3 Device Terminal Functions
Radio Ball Pad Type Supply Domain Description
BT_RF A3 RF VDD_ANA_RADIO
Bluetooth 50Ω transmitter output /
receiver input
Oscillator Ball Pad Type Supply Domain Description
XTAL_IN C1
Analogue VDD_AUX
For crystal or external clock input
XTAL_OUT B1 Drive for crystal
USB Ball Pad Type Supply Domain Description
USB_P H10
Bidirectional 3V3_USB
USB data plus with selectable internal
1.5kΩ pull-up resistor
USB_N J10 USB data minus
SPI/PCM Interface Ball Pad Type Supply Domain Description
SPI_PCM# J4
Input with weak pull-
down
VDD_PADS_1
SPI/PCM# select input:
■
0 = PCM/PIO interface
■ 1 = SPI
Note:
SPI and PCM1 interfaces are mapped as alternative functions on the PIO port.
PIO Port Ball Pad Type Supply Domain Description
PIO[21] D10
Bidirectional with weak
pull-down
VDD_PADS_2 Programmable input / output line 21.
PIO[20] C10
Bidirectional with weak
pull-down
VDD_PADS_2 Programmable input / output line 20.
PIO[19] C9
Bidirectional with weak
pull-down
VDD_PADS_2 Programmable input / output line 19.
PIO[18] D9
Bidirectional with weak
pull-down
VDD_PADS_2 Programmable input / output line 18.
PIO[17] H2
Bidirectional with strong
pull-down
VDD_PADS_1
Programmable input / output line 17.
Alternative functions:
■
UART_CTS: UART clear to send,
active low
Advance Information
This material is subject to CSR's non-disclosure agreement
© Cambridge Silicon Radio Limited 2011
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CS-209182-DSP1
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CSR8640 BGA
Data Sheet