CSR BlueCore CSR8640 BGA, User Manual

Page: 18 / 110

Codec Ball Pad Type Supply Domain Description
MIC_BIAS B9 Analogue out VBAT / 3V3_USB Microphone bias
SPKR_LP A4
Analogue out VDD_AUDIO_DRV
Speaker output positive, left
SPKR_LN B4 Speaker output negative, left
SPKR_RP A6
Analogue out VDD_AUDIO_DRV
Speaker output positive, right
SPKR_RN B6 Speaker output negative, right
AU_REF A8 Analogue in VDD_AUDIO
Decoupling of audio reference (for high-
quality audio)
LED Drivers Ball Pad Type Supply Domain Description
LED[2] B10
Bidirectional VDD_PADS_1
LED driver.
Alternative function: programmable
output PIO[31]
Note:
As output is open-drain, an external
pull-up is required when PIO[31] is
configured as a programmable
output.
LED[1] K1
LED driver.
Alternative function: programmable
output PIO[30].
Note:
As output is open-drain, an external
pull-up is required when PIO[30] is
configured as a programmable
output.
LED[0] J2
LED driver.
Alternative function: programmable
output PIO[29].
Note:
As output is open-drain, an external
pull-up is required when PIO[29] is
configured as a programmable
output.
Advance Information
This material is subject to CSR's non-disclosure agreement
© Cambridge Silicon Radio Limited 2011
Page 18 of 110
CS-209182-DSP1
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CSR8640 BGA
Data Sheet