Ball
Pad Type
Supply Domain
Description
F1
Bidirectional with strong
pull-up
VDD_PADS_1
Programmable input / output line 16.
Alternative functions:
■
UART_RTS: UART request to
send, active low
D1
Bidirectional with strong
pull-up
VDD_PADS_1
Programmable input / output line 15.
Alternative functions:
■
UART_TX: UART data output
F2
Bidirectional with strong
pull-up
VDD_PADS_1
Programmable input / output line 14.
Alternative functions:
■
UART_RX: UART data input
G1
Bidirectional with strong
pull-down
VDD_PADS_1
Programmable input / output line 13.
Alternative function:
■
QSPI_IO[1]: serial quad I/O flash
data bit 1
E2
Bidirectional with strong
pull-up
VDD_PADS_2
Programmable input / output line 12.
Alternative function:
■
QSPI_FLASH_CS#: serial quad
I/O flash chip select
■
I2C_WP: I²C bus memory write
protect line
G2
Bidirectional with strong
pull-down
VDD_PADS_1
Programmable input / output line 11.
Alternative function:
■
QSPI_IO[0]: serial quad I/O flash
data bit 0
■
I2C_SDA: I²C serial data line
F5
Bidirectional with strong
pull-down
VDD_PADS_1
Programmable input / output line 10.
Alternative function:
■
QSPI_FLASH_CLK: serial quad
■
I2C_SCL: I²C serial clock line
G9
Bidirectional with strong
pull-down
VDD_PADS_2
Programmable input / output line 9.
E10
Bidirectional with strong
pull-up
VDD_PADS_2
Programmable input / output line 8.
G10
Bidirectional with strong
pull-down
VDD_PADS_2
Programmable input / output line 7.
E9
Bidirectional with strong
pull-down
VDD_PADS_2
Programmable input / output line 6.
Advance Information
This material is subject to CSR's non-disclosure agreement
© Cambridge Silicon Radio Limited 2011
Page 16 of 110
CS-209182-DSP1
CSR8640 BGA
Data Sheet