3-68 Theory of Operation: Controller
3.2.9.3 One-Wire
Pin 39 (J3001-39) provides the One-Wire bus to the bluetooth connector. The One-Wire signal is a
bi-directional data signal providing a data path from OMAP's One Wire peripheral (U6302-N20),
through MAKO's One-Wire segmentation switch input (U6501-L7) to the MAKO switch output
(U6501-M8), and ending at the bluetooth interface.
3.2.9.4 GPIO
Five GPIO signals are available at the bluetooth interface, signals GPIO_0 through GPIO_5. Table
13 shows the source of each of these I/O's, either from the CPLD or the OMAP IC.
3.2.9.5 Camera
Provisions for an embedded camera have been provided, bluetooth interface pins J3001-3 through
J3001-18, and pin J3001-20.
3.2.9.6 I2C
An I2C interface is available, bluetooth interface pins J3001-19 is the SCL signal and J3001-21 is the
SDA signal. The I2C_SCL is the clock signal, and the I2C_SDA is the data signal.
3.2.9.7 SDIO
A dedicated SDIO interface is available at the bluetooth interface connector (J3001). This SDIO
interface connects to the OMAP IC's MMC1 peripheral port. The even pins from J3001-36 through
J3001-50 are dedicated to this port. Table 3 shows the signal names, along with the bluetooth
interface and OMAP IC pin assignments.
Table 3-16. Bluetooth Module IO Summary
GPIO Signal Bluetooth Conn.
(J3001)
CPLD Pin
(U6101)
OMAP Pin
(U6302)
OPT_BD_GPIO_0 42 M13
OPT_BD_GPIO_1 41 M14
OPT_BD_GPIO_2 45 P8
OPT_BD_GPIO_3 22 M8
OPT_BD_GPIO_4 60 J2
OPT_BD_GPIO_5 52 Y5
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