Theory of Operation: Controller 3-69
3.2.9.8 SSI
The audio SSI bus is available at the bluetooth interface connector (J3001). The SSI_FS (J3001-55),
SSI_CLK (J3001-57), SSI RX data signals (J3001-47 and J3001-49), and SSI TX data signals
(J3001-51 and J3001-53) are routed to the connector.
3.2.9.9 USB
A dedicated USB interface is available at the bluetooth interface connector (J3001). The USB_DM
(J3001-33), USB_DP (J3001-35), and USB_VBUS (J3001-32) are routed to the connector. This USB
interface connects to the OMAP IC's USB 1 Port through the MAKO IC. The signal path is from
OMAP's 3 pin interface, USB1_TXEN (U6302-W16), USB1_DAT (U6302-W14), and USB1_SE0
(U6302-R13) to MAKO's USB transceiver (U6501- B8,C8, and D8). MAKO's USB differential output
is USB1_DP (U6051-N6) and USB1_DM (U6501-P7), which connects to the bluetooth interface pins.
The VBUS to the bluetooth interface is supplied by MAKO's VBUS 1 supply (U6501-H10) through
transistor Q6502.
3.2.9.10 Type 1 / GPIO
Provisions for a future Type 1 encryption interface have been provided, which requires the TX_Inhibit
(J3001-56), Key_Zeroize (J3001-58) and Wakeup (J3001-41) signals
The 60-pin connector (J3001) pin definition is summarized in Table 3-18 below.
Table 3-17. Bluetooth Module MMC Signals
SDIO Signal Bluetooth Conn.
(J3001)
OMAP Pin
(U6302)
MMC_CLK 36 V11
MMC_CLKIN 38 M15
MMC_CMD 40 P11
MMC_DAT0 42 R11
MMC_DAT1 44 V10
MMC_DAT2 46 W10
MMC_DAT3 48 W11
MMC_CMD_DIR 50 P19
MMC_DAT_DIR1 54 P18
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