Operating instructions

Controller Board 5-7
2.5 ACC_ID Interface
Smart accessories use the Accessory ID (ACC_ID) Interface to help the radio determine which smart
accessory, if any, are attached to the radio. Figure 5-6 illustrate the ACC_ID connections used within
the radio.
Figure 5-6: ACC_ID Interface Connections
2.6 USB Interface
The OMAP processor (U1000) supports two USB ports. The radio makes use of one USB port to
communicate with smart accessories, and connection to a host computer for radio programming via
CPS and tuning via Tuner Tool.
Note: The USB ports are designed to support Motorola accessories only and will not support third
party “Plug-n-Play” USB devices.
Figure 5-7 shows the details of the HSSI connections within the radio.
Figure 5-7: USB Interface Connections
The OMAP processor USB host controller communicates with accessories at either 1.5 Mbps or 12
Mbps data rates depending on the accessory. The USB port can be used as a host or a device.
MAKO
U3000
ACC_ID (P9)
2-BitTranslator
U3009
2.9
V
Vref1 Vref2
2.9V
5V
SCL1
SDA1
SCL2
SDA2
5V
OMAP1710
U1000
HDQ (N20) ACC_ID_UP (L7)
R3300 R3304
R3031
1.875V
Vbus1
Monitor
USB1
Transceiver
3/6 Wire
IF and
SPI
Registers
DP (N6)
DM (P7)
USB1_OE (B08)
USB1_SE0 (D08)
USB1_DAT_TXD (C08)
Mako
OMAP 1710
VBus1_Sens (E12)
VBus1 (H10)
VBus1_Cmd (C14)
D+
D-
VBus
R3103 + R3102
USB1_TXEN (W16)
USB1_DAT (W14)
USB1_SE 0 (R13)
USB_INT (L15) USB_INTX (C10)
Q3000
VBUS SUPPLY