NXP Semiconductors EVB912UF32, Руководство пользователя, Страница: 18 / 44

EVB912UF32 Evaluation Board- Rev 1 User’s Manual
12 Configuration and Operation MOTOROLA
Configuration and Operation
2.5 Using the Memory Cards
The users must obtain their own compatible cards for use with these connectors.
Please note the power for most of these cards is connected to P3.3V which is
+3.3 volts. The CompactFlash (CF) connectors are power by VDDX that can
switch between zero volts, +3.3 volts and +5 volts under software control. W19
selects power to the control signals of all memory card connectors except J11
(the top side CF). VDDX always powers the control signals to J11. The user
J13 CompactFlash
(bottom side) Connector for a standard Type II CompactFlash card. Shares
connections with SD/MMC, Memory Stick, and SmartMedia
connectors.
J15, J23 GND Ground test point connections.
J16 Break Out Mainly SD/MMC and Memory Stick signals
J17 SD/MMC Connector for plugging in SD/MMC compatible memory cards.
J18 3.3V 3.3 volt test point
J19 Memory Stick Connector for standard Memory Stick memory cards. Slide the
memory stick into the connector until it snaps into place.
J20 Power Connector for n12V input power. Jack is center
positive.
J21 5V 5 volt test point
J22 12V 12 volt test point (input power)
J24 REC2_IN Unused RS-232 receiver output
J25 TR2_OUT Unused RS-232 transmitter output
J26 V- Negative RS-232 voltage test point
J27 V+ Positive RS-232 voltage test point
J28 REC2_OUT Unused RS-232 receiver input
J29 TR2_IN Unused RS-232 transmitter input
J30 RI Ring Indicator pin of RS-232 connector (J31)
J31 RS232 DCE Connector for RS232 interface using RXD and TXD only.
Jumpers can be used to looped back RS232 control signals to
each other.
Table 2-4 EVB912UF32 Connectors (Continued)
Connector Purpose Comments