Table of Contents
Advertisement
9. Daughter Board Design Guide
This chapter describes the design of the daughter board to be connected to the extension slot of Solution Engine2.
The daughter board may contain user-specific devices and can be controlled by the address bus, data bus, and
control signals of the SH7760 that connect to the extension slots of Solution Engine2.
9.1 Daughter Board Dimensions
The recommended daughter board size is the CPU board size (120mm x 75mm) of Solution Engine2.
9.2 Daughter Board Power Supply
Table 9.1 shows the voltage and current that can be supplied from Solution Engine2 to a daughter board. When
a daughter board requires more current, a power supply must be mounted on the daughter board.
Extension slot signal name
3.3V
3.3VSB
5V
[Note]
(1) When a peripheral device operating on the bus power via the USB has been connected to Solution Engine2 or the
PCMCIA card is in use, the permissible current is the current obtained by subtracting the dissipation current of the
device and card from the permissible current.
Table 9.1 Voltage and Current to the Daughter Board
Output voltage
Permissible current
3.3V
250mA
5V
250mA
Remarks
3.3V: Supplied when the H7760 is turned ON.
3.3VSB: Always supplied when the AC adais
connected.
Supplied when the SH4460 is turned ON.
113
Advertisement
Table of Contents
