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Copyright © 2013 Future Technology Devices International Limited

VM800C Datasheet

Version 1.0

Document Reference No.: FT_000844

Clearance No.: FTDI#

345



J4 – SP-

Audio speaker -ve from the onboard amplifier.



J5- SPI Interface

This is the interface where the SPI control and data signals are routed. There are also power and

ground pins on this interface. Note J5 is not soldered on the VM800C board by default.

Pin No.

Name

Type

Description

1

SCLK

I

SPI Clock input

2

MOSI

I

Master Out Slave in

3

MISO

O

Master In Slave out

4

CS#

I

Chip select , active low

5

INT#

OD

Host interrupt open drain output, active low.

On board 47k

Ω pull-up to 3.3V.

6

PD#

I

Active low power down input.

7

5V

P

5V power supply

8

3.3V

P

3.3V power supply

9

GND

P

Ground

10

GND

P

Ground

Table 3-6 – J5 Pinout



JP1- Audio Amplifier Power Select

This jumper provides the option to select the power supply voltage for the onboard power amplifier.

Pin No.

Name

1-2

3V3 selected

2-3

5V selected

Table 3-7 – JP1 Pin options

*This needs to be configured before audio can be heard



JP2 – On board amplifier enable

Solder connection fitted by default



JP3 - On board amplifier mute

Solder connection not fited by default



SW1 – Power source select

Pin No.

Name

1-2

Power from CN1

2-3

Power from CN2

Table 3-8 – JP1 Pin options