KXUSB-910H Keterex, KXUSB-910H Datasheet - Page 10

• Manufacturer Part Number: KXUSB-910H
• Description: Interface Modules & Development Tools USB-to-SPI/I2C Embedded Sys Intrfce
• Manufacturer: Keterex

Specifications of KXUSB-910H

• Interface Type: USB, I2C, SPI
• Operating Supply Voltage: 1.65 V to 5 V
• Product: Interface Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

pin) or until it has transferred all outgoing data (if it has no Slave-Select pin). If a slave has a Slave-
Select pin and a master requests more data than available in its outgoing buffer, the slave will enter
loopback mode in which it transmits its incoming data back to the master. Once the slave disarms, the
incoming data can be retrieved from the device and the next operation can be initiated by the host PC.
system via a ribbon connector or break-out cable, the Adapter PCB is equipped to be mounted directly
6.4.2. SPI Slave Operations
As a SPI Slave device, the USB-910H Adapter can be configured to respond to any one of 5 Slave-Select
pins and can be configured to activate if that pin asserts either high or low. In addition, a slave device
can operate with no Slave-Select – it will transfer data on all SCLK cycles.
Like a SPI Master, a slave device can transfer data either LSB or MSB first, and can support all standard
SPI clocking modes. Slave operations are initiated by sending the desired outgoing data to the Adapter,
then sending a command which “arms” the slave, causing it to start watching for its Slave-Select pin to
assert. The slave will remain armed until its Slave-Select asserts and de-asserts (if it has a Slave-Select
7. IN SYSTEM MOUNTING
Although generally the USB-910 Adapter will be used in its factory enclosure and connected to a target
into a target system when appropriate. The diagram below shows a simplified top-view of the Adapter
PCB layout. For more information, contact Keterex at [e-mail].
10
Pin 1
Header
5 x 2
Mounting
Holes
85.9mm
4mm
Connector
USB-B