4.11.1 Tsi148 Vme Controller; Usb; I2C Devices - SMART Embedded Computing MVME2502 Installation And Use Manual

Functional Description

4.11.1 Tsi148 VME Controller

The VMEbus interface for the MVME2502 is provided by the Tsi148 VMEbus controller.
The Tsi148 provides the required VME, VME extensions, and 2eSST functions. TI
SN74VMEH22501transceivers are used to buffer the VME signals between the Tsi148 and
the VME backplane. Refer to the Tsi148 user's manual for additional details and/or
programming information.
4.12

USB

The MVME2502 processor implements a dual-role (DR) USB 2.0 compliant serial interface
engine. DC power to the front panel USB port is supplied using a USB power switch which
provides soft-start, current limiting, over current detection, and power enable for port 1.
2
4.13 I C Devices
The MVME2502 utilizes two I
two-wire, serial data (SDA) and serial clock (SCL), synchronous, multi-master bi-directional
serial bus that allows data exchange between this device and other devices such as VPD,
SPD, EEPROM, RTC, temperature sensor, RTM, XMC, and IDT clocking.
The user can configure the RTM I
duplication. For more information on I
Addressing on page
86
2
C ports provided by the board's processor. The I
2
C adders and should be aware to avoid address
2
C bus device addressing, see
130.
MVME2502 Installation and Use (6806800R96G)
Functional Description
2
C bus is a
2
I C Bus Device