A35 Power Switch Board; A40 Ac Distributer Board; A50 Disk I/F Board; A100 Asi Interface Module (Option 01) - Tektronix MTX100A Service Manual

Theory of Operation

A35 Power Switch Board

A40 AC Distributer Board

A50 Disk I/F board

A100 ASI Interface Module (Option 01)

Local Bus Interface
FPGA
2-4
The A35 Power Switch board is connected to the A20 PCI Backplane board
through the A30 Front Panel board. There are two USB connectors on the board
that are directly connected to the USB2.0 interface connector on the CPU board.
The board also has the power supply module for the LCD back light.
The A40 AC Distributer board supplies standby power (5VSB) to the SBC and
the ATX power control circuit on the A20 Backplane board.
The A50 disk I/F board interfaces between the secondary IDE connector on the
CPU board and the DVD drive module.
The A100 ASI Interface module consists of the following blocks:
The local bus interface communicates with the A12 Main board. There are two
sets of 16-bit signal lines for Rx and Tx: 8-bit data lines for single-end connec-
tion, 4-bit control lines for single-end connection, and 4-bit control lines for
differential connection. These lines are connected to the A12 Main board
individually.
The FPGA consists of an FIFO and a PCI interface. The FIFO is used to output a
stream data in packet mode. In this mode, a stream data from the A12 Main
board is stored in it, and then the data is output synchronously with the PSYNC
signal. In the burst mode, the FIFO is used only to synchronize with the clock
signal. There is a 32-bit resistor in the PCI interface and it controls the board
operation.
MTX100A MPEG Recorder & Player Service Manual