Datasheet

Emulator User’s Guide for MPLAB X IDE
DS52085A-page 116  2013 Microchip Technology Inc.
13.3.1 High-Speed Driver Board
The high-speed driver board consists of two separate multipoint LVDS (Low Voltage
Differential Signaling) transmitters and receivers for clock and data. Multipoint LVDS
requires 100 ohm terminations at each driver output and receiver input, per the stan-
dard, and multipoint configurations type 2 receivers are used, as these are intended for
control signals or where fail-safe provisions are needed. Even though the standard
allows for any combination of drivers, receivers and/or transceivers of up to 32 on the
line, only two will be used. The driver board has a port expansion which is controlled
by an I
2
C™ interface for sending/receiving status information to/from the emulator. The
high-speed driver board assembly is inserted into the emulator pod via the card guide.
FIGURE 13-1: MODULAR CONNECTORS PINOUT OF HIGH-SPEED DRIVER
BOARD
Note: The driver board can support data rates up to 100M/bits. However, due to
device speeds, the acutal rate is up to 20M/bits.
1
8
2
1
4
3
6
5
2
1
4
3
6
5
J2
J3
J2 Pinout
J3 Pinout
* Optional - see Section 3.6.2 “SPI Trace Connections (High-Speed/LVDS
Connection)”.
Pin Name Function Pin Name Function
1 LVD+ LV Std Data + 5 GND Ground
2 LVD– LV Std Data – 6 LVC– LV Std Clock –
3 LVC+ LV Std Clock + 7 V
DD_TGT VDD on target
4LV_V
DD Power 8 VPP_TGT VPP on target
Pin Name Function Pin Name Function
1 DATAEN+ Std Data Enable + 5 USPID– *Serial Data –
2 DATAEN– Std Data Enable – 6 CLKEN– Std Clock Enable –
3 CLKEN+ Std Clock Enable + 7 USPIC+ *Serial Clock +
4 USPID+ *Serial Data + 8 USPIC– *Serial Clock –
8
7
8
7
1
8
Bottom view of Modular Connectors
Pinout on HS Driver Board
Front view of Modular Connectors
on HS Driver Board