TMB2193MS100 データシートの表示（PDF） - Fairchild Semiconductor

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TMB2193MS100

Demonstration Board for the TMC2193

Fairchild Semiconductor 

TMB2193MS100

PRODUCT SPECIFICATION

Table 4. Switch, Button, and Jumper Description (continued)

Button

JP20, JP21, JP22,

JP23

Switches

E1

E2

E3

Dip Switches

SA1-0

CAS

ERS

P3-0

Description

When JPx is open, the output video is a single 75Ohm termination.

When JPx is closed, the output video is a double 75Ohm termination.

Description

Onboard Clock Selection.

Selects either the PXCK from the TMC2072 or the onboard TTL clock oscillator.

Master Clock Selection.

When Pass is selected the clock source for the entire board is either the TMC2072 PXCK

or the TTL clock oscillator. When IXPCK is selected the clock source for the entire board

is the PXCK from the input header.

Output Header Clock Selection.

Selects either PXCK or PXCK for the output header.

Description

Configures the bits 2 and 1 of the TMC2193 RBUS chip address. When SAx is ON

(down), ESAx is in a LOW state. When SAx is OFF (up), ESAx is in a HIGH state.

Configures the bit 2 of the TMC2072 RBUS chip address. When CAS is ON (down),

GSA1 is in a LOW state. When CAS is OFF (up), GSA1 is in a HIGH state.

Configures the bit 1 of the TMC2072 RBUS chip address. When ERS is ON (down),

GSA0 is in a LOW state. When ERS is OFF (up), GSA0 is in a HIGH state.

Control Register Programming.

P3-0 selects which control register map to configure the devices with. Refer to Table 1

Default Control Register Maps for a description.

Setup Procedure

Set E1 to MPXCK and E2 to PASS, enable the onboard TTL

clock oscillator as the clock source.

1. Set ESA1-0 to ON (down).

2. Set P3-0 to 0h, P3 is ON (down), P2 is ON (down), P1 is

ON (down), and P0 is ON (down).

3. Plug in power supply connector and apply power. The

LED’s corresponding to +5 Volts and -5 Volts should be

illuminated.

4. Reset board by pressing the MRST button.

5. Connect a scope probe to TP25 and adjust R39 until the

sync to blank amplitude is 286 mV.

6. Connect a scope probe to TP19 and adjust R36 until the

sync to blank amplitude is 286 mV.

7. Connect a scope probe to TP21 and adjust R37 until the

sync to blank amplitude is 286 mV.

8. Connect a scope probe to TP23 and adjust R38 until the

burst amplitude is 286 mV.

Power Supply Requirements

The TMB2193MS100 board requires 1.5 Amps from the +5

Volt power supply and 0.5 Amps from the -5 Volt power sup-

ply. Both the +5 Volt and -5 Volt supplies are connected to

the input connector to supply the power requirements of any

upstream board. The +5 Volt power supply not only drives

TTL logic devices but it also provides the power and voltage

references to the D/A’s in the TMC2193. Therefore, it is rec-

ommended that a bench power supply be used with the cable

lengths kept to a minimum.

4

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