XRT83VSH38 データシートの表示（PDF） - Exar Corporation

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XRT83VSH38

8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT

Exar Corporation 

REV. 1.0.7

XRT83VSH38

8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT

SIGNAL NAME

TERSEL1

TERSEL0

TEST

ICT

BGA

LEAD #

T11

R11

U12

V12

TYPE

DESCRIPTION

I Termination Impedance Select

Hardware Mode Only

The TERSEL[1:0] pins are used to select the transmitter and receiver impedance.

By default, the impedance is set to 100Ω.

"00" = 100Ω

"01" = 110Ω

"10" = 75Ω

"11" = 120Ω

NOTE: These pins are internally pulled "Low" with a 50kΩ resistor.

I Factory Test Mode

For normal operation, the TEST pin should be tied to ground.

NOTE: Internally pulled "Low" with a 50kΩ resistor.

I In Circuit Testing

When this pin is tied "Low", all output pins are forced to "High" impedance for in cir-

cuit testing.

NOTE: Internally pulled "High" with a 50KΩ resistor.

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