STU2071 데이터 시트보기 (PDF) - STMicroelectronics

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STU2071

4B3T U INTERFACE CIRCUIT

STMicroelectronics 

STU2071

DIGITAL INTERFACE

UIC is provided with a digital serial interface,

named V*, which operates in two modes.

In Fig. 6 the frame format for both modes is

shown.

The base frame consists of:

B1 : 64 kbit/s transparent data channel

B2 : 64 kbit/s transparent data channel

B2* : Monitor channel

B1* : 8 bits so set

D1/D2 : 16 kbit/s D channel

A1..A4 : Command/Indicate channel

T

: Transparent service channel

E

: Extension bit

In Fig. 7 and 8 the timings in Continuous and in

Figure 6: V* Frame Format.

Burst mode are given.

B2* available messages (do not use in REPETER

modes):

Code

74H

75H

76H

77H

EFH

(F0-FF)H

All others

Function

Set RD1 to HIGH

Set RD2 to HIGH

Set RD1 and RD2 to HIGH

Reset RD1 and RD2 to LOW

Reset frame error counter

NOD

Not defined

In Fig. 7 and 8 the timings in Continuous and in

Burst mode are given.

Figure 7: Continuous Mode.

8/18

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