LXT381II datasheet(26/36 Pages) INTEL

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LXT381 — Octal E1 Line Interface

Datasheet

Figure 8. Analog Test Port Application

Table 7.

Instruction Register (IR)

Instruction

Code #

Comments

EXTEST

000

Connects the BSR to TDI and TDO. Input pins values are loaded into the BSR.

Output pins values are loaded from the BSR.

INTEST_ANALOG

010

Connects the ASR to TDI and TDO. Allows voltage forcing/sensing through AT1 and

AT2. Refer to Table 6.

SAMPLE / PRELOAD

100

Connects the BSR to TDI and TDO. The normal path between the LXT381 logic and

the I/O pins is maintained. The BSR is loaded with the signals in the I/O pins.

IDCODE

110

Connects the IDR to the TDO pin.

BYPASS

111

Serial data from the TDI input is passed to the TDO output through the 1 bit Bypass

Transceiver 6

Transceiver 7

RRING7

TRING7

RTIP7

TTIP7

RRING6

TRING6

RTIP6

TTIP6

Transceiver 0

RRING0

RTIP0

JTAG Port

ASR Register

AT2

AT1

LXT381II 데이터시트(PDF) 26 Page - Intel Corporation

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