Datasheet > EVAL-ADM1023

EVAL-ADM1023

更新时间： 2022-12-12 00:42:19

品牌	Logo	应用领域
亚德诺 - ADI		微处理器监控
页数	文件大小	规格书
12页	293K
描述
Evaluation Board for Microprocessor System Temperature Monitor

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EVAL-ADM1023 数据手册

Preliminary Technical Data

EVAL-ADM1023

TABLE 2. AD M1023 D E VICE AD D RE SSE S

C O NNE C T O R S , S WIT C H E S AND IND IC AT O R S

T he function of the various connectors, links and

indicators on the evaluation board are explained below.

Address P ins

AD D 1 (LK2)

D evice Address

Binary H ex

AD D 0 (LK3)

0(LK3 Closed)

NC(LK Open)

0(LK2 Closed)

0(LK C losed)

0011000(0)

T E S T C O NNE C T O R

0011001(0)

0101001(0)

0101010(0)

T est Connector J1 allows an external diode to be

connected between the D+ and D- terminals of the

AD M 1023

NC(LK2 Open) 0(LK3 Closed)

NC(LK2 Open) NC(LK3 Open)

C E NT R O NIC S INT E R F AC E C AB LE

T he evaluation board and the personal computer may be

connected via the printer parallel port using the contronics

cable provided. T he connections to J2 are as follows.

ST AND BY INP UT LK4

T he ADM1023 has an active low standby input, pin 15

controlled by LK4 on the evaluation board. T his is a logic

input that enables selection between normal operation

(high) and standby operation (low). Without the shorting

link the pin is high (normal mode). With the shorting link

the pin is low (standby mode). T his input performs the

same function as bit 7 of the status register

RE MO T E SE NSO R SE LE C T LK1

T he function of this jumper is to allow the user to choose

between measuring tempertature using the on-board

remote sensor and an external one connected between the

D+ and D- terminals of J1. When the middle pin is linked

to B the on-board sensor is used and when the middle pin

is linked to A the off-board sensor is used.

TABLE 1. AD M1023 SE NSO R SE LE CTIO N

LK1 P osition

Sensor Selected

External Sensor

On-baord NPN Sensor

SE RIAL BUS AD D RE SS SE LE C T

LK2 and LK3 are used to set the two LSB’s of the

ADM1023’s serial bus address, ADD0 and ADD1. T hese

pins are tri-state and can be grounded, left unconnected or

tied to V_DD. T his means a total of nine addresses are

possible. However for simplicity on the evaluation board a

jumper is used to allow each pin two states ( 4 Addresses).

T he pin is floating when the shorting link is not on the

board. T he pin is grounded when the shorting link is

placed on the board. It should be noted that ADD0 and

ADD1 are only read at power up. If LK2 or LK3 are

changed while the ADM1023 is on, the change of address

will not be effective until the device has been powered off

and then on again.

As the serial bus address is seven bits, when storing it as

an 8-bit word it must be left or right justified, with either

the MSB or the LSB of the 8-bit word as zero. T he

ADM1023 evaluation software stores the 7-bit serial bus

address as left justified and makes the LSB zero. T able 2

shows the four possible addresses possible on the

evaluation board

–4–

REV. A

1 2 345 6 7...12

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