SE97B datasheet(26/53 Pages) NXP

26 / 53 page

SE97B_1

Product data sheet

Rev. 01 — 27 January 2010

26 of 53

NXP Semiconductors

SE97B

DDR memory module temp sensor with integrated SPD

EOCTL

EVENT Output Control.

0 — EVENT output disabled (default)

1 — EVENT output enabled

When either of the Critical Trip or Alarm Window lock bits is set, this bit

cannot be altered until unlocked.

CVO

Critical Event Only.

0 — EVENT output on Alarm or Critical temperature event (default)

1 — EVENT only if temperature is above the value in the critical

temperature register

When the alarm window lock bit is set, this bit cannot be altered until

unlocked.

EVENT Polarity.

0 — active LOW (default)

1 — active HIGH. When either of the Critical Trip or Alarm Window lock

bits is set, this bit cannot be altered until unlocked.

When the EP (EVENT Polarity) bit is changed, the EVENT output would

immediately change state on the SE97B. A new Shutdown mode has been

added on the SE97B with two states defined by the SMBus register

EventSleepState = 0. Freeze state of EVENT output and

EventSleepState = 1: de-asserted state of EVENT output. So now if the EP

bit changes, the EVENT output state will change immediately even during

shutdown. It will not wait for the part to do a new temperature conversion

after coming out of shutdown. Changes to all other bits in the CONFIG

conversion happens when the part comes out of shutdown. The EP bit is not

related to temperature conversion or readings or if the part is in shutdown or

active.

Remark: In Shutdown mode, when DisableTimeout = 1 or if

DisableTimeout = 0 and Enable SDIO = 0, the EVENT Polarity bit will not

take effect immediately, but will updated after it comes out of shutdown.

EMD

EVENT Mode.

0 — comparator output mode (default)

1 — interrupt mode

When either of the Critical Trip or Alarm Window lock bits is set, this bit

cannot be altered until unlocked.

Table 13.

Configuration register (address 01h) bit description …continued

Bit

Symbol

Description

SE97B Datasheet(PDF) 26 Page - NXP Semiconductors

SE97B Datasheet(HTML) 26 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

Datasheet Download

Link URL