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SE97 Datasheet(PDF) 15 Page - NXP Semiconductors

Part # SE97
Description  DDR memory module temp sensor with integrated SPD, 3.3 V
PDF  55 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

SE97 Datasheet(HTML) 15 Page - NXP Semiconductors

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SE97_7
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 07 — 29 January 2010
15 of 55
NXP Semiconductors
SE97
DDR memory module temp sensor with integrated SPD, 3.3 V
A = ACK = Acknowledge bit. W = Write bit = 0. R = Read bit = 1.
Fig 11. SMBus/I2C-bus write to the Pointer register followed by a write data word
123456789123456789
SCL
A6
A5
A4
A3
A2
A1
A0
SDA
D7
D6
D5
D4
D3
D2
D1
D0
device address and write
write register address
WA
S
START
by host
ACK
by device
A
ACK
by device
(cont.)
(cont.)
002aab412
123456789123456789
SCL
D15
D14
D13
D12
D11
D10
D9
SDA
D7
D6
D5
D4
D3
D2
D1
D0
most significant byte data
least significant byte data
A
by host
ACK
by device
P
STOP
by host
D8
A
ACK
by device
A = ACK = Acknowledge bit. A = NACK = No Acknowledge bit. W = Write bit = 0. R = Read bit = 1.
Fig 12. SMBus/I2C-bus write to Pointer register followed by a repeated START and an immediate data word read
123456789123456789
SCL
A6
A5
A4
A3
A2
A1
A0
SDA
D7
D6
D5
D4
D3
D2
D1
D0
device address and write
read register address
WA
S
START
by host
ACK
by device
A
ACK
by device
(cont.)
(cont.)
123456789
D15
D14
D13
D12
D11
D10
D9
D8
returned most significant byte data
A
ACK
by host
SCL
SDA
123456789
SCL
A6
A5
A4
A3
A2
A1
A0
SDA
device address and read
RA
SR
repeated
START
by host
ACK
by device
(cont.)
(cont.)
002aac686
123456789
D7
D6
D5
D4
D3
D2
D1
D0
returned least significant byte data
P
STOP
by host
A
NACK
by host



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