|
|
PDF MAX6621 Data sheet ( Hoja de datos )
| Número de pieza | MAX6621 | |
| Descripción | PECI-to-I2C Translator | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MAX6621 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
19-0729; Rev 2; 12/09
PECI-to-I2C Translator
General Description
The MAX6621 PECI-to-I2C translator provides an effi-
cient, low-cost solution for PECI-to-SMBusTM/I2C proto-
col conversion. The PECI-compliant host reads
temperature data directly from up to four PECI-enabled
CPUs. Interrupts are generated when the measured
temperature exceeds the high-temperature limit and
causes ALERT to assert. The RESET input allows the
host to reset the I2C bus in the event of a communica-
tion error.
The I2C interface provides an independent serial com-
munication channel to communicate synchronously with
peripheral devices in a multiple master or multiple slave
system. This interface allows a maximum serial-data
rate of 400kbps.
The MAX6621 is designed to operate from a +3.0V to
+3.6V supply voltage and ambient temperature range
of -20°C to +120°C.
Servers
Workstations
Desktop Computers
Applications
SMBus is a trademark of Intel Corp.
μMAX is a registered trademark of Maxim Integrated Products, Inc.
Features
♦ 400kbps I2C-Compatible, 2-Wire Serial Interface
♦ +3V to +3.6V Supply Voltage
♦ PECI-Compliant Port
♦ PECI-to-I2C Translation
♦ ALERT Output
♦ RESET Input (May Be Disabled as a Factory
Option)
♦ Programmable Temperature Offsets
♦ -20°C to +120°C Operating Temperature Range
♦ VREF Input Refers Logic Levels to the PECI
Supply Voltage
♦ Automatic I2C Bus Lockup Timeout Reset
♦ Lead-Free, 10-Pin µMAX® Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX6621AUB+
-20°C to +120°C
10 μMAX
MAX6621AUB+T -20°C to +120°C
10 μMAX
T = Tape and reel.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
SDA
I2C SCL
MASTER
+3.3V
VCC
SDA VREF
SCL MAX6621 PECI
RESET
ALERT
AD0
GND
VTT
VCPU
CPU
INTERNAL
TEMP
SENSOR
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
PECI-to-I2C Translator
Pin Description
PIN NAME
FUNCTION
1
PECI
Platform Environment Control Interface (PECI) Serial-Bus Input/Output
2
AGND
Analog Ground
3 AD0 I2C Bus Device Address Selection Input
4
SDA
I2C Bus Data Input/Output
5 SCL I2C Bus Clock Input/Output
6 VCC Power Supply. Bypass to GND with a 0.1μF capacitor.
7
GND
Power-Supply Ground
8
RESET
I2C Reset Input. Pull RESET low to reset I2C interface and default all registers to startup values.
Drive high for normal operation.
9
ALERT
ALERT Interrupt Open-Drain Output. Asserts low when any temperature exceeds the
programmed limit.
10
VREF
PECI Input Supply Voltage. Bypass VREF to AGND with a 0.1μF capacitor.
Block Diagram
SDA
RESET
ALERT
PECI
MAX6621
I2C
PORT
PECI
TRANSLATION
ENGINE
PECI
PORT
SCL
AD0
VREF
_______________________________________________________________________________________ 5
5 Page 
PECI-to-I2C Translator
data (with the exception of error codes) and the relative
temperatures are listed for reference only. Table 12
shows the values with 16-bit and alternate word format.
The read maximum temperature command from Table 11
returns the highest temperature that is not an error
code from the enabled PECI sockets and domains. This
operation works on signed numbers only and does not
give information as to what socket the temperature
result comes from. To find the socket and domain, use
the read maximum temperature address command as
shown in Table 13.
Table 13. Read Maximum Temperature
Address
COMMAND
DESCRIPTION
TYPE RESULT
Read address of
0Ah socket/domain with the ReadWord 16-bit
maximum temperature
The read maximum temperature address command
returns the register that had the highest temperature
when read maximum temperature was last called. An
error is returned if the read maximum temperature has
not been called or when the read maximum tempera-
ture itself returns an error.
Return Value Flow Chart
Figure 4 shows the operations performed on tempera-
ture data read through PECI.
DATA FROM PECI
Y ERROR?
N
AVERAGING
N ALT.
FORMAT?
Y
CONVERT
DATA
FORMAT
ADD OFFSET
RETURN DATA ON I2C
Figure 4. Operational Flowchart
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet MAX6621.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX6620 | Quad Linear Fan-Speed Controller | Maxim Integrated Products |
| MAX6621 | PECI-to-I2C Translator | Maxim Integrated Products |
| MAX6622 | 5-Channel Precision Temperature Monitor | Maxim Integrated Products |
| MAX66240 | DeepCover Secure Authenticator |  Maxim Integrated |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |