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ZSPM2000 Scheda tecnica(PDF) 24 Page - Integrated Device Technology

Il numero della parte ZSPM2000
Spiegazioni elettronici  True Digital PWM Controller
PDF  42 Pages
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Produttore elettronici  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
Logo IDT - Integrated Device Technology

ZSPM2000 Scheda tecnica(HTML) 24 Page - Integrated Device Technology

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ZSPM2000 Datasheet
© 2016 Integrated Device Technology, Inc.
24
January 27, 2016
4
PMBus™ Functionality
4.1.
Introduction
The ZSPM2000 supports the PMBus™ protocol to enable the use of configuration, monitoring, and fault manage-
ment during run-time.
The PMBus™ host controller is connected to the ZSPM2000 via the PMBus™ pins: SDA and SCL. A dedicated
SMBALERT pin is provided to notify the host that new status information is present.
The ZSPM2000 supports packet error correction (PEC) according to the PMBus™ specification.
4.2.
Timing and Bus Specification
Figure 4.1
PMBus™ Timing Diagram
Table 4.1
PMBus™ Timing Specification
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SMBus operation frequency
fSMB
10
400
500
kHz
Bus free time between start and stop
tBUF
1.3
µs
Hold time after start condition
tHD:STA
0.6
µs
Repeat start condition setup time
tSU:STA
0.6
µs
Stop condition setup time
tSU:STO
0.6
µs
Data hold time
tHD:DAT
300
ns
Data setup time
tSU:DAT
100
ns
Clock low time-out
tTIMEOUT
25
35
ms
Clock low period
tLOW
1.3
µs
Clock high period
tHIGH
0.6
µs
Cumulative clock low extend time
tLOW:SEXT
25
ms
Clock or data fall time
tF
300
ns
Clock or data rise time
tR
300
ns
P
S
tBUF
tHD:STA
tLOW
tR
tHD:DAT
tHIGH
tF
tSU:DAT
Sr
P
tSU:STO
tSU:STA
SCL
SDA



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