參數(shù)資料
型號(hào)： P62000NLG8
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 穩(wěn)壓器
英文描述： DUAL SWITCHING CONTROLLER, QCC64
封裝： ROHS COMPLIANT, QFN-64
文件頁(yè)數(shù)： 31/62頁(yè)
文件大小： 1221K
代理商： P62000NLG8
IDTP62000
2/3/4-PHASE PWM CONTROLLER WITH DYNAMIC VOLTAGE & FREQUENCY SCALING
IDT 2/3/4-PHASE PWM CONTROLLER WITH DYNAMIC VOLTAGE & FREQUENCY SCALING
37
IDTP62000
REV E 050510
CONFIDENTIAL
SIF Specifications
START and STOP Conditions
The START and STOP conditions are generated by the IDTP62000 master. The bus is considered busy after the START
condition. The bus is busy if a repeated START is generated.
A start condition is defined by a HIGH to LOW transition on the SIFDAT line while SIFCLK is HIGH. A STOP condition is
defined as a LOW to HIGH transition on the SIFDAT line while SIFCLK is HIGH.
Data Transfer
Every byte on the SIFDAT line must be eight bits long. Each byte has to be followed by an acknowledge bit. Data bit transfer
is from MSB first to LSB last. If a slave is busy and can't receive or transmit another complete byte of data, it can hold the
SIFCLK LOW to force the master to wait. Data transfer continues when SIFCLK is released.
Arbitration
As the IDTP62000 is a master and the 9CPS4592 is a slave no master/master arbitration is required.
7-Bit Addresses
After the START condition, a slave address is sent. This address is 7 bits long followed by an eighth bit, LSB, for
READ/WRITE (R/W). A zero (0) in the eighth bit is a WRITE; a one (1) is a READ. A data transfer may be terminated by a
STOP condition generated by the master. If the master still wishes to communicate on the bus, it can generate a repeated
START condition and address another slave without first generating a STOP condition.
When an address is sent, each device in the system connected to the SIF compares the first seven bits after the START
condition with its address. If they match, the device considers itself addressed by the master as a slave/receiver or
slave/transmitter, depending on the R/W bit.
Figure 30: SIF Byte Configuration
SIF Command Set
9CPS4592 SIF address: D0h (same as its SMBus address)
S 7 6 5 4 3 2 1 0
Address byte
A 7 6 5 4 3 2 1 0
Command byte
A 7 6 5 4 3 2 1 0
Data byte
A
SStart Bit
0
Read / Write bit
A
Acknowledge bit
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