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參數(shù)資料
| 型號： | MPC92433AER2 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 1428 MHz, OTHER CLOCK GENERATOR, PQFP48 |
| 封裝： | ROHS COMPLIANT, LQFP-48 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大小： | 412K |
| 代理商： | MPC92433AER2 |
Advanced Clock Drivers Devices
Freescale Semiconductor
11
MPC92433
I2C — Register Access in Parallel Mode
The MPC92433 supports the configuration of the
synthesizer through the parallel interlace (PLOAD = 0) and
serial interface (PLOAD = 1). Register contents and the
divider configurations are not changed when the user
switches from parallel mode to serial mode. However, when
switching from serial mode to parallel mode, the PLL dividers
immediately reflect the logical state of the hardware pins
M[9:0], NA[2:0], NB, and P.
Applications using the parallel interface to obtain a PLL
configuration can use the serial interface to verify the divider
settings. In parallel mode (PLOAD = 0), the MPC92433
allows read-access to PLL_L and PLL_H through I2C (if
PLOAD = 0, the current PLL configuration is stored in PLL_L,
PLL_H. The GET command is not necessary and also not
supported in parallel mode). After changing from parallel to
serial mode (PLOAD = 1), the last PLL configuration is still
stored in PLL_L, PLL_H. The user now has full write and read
access to both configuration registers through the I2C bus
and can change the configuration at any time.
Programming the I2C Interface
The 7-bit I2C slave address of the MPC92433 synthesizer
is a combination of a 5-bit fixed addresses and two variable
bits which are set by the hardware pins ADR[1:0]. Bit 0 of the
MPC92433 slave address is used by the bus controller to
select either the read or write mode. ’0’ indicates a
transmission (I2C-WRITE) to the MPC92433. ’1’ indicates a
request for data (I2C-READ) from the synthesizer. The
hardware pins ADR1 and ADR0 and should be individually
set by the user to avoid address conflicts of multiple
MPC92433 devices on the same I2C bus.
Write Mode (R/W = 0)
The configuration registers are written by the bus
controller by the initiation of a write transfer with the
MPC92433 slave address (first byte), followed by the address
of the configuration register (second byte: 0x00, 0x01 or
0xF0), and the configuration data byte (third byte). This
transfer may be followed by writing more registers by sending
the configuration register address followed by one data byte.
Each byte sent by the bus controller is acknowledged by the
MPC92433. The transfer ends by a stop bit sent by the bus
controller. The number of configuration data bytes and the
write sequence are not restricted.
Table 15. CMD (0xF0): PLL Command (Write-Only)
Command
Op-Code
Description
INC
xxxx0001b
(0x01)
Increase internal PLL frequency
M:=M+1
DEC
xxxx0010b
(0x02)
Decrease internal PLL frequency
M:=M-1
LOAD
xxxx0100b
(0x04)
Update the PLL divider config.
PLL divider M, N, P:=PLL_L, PLL_H
GET
xxxx1000b
(0x08)
Update the configuration registers
PLL_L, PLL_H:=PLL divider M, N, P
Table 16. PLL Configuration in Parallel and Serial Modes
PLL
Configuration
Parallel
Serial (Registers
PLL_L, PLL_H)
M[9:0]
Set pins M9–M0
M[9:0] (R/W)
NA[2:0]
Set pins NA2...NA0
NA[2:0] (R/W)
NB
Set pin NB
NB (R/W)
P
Set pin P
P (R/W)
LOCK status
LOCK pin 26
LOCK (Read only)
Table 17. I2C Slave Address
Bit
76
5
4
3
2
1
0
Value
10
1
0
Pin
ADR1
Pin
ADR0
R/W
Table 18. Complete Configuration Register Write Transfer
1 bit
7 bits
1 bit
8 bits
1 bit
8 bits
1 bit
8 bits
1 bit
8 bits
1 bit
Start
Slave address
R/W
ACK
&PLL_H
ACK
Config-Byte 1
ACK
&PLL_L
ACK
Config-Byte 2
ACK
Stop
10110xx(1)
1. xx = state of ADR1, ADR0 pins
0
0x01
Data
0x00
Data
Master
Mast
Slave
Master
Slave
Master
Slave
Master
Slave
Master
Slave
Mast
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC92439 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:900MHz, Low Voltage, LVPECL Clock Syntheesizer |
| MPC92439AC | 功能描述:IC SYNTHESIZER LVPECL 32-LQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| MPC92439ACR2 | 功能描述:IC SYNTHESIZER LVPECL 32-LQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| MPC92439EI | 功能描述:時鐘合成器/抖動清除器 FSL 900MHz LVPECL Freq. Synthesizer RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| MPC92439EIR2 | 功能描述:時鐘合成器/抖動清除器 FSL 900MHz LVPECL Freq. Synthesizer RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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