參數(shù)資料
型號: IDTCV128PV
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時鐘及定時
英文描述: CV128 SERIES, PLL BASED CLOCK DRIVER, 12 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO56
封裝: SSOP-56
文件頁數(shù): 6/12頁
文件大?。?/td> 77K
代理商: IDTCV128PV
COMMERCIALTEMPERATURERANGE
IDTCV128
1-TO-12DIFFERENTIALCLOCKBUFFER
3
PIN DESCRIPTION
Pin Name
Type
Pin #
Description
CLK_IN, CLK_IN#
IN
2, 3
0.7vDifferentialinput
DIF_[9:0] & DIF_[9:0]#
OUT
6, 7, 9, 10, 13, 14, 16,
0.7VDifferentialclockoutputs,gearedtoaratiooftheinputclock
17, 19, 20, 24, 25, 32, 33,
35, 36, 39, 40, 42, 43
DIF & DIF# [11:10]
OUT
47, 48, 51, 52
0.7VDifferentialclockoutputs,whichcanbeconfiguredtobe1:1insteadofgeared.Default
isgearedsameas0-9outputs.
OE_[9:0]#
IN
5, 8, 15, 18, 21, 26,
3.3VLVTTLactiveLOWinputforenablingcorrespondingdifferentialoutputclock.Clocks
31, 34, 41, 44
also can be disabled via SMBus registers
OE _10_11#
IN
53
3.3VLVTTLactivelowinputforenablingboth DIF10and11differentialoutputclocks.Clocks
also can be disabled via SMBus registers individually.
HIGH_BW#
IN
1
3.3 V LVTTL input for selecting the PLL bandwidth. 0 = HIGH BW, 1 = LOW BW.
SCL
IN
29
SMBus slave clock input
SDA
I/O, OC
28
Open collector SMBus data
IREF
IN
54
Aprecisionresistorisattachedtothispintosetthedifferentialoutputcurrent
SA_[0:1]
IN
4, 27
3.3V LVTTL input selecting the address. SA_[2:0] set device SMBus address.
(1)
SA_2/PLL_BYPASS#
IN
30
3.3VLVTTLinput forPLLbypassandSMBusaddress.0=PLLbypassmode;1=PLLmode
FS_A
IN
46
3.3VLVTTLinputtoestablishaHIGH(>200Mhz)orLOWfrequency(<200Mhz)range
VTT_PWRGD#/PWRDWN
IN
45
3.3 V LVTTL input to power up or power down the device.
INDEX BLOCK WRITE PROTOCOL
Bit
# of bits
From
Description
1
Master
Start
2-9
8
Master
See SMBus Address Mode table
10
1
Slave
Ack (Acknowledge)
11-18
8
Master
Registeroffsetbyte(startingbyte)
19
1
Slave
Ack (Acknowledge)
20-27
8
Master
Byte count, N (0 is not valid)
28
1
Slave
Ack (Acknowledge)
29-36
8
Master
first data byte (Offset data byte)
37
1
Slave
Ack (Acknowledge)
38-45
8
Master
2nd data byte
46
1
Slave
Ack (Acknowledge)
:
Master
Nth data byte
Slave
Acknowledge
Master
Stop
INDEX BLOCK READ PROTOCOL
Master can stop reading any time by issuing the stop bit without waiting
until Nth byte (byte count bit30-37).
Bit
# of bits
From
Description
1
Master
Start
2-9
8
Master
See SMBus Address Mode table
10
1
Slave
Ack (Acknowledge)
11-18
8
Master
Registeroffsetbyte(startingbyte)
19
1
Slave
Ack (Acknowledge)
20
1
Master
RepeatedStart
21-28
8
Master
See SMBus Address Mode table
29
1
Slave
Ack (Acknowledge)
30-37
8
Slave
Byte count, N (block read back of N
bytes)
38
1
Master
Ack (Acknowledge)
39-46
8
Slave
first data byte (Offset data byte)
47
1
Master
Ack (Acknowledge)
48-55
8
Slave
2nd data byte
Ack (Acknowledge)
:
Master
Ack (Acknowledge)
Slave
Nth data byte
Notacknowledge
Master
Stop
INDEX BYTE WRITE
Setting bit[11:18] = starting address, bit[20:27] = 01h.
INDEX BYTE READ
Setting bit[11:18] = starting address. After reading back the first data byte,
masterissuesStopbit.
NOTE:
(1) The SA_2 pin shares functionality with PLL_bypass# mode
setting. The shared function restricts the device addresses that
correspond to SA_2 =0 as setting the buffer device in
PLL_Bypass#.
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PDF描述
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