- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367854 > PDI1394P21 (NXP Semiconductors N.V.) 3-port Physical Layer Interface(三端口物理層接口) PDF資料下載
參數(shù)資料
| 型號： | PDI1394P21 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 3-port Physical Layer Interface(三端口物理層接口) |
| 中文描述： | 三端口物理層接口（三端口物理層接口） |
| 文件頁數(shù)： | 26/28頁 |
| 文件大?。?/td> | 148K |
| 代理商： | PDI1394P21 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁當(dāng)前第26頁第27頁第28頁
Philips Semiconductors
Objective specification
PDI1394P21
3-port physical layer interface
1999 Jul 09
26
The sequence of events for a cancelled/null packet transmission is
as follows:
Transmit operation initiated. PHY asserts grant on the CTL lines
followed by idle to hand over control of the interface to the link.
Optional Idle cycle. The link may assert at most one idle cycle
preceding assertion of hold. This idle cycle is optional; the link is
not required to assert idle preceding Hold.
Optional Hold cycles. The link may assert Hold for up to 47 cycles
preceding assertion of idle. These hold cycle(s) are optional; the
link is not required to assert hold preceding Idle.
Null transmit termination. The null transmit operation is terminated
by the link asserting two cycles of idle on the CTL lines and then
releasing the interface and returning control to the PHY. Note that
the link may assert Idle for a total of 3 consecutive cycles if it
asserts the optional first idle cycle but does not assert hold. It is
recommended that the link assert 3 cycles of Idle to cancel a
packet transmission if no hold cycles are asserted. This ensures
that either the link or PHY controls the interface in all cycles.
After regaining control of the interface, the PHY shall assert at
least one cycle of Idle before any subsequent status transfer,
receive operation, or transmit operation.
SYSCLK
(a)
CTL0, CTL1
D0–D7
00
00
01
SV01763
Link Controls Ctl and D
PHY High-impedance Ctl and D Outputs
00
11
00
(b)
(c)
(d)
(e)
00
00
00
00
Figure 15.
Cancelled/Null Packet Transmission
19.0
The PC0–PC2 terminals are programmed to set the default value of the power-class indicated in the pwr field (bits 21–23) of the transmitted
self-ID packet. Descriptions of the various power-classes are given in Table 18. The default power-class value is loaded following a hardware
reset, but is overridden by any value subsequently loaded into the Pwr_Class field in register 4.
POWER-CLASS PROGRAMMING
Table 18. Power Class Descriptions
PC0–PC2
DESCRIPTION
000
Node does not need power and does not repeat power.
001
Node is self powered, and provides a minimum of 15 W to the bus.
010
Node is self powered, and provides a minimum of 30 W to the bus.
011
Node is self powered, and provides a minimum of 45 W to the bus.
100
Node may be powered from the bus and is using up to 3 W.
101
Node is powered from the bus and uses up to 3 W. No additional power is needed to enable the link.
110
Node is powered from the bus and uses up to 3 W. An additional 3 W is needed to enable the link.
111
Node is powered from the bus and uses up to 3 W. An additional 7 W is needed to enable the link.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PDI1394P22 | 3-port Physical Layer Interface(三端口物理層接口) |
| PDI1394P24 | 2-port 400 Mbps physical layer interface(2端口 400 Mbps物理層接口) |
| PDI40C1D00 | |
| PDI40C1300 | |
| PDI40C130R | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PDI1394P21BE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:3-port physical layer interface |
| PDI1394P22 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:3-port physical layer interface |
| PDI1394P22BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:3-port physical layer interface |
| PDI1394P23 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-port/1-port 400 Mbps physical layer interface |
| PDI1394P23BD | 功能描述:IC IEEE 1394 LINK CTRLR 64LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 應(yīng)用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。