參數(shù)資料
型號(hào)： UPD72850A
廠商： NEC Corp.
英文描述： IEEE1394 400Mbps PHY
中文描述： IEEE1394連接400Mbps的物理層
文件頁(yè)數(shù)： 32/48頁(yè)
文件大?。?/td> 290K
代理商： UPD72850A
Data Sheet S14452EJ1V0DS00
32
μ
PD72850A
Figure 4-8. Link Cancel Timing (After Hold)
00
11
00
ZZ
ZZ
ZZ
ZZ
ZZ
00
00
00
00
ZZ
ZZ
ZZ
ZZ
ZZ
00
ZZ
ZZ
ZZ
00
01
01
00
00
ZZ
ZZ
ZZ
ZZ
00
00
00
00
00
ZZ
PHY CTL0,CTL1
PHY D0-D7
Link CTL0,CTL1
Link D0-D7
4.8 Receive
This section shows the operation when the packet is received from the serial bus.
When the
μ
PD72850A detects DATA_PREFIX on the serial bus, it asserts receive to CTL and all of the D pins
assume the logic value of 1.
The
μ
PD72850A shows the speed code of the transfer rate ahead of the packet using bits D0-D7. Transmitting
the speed code with the speed signal is the protocol of the PHY/Link interface. The speed code is not included in
the CRC calculation.
The
μ
PD72850A continues to assert Receive to CTL until the packet is finally transmitted.
Idle is asserted to CTL, indicating completion of the packet transmission.
Figure 4-9. Receive Timing
00
10
10
10
10
10
00
00
FF
FF
D0
D1
D
n
00
PHY CTL0,CTL1
(Binary)
PHY D0-D7
(Hex)
10
SP
00
00
The packet transfer rate of the serial bus depends on the topology of the bus. The
μ
PD72850A checks if the node
can receive at the faster transfer rate. At this time, DATA_PREFIX
→
DATA_END is transmitted to the
μ
PD72850A.
After DATA_PREFIX is transmitted to the Link, Receive from the serial bus is completed, asserting Idle.
Table 4-15 shows the speed code encoding.
Table 4-15. Speed Encoding
D0-D7
Data rate
Transmitted
Observed
00000000
00xxxxxx
S100
01000000
0100xxxx
S200
01010000
01010000
S400
11111111
11xxxxxxxx
Data Prefix
相關(guān)PDF資料
PDF描述
UPD72850AGK-9EU Circular Connector; No. of Contacts:56; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-4 RoHS Compliant: No
uPD750066CU 4-BIT SINGLE-CHIP MICROCONTROLLERS
uPD750068GT 4-BIT SINGLE-CHIP MICROCONTROLLERS
uPD750068GTA 4-BIT SINGLE-CHIP MICROCONTROLLERS
uPD750066GTA CONNECTOR ACCESSORY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD74HC04C 制造商:Panasonic Industrial Company 功能描述:IC
UPD750068GT-396 制造商:Renesas Electronics Corporation 功能描述:
UPD7507C189 制造商:Panasonic Industrial Company 功能描述:IC
UPD7508CU265 制造商:Panasonic Industrial Company 功能描述:IC
UPD75208 制造商:Panasonic Industrial Company 功能描述:IC
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*