參數(shù)資料
型號(hào)： UPD72874
廠商： NEC Corp.
英文描述： IEEE1394 OHCI 1.1 COMPLIANT 3PORT PHY-LINK 1-CHIP HOST CONTROLLER
中文描述： IEEE1394連接的OHCI 1.1標(biāo)準(zhǔn)3PORT物理層鏈路1 -芯片的主機(jī)控制器
文件頁(yè)數(shù)： 10/40頁(yè)
文件大小： 297K
代理商： UPD72874
Preliminary Data Sheet S15306EJ2V0DS
10
μ
PD72874
1.2 PHY Signals: (20 pins)
Name
I/O
Pin No.
I
OL
Volts(V)
Function
Block *
TpA0p
I/O
101
-
-
Port-1 Twisted Pair A Positive Input/Output
Note 1
PHY Analog
TpA0n
I/O
100
-
-
Port-1 Twisted Pair A Negative Input/Output
Note 1
PHY Analog
TpB0p
I/O
99
-
-
Port-1 Twisted Pair B Positive Input/Output
Note 1
PHY Analog
TpB0n
I/O
98
-
-
Port-1 Twisted Pair B Negative Input/Output
Note 1
PHY Analog
TpA1p
I/O
105
-
-
Port-2 Twisted Pair A Positive Input/Output
Note 1
PHY Analog
TpA1n
I/O
104
-
-
Port-2 Twisted Pair A Negative Input/Output
Note 1
PHY Analog
TpB1p
I/O
103
-
-
Port-2 Twisted Pair B Positive Input/Output
Note 1
PHY Analog
TpB1n
I/O
102
-
-
Port-2 Twisted Pair B Negative Input/Output
Note 1
PHY Analog
TpA2p
I/O
110
-
-
Port-3 Twisted Pair A Positive Input/Output
Note 1
PHY Analog
TpA2n
I/O
109
-
-
Port-3 Twisted Pair A Negative Input/Output
Note 1
PHY Analog
TpB2p
I/O
108
-
-
Port-3 Twisted Pair B Positive Input/Output
Note 1
PHY Analog
TpB2n
I/O
107
-
-
Port-3 Twisted Pair B Negative Input/Output
Note 1
PHY Analog
CPS
I
93
-
-
Cable Power Status Input
Note2
PHY Digital
TpBias0
O
96
-
-
Port-1 Twisted Pair Bias Voltage Output
Note 1
PHY Analog
TpBias1
O
97
-
-
Port-2 Twisted Pair Bias Voltage Output
Note 1
PHY Analog
TpBias2
O
111
-
-
Port-3 Twisted Pair Bias Voltage Output
Note 1
PHY Analog
RI0
-
91
-
-
Resistor0 for Reference Current Setting
Note 3
PHY Analog
RI1
-
92
-
-
Resistor1 for Reference Current Setting
Note 3
PHY Analog
XI
I
87
-
-
X’tal XI
PHY Analog
XO
O
88
-
-
X’tal XO
PHY Analog
Notes 1.
If unused port, please refer to
4.1.4 Unused Ports
.
2.
Please refer to
4.1.3 CPS
.
3.
Please refer to
4.5 RI0, RI1
.
Remark
*: If the PHY Digital pin is pulled up, it should be connected to P_DV
DD
.
If the PHY Analog pin is pulled up, it should be connected to P_AV
DD
.
1.3 PHY Control Signals: (4 pins)
Name
I/O
Pin No.
I
OL
Volts(V)
Function
Block *
PC0 to PC2
I
70 to 72
-
3.3
Power Class Input
Note 1
PHY Digital
P_RESET
I
81
-
-
PHY Power on Reset Input
Note 2
PHY Digital
Notes 1.
Please refer to
4.3 PC0 to PC2
.
2.
Please refer to
4.4 P_RESET
.
Remark
*: If the PHY Digital pin is pulled up, it should be connected to P_DV
DD
.
1.4 PCI/Cardbus Select Signal: (1 pin)
Name
I/O
Pin No.
I
OL
Volts(V)
Function
Block *
CARD_ON
I
119
-
3.3
PCI/CardBus Select
1:Cardbus mode
0:PCI bus mode
Link
Remark
*: If the Link pin is pulled up, it should be connected to L_V
DD
.
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