參數(shù)資料
型號: LXT970A
廠商: Intel Corp.
英文描述: Dual-Speed Fast Ethernet Transceiver
中文描述: 雙速度快速以太網(wǎng)收發(fā)器
文件頁數(shù): 46/74頁
文件大?。?/td> 1061K
代理商: LXT970A
LXT970A
Dual-Speed Fast Ethernet Transceiver
46
Datasheet
Figure 21. Typical Interface Circuitry
LXT970A
25.0 MHz
C1
C2
XI
TX_EN
TPIN
TPIP
RJ45
T
RBIAS
GNDD
TXD<4:0>
TX_CLK
TX_ER
COL
RX_DV
RX_ER
RX_CLK
RXD<4:0>
CRS
MDIO
FDS/MDINT
MDC
MII
Data
I/F
+5 V
VCCD
XO
TPON
50
1%
TPOP
50
1%
50
50
50
75
50
50
TREF
VCCIO
+3.3V
or
+5V
GNDIO
50
6
5
4
3
2
1
8
7
VCCT
GNDT
VCCA
FIBON
191
W
FIBOP
FIBIN
FIBIP
191
W
69
W
69
W
Fiber Txcvr
T
.01
m
F
130
W
130
W
80
W
80
W
+5 V
.01
m
F
TD
TD
RD
RD
3
2
1
GNDA
TEST
LEDS
LEDR
LEDT
LEDL
LEDC
330
W
330
W
330
W
330
W
330
W
+5 V
75
VCCR
GNDR
.01
μ
F
.01
μ
F
MF<4:0>
CFG<1:0>
RESET
PWRDWN
H/W
Control
I/F
FDE
TRSTE
MDDIS
MII
Control
I/F
.01
μ
F
.01
μ
F
0.001
μ
F/2kV
.01
μ
F
.01
μ
F
22.1k
1%
.01
μ
F
.01
m
F
10
μ
F
GNDD
GNDD
GNDA
GNDA
GNDA
GNDA
VCCR
GNDD
VCCD
Ferrite Bead
+5 V
10
μ
F
VCCA
GNDA
10
μ
F
+
+
4
VCCT
+5 V
+
.01
m
F
50
1%
50
1%
.01
μ
F
GNDR
5
6
7
55
55
55
55
55
55
55
1. Refer to
Table 19
and
Table 20
for crystals.
2. Refer to
Table 18
for magnetics.
3. Refer to fiber transceiver manufacturers recommendations for termination circuitry. Suitable fiber transceivers include:
HFBR-5103 and HFBR-5105.
4. Bypassing to chassis ground (if available) provides additional EMI shielding.
5. If the fiber interface is not used, FIBIN, FIBIP, FIBON, and FIBOP may be left unconnected.
6. Placement of this cap should be verified for each application. This cap typically reduces error rates at long line lengths but
is implementation specific.
7. If bit 17.3 = 0, series terminations resistors are recommended for all MII outputs. The proper value is application specific.
If bit 17.3 = 1, termination resistors are not required.
相關(guān)PDF資料
PDF描述
LXT970 Fast Ethernet Transceiver
LXT970QC Fast Ethernet Transceiver
LXT971A 3.3V Dual-Speed Fast Ethernet PHY Transceiver
LXT972A 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet
LXT972ALC 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LXT970AQC 制造商:LEVEL ONE 功能描述: 制造商:LEVELONE 功能描述: 制造商: 功能描述: 制造商:LEVEL1 功能描述:
LXT970AQC.B11 制造商:Intel 功能描述:
LXT970ATC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm
LXT970QC 制造商:LEVEL ONE 功能描述: 制造商:Level One 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP 制造商:Level One Communications 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP
LXT971A 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:3.3V Dual-Speed Fast Ethernet PHY Transceiver