參數(shù)資料
型號(hào): RTL8139D(L)
英文描述: RTL8139D(L) Specification
中文描述: RTL8139D(長(zhǎng))規(guī)格
文件頁(yè)數(shù): 9/58頁(yè)
文件大?。?/td> 616K
代理商: RTL8139D(L)
RTL8100B(L)
2001-11-9
Rev.1.41
9
4.6 Attachment Unit Interface
Symbol
TXD+
TXD-
RXIN+
RXIN-
X1
X2
Type
O
O
I
I
I
O
Pin No
72
71
68
67
61
60
Description
100/10BASE-T transmit (Tx) data.
100/10BASE-T receive (Rx) data.
25 MHz crystal/OSC. input.
Crystal Feedback Output:
This output is used in crystal connection only.
It must be left open when X1 is driven with an external 25 MHz oscillator.
4.7 Test and Other Pins
Symbol
RTT3
RTSET
Type
TEST
I/O
Pin No
63
65
Description
Chip test pin
This pin must be pulled low by a resistor. Please refer to the application
circuit for the correct value.
Use this pin and an external PNP type transistor to generate +2.5V for
the RTL8100B(L).
Reserved
VCTRL
Analog
55
NC
-
7,35,40, 52,53,
54, 69, 76, 78
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