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LAN91C111 데이터시트(PDF) 27 Page - Microchip Technology

부품명 LAN91C111
상세설명  10/100 Non-PCI Ethernet Single Chip MAC PHY
PDF  125 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN91C111 데이터시트(HTML) 27 Page - Microchip Technology

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 2011-2016 Microchip Technology Inc.
DS00002276A-page 27
LAN91C111
7.7.7.3
Transmit Level Adjust
The transmit output current level is derived from an internal reference voltage and the external resistor on RBIAS pin.
The transmit level can be adjusted with either (1) the external resistor on the RBIAS pin, or (2) the four transmit level
adjust bits in the PHY Ml serial port Configuration 1 register as shown in Table 7-2. The adjustment range is approxi-
mately -14% to +16% in 2% steps.
G57
-1.0
H48
0.7
I67
0.6
J89
0
K
74
-0.55
L
73
-0.55
M61
0
N85
1.0
O100
0.4
P
110
0.75
Q
111
0.15
R111
0
S111
-0.15
T110
-1.0
U100
-0.3
V110
-0.7
W90
-0.7
TABLE 7-2:
TRANSMIT LEVEL ADJUST
TLVL[3:0]
Gain
0000
1.16
0001
1.14
0010
1.12
0011
1.10
0100
1.08
0101
1.06
0110
1.04
0111
1.02
Reference
Time (NS) Internal MAU
Voltage (V)



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