KSZ8993M データシートの表示（PDF） - Micrel
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コンポーネント説明
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KSZ8993M Datasheet PDF : 86 Pages
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Micrel, Inc.
Pin Number
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
Pin Name
RXP1
RXM1
AGND
TXP1
TXM1
VDDATX
VDDARX
RXM2
RXP2
AGND
TXM2
TXP2
VDDA
AGND
TEST1
TEST2
ISET
AGND
VDDAP
AGND
X1
X2
67
RST_N
68
BPEN
69
SMAC
Note:
1. P = Power supply.
Gnd = Ground.
I = Input.
O = Output.
Ipu = Input w/ internal pull-up.
Ipd = Input w/ internal pull-down.
Type (1)
I/O
I/O
Gnd
I/O
I/O
P
P
I/O
I/O
Gnd
I/O
I/O
P
Gnd
I
Ipu
O
Gnd
P
Gnd
I
O
Ipu
Ipd
Ipd
KSZ8993M/ML
Description
Physical receive or transmit signal (+ differential)
Physical receive or transmit signal (– differential)
Analog ground
Physical transmit or receive signal (+ differential)
Physical transmit or receive signal (– differential)
3.3V analog VDD
3.3V analog VDD
Physical receive or transmit signal (– differential)
Physical receive or transmit signal (+ differential)
Analog ground.
Physical transmit or receive signal (– differential)
Physical transmit or receive signal (+ differential)
1.8 analog VDD
Analog ground
Factory test pin - float for normal operation
Factory test pin - float or pull-up for normal operation
Set physical transmit output current.
Pull-down this pin with a 3.01K 1% resistor to ground.
Analog ground
1.8V analog VDD for PLL
Analog ground.
25MHz crystal/oscillator clock connections
Pins (X1, X2) connect to a crystal. If an oscillator is used, X1
connects to a 3.3V tolerant oscillator and X2 is a no connect.
Note: Clock is +/- 50ppm for both crystal and oscillator.
Hardware reset pin (active low)
Half-duplex backpressure
1 = enable
0 = disable
Special Mac-mode
In this mode, the switch will do faster back-offs than normal.
1 = enable
0 = disable
October 2008
13
M9999-020606
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