KS8993M Micrel Inc, KS8993M Datasheet - Page 12

• Manufacturer Part Number: KS8993M
• Description: IC SWITCH 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8993M

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII/SNI
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 1.89/3.465V
• Operating Supply Voltage (min): 1.71/3.135V
• Power Dissipation: 800mW
• Supply Current: 0.1/0.19A
• Operating Temperature Classification: Commercial
• Data Rate: 100Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1013 - BOARD EVAL EXPERIMENT KS8993M
• Lead Free Status / RoHS Status: Not Compliant, Lead free / RoHS Compliant

Micrel, Inc.
April 2005
Note:
1. P = Power supply.
Pin Number
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Gnd = Ground.
I = Input.
O = Output.
Ipu = Input w/ internal pull-up.
Ipd = Input w/ internal pull-down.
Pin Name
RXP1
RXM1
AGND
TXP1
TXM1
VDDATX
VDDARX
RXM2
RXP2
AGND
TXM2
TXP2
VDDA
AGND
TEST1
TEST2
ISET
AGND
VDDAP
AGND
X1
X2
RST_N
BPEN
SMAC
Type
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
(1)
12
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 V
3.3V analog V
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 V
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 V
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
DD
DD
DD
DD
for PLL
KS8993M/ML/MI
M9999-041205