ksz8893mqlam Micrel Semiconductor, ksz8893mqlam Datasheet - Page 12

• Manufacturer Part Number: ksz8893mqlam
• Description: Integrated 3-port 10/100 Managed Switch With Phys
• Manufacturer: Micrel Semiconductor

December 2007
Note:
1. P = Power supply.
Pin Number
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Gnd = Ground.
O = Output.
Ipu = Input w/ internal pull-up.
Ipd = Input w/ internal pull-down.
Opu = Output w/ internal pull-up.
Opd = Output w/ internal pull-down.
Pin Name
NC
NC
NC
ADVFC
P2ANEN
P2SPD
P2DPX
P2FFC
NC
NC
NC
P2LED3
DGND
VDDCO
LEDSEL1
NC
P1LED3
Type
Ipd
Ipd
Ipu
Ipu
Ipu
Ipd
Ipd
Ipd
Opu
Ipd
Ipd
Opd
Gnd
P
Ipd
O
Opd
(1)
12
Description
No connect
No connect
No connect
1 = advertise the switch’s flow control capability via auto-
negotiation.
0 = will not advertise the switch’s flow control capability via
auto-negotiation.
1 = enable auto-negotiation on port 2
0 = disable auto-negotiation on port 2
1 = force port 2 to 100BT if P2ANEN = 0
0 = force port 2 to 10BT if P2ANEN = 0
1 = port 2 default to full duplex mode if P2ANEN = 1 and
auto-negotiation fails. Force port 2 in full duplex mode if
P2ANEN = 0.
0 = port 2 default to half duplex mode if P2ANEN = 1 and
auto-negotiation fails. Force port 2 in half duplex mode if
P2ANEN = 0.
1 = always enable (force) port 2 flow control feature
0 = port 2 flow control feature enable is determined by auto-
negotiation result.
No connect
No connect
No connect
Port 2 LED indicator
Note: Internal pull-down is weak; it will not turn ON the LED.
See description in pin 4.
Digital ground
1.2V digital VDD
Provides V
(pin 63), V
57). It is recommended the pin should be connected to 3.3V
power rail by a 100ohm resistor for the internal LDO
application.
LED display mode select
See description in pins 1 and 4.
No connect
Port 1 LED indicator
Note: An external 1K pull-down is needed on this pin if it is
connected to a LED. The 1K resistor will not turn ON the
LED.
See description in pin 1.
DDC
OUT_1V2
(pins 91 and 123), and V
to KSZ8893MBL’s input power pins: V
DDA
M9999-121007-1.5
(pins 38, 43, and
DDAP