KSZ8775CLX Datasheet, PDF (7/132 Pages) Microchip Technology – Integrated 5–Port 10/100 Managed Ethernet Switch with Port 4 RMII and Port 5 RGMII/MII/RMII Interfaces

TABLE 2-1:
Num Pins
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
SIGNALS (CONTINUED)
Pin Name
RXP1
RXM1
TXP1
TXM1
RXP2
RXM2
TXP2
TXM2
VDDAT
RXP3
RXM3
TXP3
TXM3
NC
NC
GNDA
Type
I
I
O
O
I
I
O
O
P
I
I
O
O
NC
NC
GND
22
INTR_N
OPU
23
NC
NC
24
TXD4_1
IPD
25
LED3_1
IPU/O
26
TXD4_0
27
LED3_0
28
VDD12D
29
GNDD
IPD
IPU/O
P
GND
KSZ8775CLX
Port
1
1
1
1
2
2
2
2
3
3
3
3
4
3
4
3
Pin Description
Port 1 physical receive signal + (differential).
Port 1 physical receive signal - (differential).
Port 1 physical transmit signal + (differential).
Port 1 physical transmit signal - (differential).
Port 2 physical receive signal + (differential).
Port 2 physical receive signal - (differential).
Port 2 physical transmit signal + (differential)
Port 2 physical transmit signal - (differential).
3.3V or 2.5V analog power
Port 3 physical receive signal + (differential).
Port 3 physical receive signal - (differential).
Port 3 physical transmit signal + (differential).
Port 3 physical transmit signal – (differential).
No connect
No connect
Analog ground
Interrupt. Active low.
This pin is an open-drain output pin.
Note: an external pull-up resistor is needed on
this pin when it is in use.
No connect
RMII: Port 4 RMII transmit bit [1].
Port 3 LED Indicator 1.
See global Register 11 bits [5:4] for details.
Strap option: Switch Port 5 GMAC5 interface
mode select by
LED3[1:0]
00 = MII for SW5-MII
01 = RMII for SW5-RMII
10 = Reserved
11 = RGMII for SW5-RGMII (default)
RMII: Port 4 RMII transmit bit [0]
Port 3 LED Indicator 0.
See global Register 11 bits [5:4] for details.
Strap option: see LED3_1
1.2V core power.
Digital ground.
 2015 Microchip Technology Inc.
DS00002129C-page 7