KSZ8895MQ_12 MICREL [Micrel Semiconductor], KSZ8895MQ_12 Datasheet - Page 15

• Manufacturer Part Number: KSZ8895MQ_12
• Description: Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface
• Manufacturer: MICREL [Micrel Semiconductor]

Micrel, Inc.
Pin Description (Continued)
March 2012
Pin Number
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
PMRXDV/PMCRSDV
PMTXC/PMREFCLK
PWRDN_N
Pin Name
PMTXEN
PMTXER
PMTXD3
PMTXD2
PMTXD1
PMTXD0
PMRXD3
PMRXD2
INTR_N
PMRXC
FXSD4
VDDIO
GNDD
GNDD
VDDC
NC
NC
NC
NC
NC
NC
NC
Type
IPD/O
IPD/O
IPD/O
OPU
GND
GND
IPD
IPU
IPD
IPD
IPD
IPD
IPD
IPD
NC
NC
NC
NC
NC
NC
NC
I/O
I/O
P
P
(1)
Port
4
5
5
5
5
5
5
5
5
5
5
5
Pin Function
FMQ: Fiber signal detect pin for Port 4.
MQ/RQ: no connection.
No connect.
No connect.
No connect.
No connect.
No connect.
No connect.
No connect.
Full-chip power down. Active low.
Interrupt. This pin is Open-Drain output pin.
Digital ground.
1.2V digital core V
PHY[5] MII/RMII transmit enable.
MQ/FMQ: PHY[5] MII transmit bit 3.
RQ: no connection for RMII.
MQ/FMQ: PHY[5] MII transmit bit 2.
RQ: no connection for RMII.
PHY[5] MII/RMII transmit bit 1.
PHY[5] MII/RMII transmit bit 0.
MQ/FMQ: PHY[5] MII transmit error. RQ: no connection for RMII.
MQ/FMQ: Output PHY[5] MII transmit clock
RQ: Input PHY[5] RMII reference clock, 50MHz 50ppm, the
50MHz clock comes from PMRXC Pin 60.
Digital ground.
3.3V, 2.5V or 1.8V digital V
MQ/FMQ: Output PHY[5] MII receive clock.
RQ: Output PHY[5] RMII reference clock, this clock is used when
opposite doesn’t provide RMII 50MHz clock or the system doesn’t
provide an external 50MHz clock for the P5-RMII interface.
MQ/FMQ: PMRXDV is for PHY[5] MII receive data valid.
RQ: PMCRSDV is for PHY[5] RMII
Valid Output.
MQ/FMQ: PHY[5] MII receive bit 3.
RQ: no connection for RMII.
Strap option:
PD (default) = enable flow control.
PU = disable flow control.
MQ/FMQ: PHY[5] MII receive bit 2.
RQ: no connection for RMII.
Strap option:
PD (default) = disable back pressure.
PU = enable back pressure.
15
(2)
DD
.
DD
for digital I/O circuitry.
Carrier Sense/Receive Data
KSZ8895MQ/RQ/FMQ
M9999-032612-1.5