Datasheet

2017 Microchip Technology Inc. DS00002335B-page 7
KSZ8863MLL/FLL/RLL
25 SMRXDV3 Ipu/O
Switch MII/RMII receive data valid
Strap option: Force duplex mode (P1DPX)
PU = Port 1 default to full-duplex mode if P1ANEN = 1 and auto-negotia-
tion fails. Force port 1 in full-duplex mode if P1ANEN = 0.
PD = Port 1 default to half-duplex mode if P1ANEN = 1 and auto-negotia-
tion fails. Force port 1 in half-duplex mode if P1ANEN = 0.
26
SMRXD33/
REFCLKO_3
Ipu/O
MLL/FLL: Switch MII receive data bit 3
RLL: Output reference clock in RMII mode.
Strap option: enable auto-negotiation on port 2 (P2ANEN)
PU = Enable
PD = Disable
27 SMRXD32 Ipu/O
Switch MII receive data bit 2
Strap option: Force the speed on port 2 (P2SPD)
PU = Force port 2 to 100BT if P2ANEN = 0
PD = Force port 2 to 10BT if P2ANEN = 0
28 SMRXD31 Ipu/O
Switch MII/RMII receive data bit 1
Strap option: Force duplex mode (P2DPX)
PU = Port 2 default to full-duplex mode if P2ANEN = 1 and auto-negotia-
tion fails. Force port 2 in full-duplex mode if P2ANEN = 0.
PD = Port 2 set to half-duplex mode if P2ANEN = 1 and auto-negotiation
fails. Force port 2 in half-duplex mode if P2ANEN = 0.
29 SMRXD30 Ipu/O
Switch MII/RMII receive data bit 0
Strap option: Force flow control on port 2 (P2FFC)
PU = Always enable (force) port 2 flow control feature.
PD = Port 2 flow control feature enable is determined by auto-negotiation
result.
30 SMRXC3 I/O
Switch MII receive clock.
Output in PHY MII mode
Input in MAC MII mode
31 GND GND Digital ground
32 VDDC P 1.8V digital core power input from VDDCO (pin 42)
33 SCOL3 Ipu/O Switch MII collision detect
34 SCRS3 Ipu/O Switch MII carrier sense
35 INTRN Opu
Interrupt
Active-low signal to host CPU to indicate an interrupt status bit is set when
lost link. Refer to register 187 and 188.
36 SCL_MDC I/O
SPI Slave mode/I
2
C Slave mode: clock input
I
2
C Master mode: clock output
MIIM clock input
37 SDA_MDIO Ipu/O
SPI Slave mode: serial data input
I
2
C Master/Slave mode: serial data input/output
MIIM: Data input/output
Note: An external pull-up is needed on this pin when it is in use.
38 SPIQ Ipd/O
SPI Slave mode: serial data output
Note: An external pull-up is needed on this pin when it is in use.
Strap option: Force flow control on port 1 (P1FFC)
PU = Always enable (force) port 1 flow control feature
PD = Port 1 flow control feature enable is determined by auto-negotiation
result.
TABLE 2-1: SIGNALS (CONTINUED)
Pin
Number
Pin
Name
Type
Note 2-1
Description