
Micrel, Inc.
KSZ8864RMN
April 2012
18
M9999-043012-1.5
Pin for Strap-In Options (Continued)
Pin Number
Pin Name
Type
(1)
Port
Pin Function
(2)
Serial bus configuration pin.
For this case, if the EEPROM is not present, the Switch will start itself with the
PS[1.0] = 00 default register values.
Pin Configuration
Serial Bus Configuration
PS[1.0]=00
I
2C Master Mode for EEPROM
PS[1.0]=01
SMI Interface Mode
PS[1.0]=10
SPI Slave Mode for CPU Interface
59
PS1
IPD
PS[1.0]=11
Factory Test Mode (BIST)
Notes:
1.
P = Power supply.
I = Input.
O = Output.
I/O = Bidirectional.
GND = Ground.
IPU = Input w/internal pull-up.
IPD = Input w/internal pull-down.
IPD/O = Input w/internal pull-down during reset, output pin otherwise.
IPU/O = Input w/internal pull-up during reset, output pin otherwise.
NC = No connect.
2.
PU = Strap pin pull-up.
PD = Strap pull-down.
OTRI = Output tristated.