KSZ8893MQLI Datasheet, PDF (17/116 Pages) Micrel Semiconductor – Integrated 3-Port 10/100 Managed Switch with PHYs

Micrel, Inc.
Pin Number
100
101
Pin Name
PS1
PS0
102
103
Note:
1. I = Input.
UNUSED
UNUSED
Type ⁽¹⁾
I
I
I
I
KSZ8893MQL/MBL
Description
Serial bus configuration pins to select mode of access to
KSZ8893MQL internal registers.
[PS1, PS0] = [0, 0] — I²C master (EEPROM) mode
(If EEPROM is not detected, the KSZ8893MQL will be
configured with the default values of its internal registers and
the values of its strap-in pins.)
Interface Signals
SPIQ
SCL
SDA
SPIS_N
Type
O
O
I/O
I
Description
Not used (tri-stated)
I²C clock
I²C data I/O
Not used
[PS1, PS0] = [0, 1] — I²C slave mode
The external I²C master will drive the SCL clock.
The KSZ8893MQL device addresses are:
1011_1111 <read>
1011_1110 <write>
Interface Signals Type Description
SPIQ
SCL
SDA
O
Not used (tri-stated)
I
I²C clock
I/O
I²C data I/O
SPIS_N
I
Not used
[PS1, PS0] = [1, 0] — SPI slave mode
Interface Signals Type Description
SPIQ
O
SPI data out
SCL
I
SPI clock
SDA
I
SPI data In
SPIS_N
I
SPI chip select
[PS1, PS0] = [1, 1] – SMI-mode
In this mode, the KSZ8893MQL provides access to all its
internal 8-bit registers through its MDC and MDIO pins.
Note:
When (PS1, PS0) ≠ (1,1), the KSZ8893MQL provides access
to its 16-bit MIIM registers through its MDC and MDIO pins.
Unused pins – externally pull up for normal operation
February 2010
17
M9999-021110-1.6