ksz8893mqlam Micrel Semiconductor, ksz8893mqlam Datasheet - Page 17

• Manufacturer Part Number: ksz8893mqlam
• Description: Integrated 3-port 10/100 Managed Switch With Phys
• Manufacturer: Micrel Semiconductor

December 2007
Note:
1. I = Input.
Pin Number
100
101
102
103
Pin Name
PS1
PS0
UNUSED
UNUSED
Type
I
I
I
I
(1)
17
Description
Serial bus configuration pins to select mode of access to
KSZ8893MBL internal registers.
[PS1, PS0] = [0, 0] — I
(If EEPROM is not detected, the KSZ8893MBL will be
configured with the default values of its internal registers and
the values of its strap-in pins.)
[PS1, PS0] = [0, 1] — I
The external I
The KSZ8893MBL device addresses are:
1011_1111
1011_1110
[PS1, PS0] = [1, 0] — SPI slave mode
[PS1, PS0] = [1, 1] – SMI-mode
In this mode, the KSZ8893MBL provides access to all its
internal 8-bit registers through its MDC and MDIO pins.
Note:
When (PS1, PS0) ≠ (1,1), the KSZ8893MBL provides access
to its 16-bit MIIM registers through its MDC and MDIO pins.
Unused pins – externally pull up for normal operation
Interface Signals
SPIQ
SCL
SDA
SPIS_N
Interface Signals
SPIQ
SCL
SDA
SPIS_N
Interface Signals
SPIQ
SCL
SDA
SPIS_N
2
<write>
<read>
C master will drive the SCL clock.
Type
O
O
I/O
I
Type
O
I
I/O
I
Type
O
I
I
I
2
2
C master (EEPROM) mode
C slave mode
Description
Not used (tri-stated)
I
I
Not used
Description
Not used (tri-stated)
I
I
Not used
Description
SPI data out
SPI clock
SPI data In
SPI chip select
2
2
2
2
C clock
C data I/O
C clock
C data I/O
M9999-121007-1.5