KS8995MAL Micrel Inc, KS8995MAL Datasheet - Page 38

• Manufacturer Part Number: KS8995MAL
• Description: IC SWITCH 10/100 5PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8995MAL

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• For Use With: 576-1017 - BOARD EVAL EXPERIMENT KS8995M
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

KS8995MA
MII Management Interface (MIIM)
A standard MIIM interface is provided for all five PHY devices in the KS8995MA. An external device with MDC/MDIO capability
is able to read PHY status or to configure PHY settings. For details on the MIIM interface standard please reference the IEEE
802.3 specification (section 22.2.4.5). The MIIM interface does not have access to all the configuration registers in the
KS8995MA. It can only access the standard MII registers. See “MIIM Registers.” The SPI interface, on the other hand, can
be used to access the entire KS8995MA feature set.
M9999-051305
SPIS_N
SPIS_N
SPIS_N
SPIS_N
SPIC
SPID
SPIQ
SPIC
SPID
SPIQ
SPIC
SPID
SPIQ
SPIC
SPID
SPIQ
D7
X
X
D7
X
D6
X
0
D6
0
D5
0
X
D5
READ COMMAND
Byte 2
0
D4
0
X
D4
Byte 2
WRITE COMMAND
0
D3
0
X
D4
0
D2
X
D2
0
0
D1
X
D1
0
0
Figure 10. SPI Multiple Write
Figure 11. SPI Multiple Read
D0
1
X
D0
1
D7
1
X
D7
0
A7 A6 A5 A4 A3 A2 A1 A0
D6
X
D6
A7 A6 A5 A4 A3 A2 A1 A0
D5
X
D5
READ ADDRESS
Byte 3 ...
38
Byte 3 ...
D4
X
D4
WRITE ADDRESS
D3
X
D3
D2
X
D2
D1
X
D1
D0
X
D0
D7
X
D7
X
D7
D7
D6
X
D6
X
D6
D6
D5
X
D5
X
Byte 1
D5
D5
Byte N
D4
X
D4
X
D4
D4
Byte N
Byte 1
D3
X
D3
X
D3
D3
D2
X
D2
X
D2
D2
D1
X
D1
X
D1
D1
D0
X
D0
X
D0
D0
Micrel, Inc.
May 2005