KS8993F Micrel Inc, KS8993F Datasheet - Page 45

• Manufacturer Part Number: KS8993F
• Description: IC CONV MED 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8993F

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII/SNI
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 1.89/3.465V
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: KS8993F-EVAL - EVAL KIT EXPERIMENTAL KS8993F
• Lead Free Status / RoHS Status: Not Compliant, Lead free / RoHS Compliant

The following four figures illustrate the SPI data cycles for “Write”, “Read”, “Multiple Write” and “Multiple Read”. The
read data is registered out of SPIQ on the falling edge of SPIC, and the data input on SPID is registered on the rising
edge of SPIC.
Micrel, Inc.
June 2009
SPIS_N
SPIS_N
SPIQ
SPIC
SPID
SPIQ
SPIC
SPID
X
X
0
0
0
READ COMMAND
0
0
WRITE COMMAND
0
0
0
0
0
0
Figure 8: SPI Write Data Cycle
Figure 9: SPI Read Data Cycle
0
1
1
1
0
A7 A6 A5 A4 A3 A2 A1 A0
A7 A6 A5 A4 A3 A2 A1 A0
READ ADDRESS
WRITE ADDRESS
45
D7
D7
[e-mail]
D6
D6
READ DATA
D5
D5
D4
WRITE DATA
D4
D3
D3
D2
D2
D1
D1
D0
or [phone]
D0
M9999-062509
KS8993F/FL