KS8993F A5 Micrel Inc, KS8993F A5 Datasheet - Page 45

• Manufacturer Part Number: KS8993F A5
• Manufacturer: Micrel Inc

Specifications of KS8993F A5

• 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: Not Compliant

KS8993F
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.
August 26, 2004
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
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READ ADDRESS
WRITE ADDRESS
D7
D7
D6
D6
READ DATA
D5
D5
D4
WRITE DATA
D4
D3
D3
D2
D2
D1
D1
D0
D0
Revision 1.0
Micrel