KSZ8864RMN Micrel Inc, KSZ8864RMN Datasheet - Page 44

• Manufacturer Part Number: KSZ8864RMN
• Description: IC ETHERNET SW 4PORT 64QFN
• Manufacturer: Micrel Inc

Specifications of KSZ8864RMN

• Controller Type: Ethernet Switch Controller
• Interface: MII, RMII
• Voltage - Supply: 1.8V, 2.5V, 3.3V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Supplier Unconfirmed
• Current - Supply: -
• Lead Free Status / RoHS Status: Supplier Unconfirmed, Lead free / RoHS Compliant
• Other names: 576-3787; KSZ8864RMN

January 2011
To use the KSZ8864RMN SPI:
1. At the board level, connect KSZ8864RMN pins as follows:
2. Set the input signals PS[1:0] (pins 59 and 60, respectively) to “10” to set the serial configuration to SPI slave
3. Power up the board and assert a reset signal. After reset wait 100µs, the start switch bit in Register 1 will be set
4. Write configuration to registers using a typical SPI write data cycle as shown in Figure 9 or SPI multiple write as
5. Registers can be read and configuration can be verified with a typical SPI read data cycle as shown in Figure 10
6. After configuration is written and verified, write a ‘1’ to Register 1 bit 0 to begin KSZ8864RMN switch operation.
KSZ8864RMN Pin
mode.
to ‘0’. Configure the desired settings in the KSZ8864RMN before setting the start register to ‘1.'
shown in Figure 11. Note that data input on SPID is registered on the rising edge of SPIC.
or a multiple read as shown in Figure 12. Note that read data is registered out of SPIQ on the falling edge of
SPIC.
Number
58
56
57
55
KSZ8864RMN Signal
SPID/SDA
SPIS_N
Name
SPIQ
SCL
Figure 10. SPI Read Data Cycle
Figure 9. SPI Write Data Cycle
Table 8. SPI Connections
Microprocessor Signal Description
SPI Slave Select
SPI Clock
Master Out Slave Input
Master In Slave Output
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