KSZ8864RMN Micrel Inc, KSZ8864RMN Datasheet - Page 19

• 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
Pin for Strap-in Options
The KSZ8864RMN can function as a managed switch or unmanaged switch. If no EEPROM or micro-controller
exists, the KSZ8864RMN will operate from its default setting. The strap-in option pins can be configures by external
pull-up/down resistors and take the effect after power up reset or warm reset, the functions are described in the
following table:
Pin Number
25
26
27
28
41
42
43
44
47
SM3RXD3
SM3RXD2
SM3RXD1
SM3RXD0
SM4RXD3
SM4RXD2
SM4RXD1
SM4RXD0
Pin Name
SCONF1
Type
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd
(1)
Port
Pin Function
MAC3 Switch MII receive bit 3
Strap option:
PD (default) = enable flow control;
PU = disable flow control.
MAC3 Switch MII receive bit 2 and Strap option:
PD (default) = disable back pressure;
PU = enable back pressure.
MAC3 Switch MII/RMII receive bit 1
Strap option:
PD (default) = drop excessive collision packets;
PU = does not drop excessive collision packets.
MAC3 Switch MII/RMII receive bit 0
Strap option:
PD (default) = disable aggressive back-off algorithm in half-duplex mode;
PU = enable for performance enhancement.
MAC4 Switch MII receive bit 3.
Strap option:
PD (default) = Disable Switch MII/RMII full-duplex flow control;
PU = Enable Switch MII/RMII full-duplex flow control.
MAC4 Switch MII receive bit 2.
Strap option:
PD (default) = Switch MII/RMII in full-duplex mode;
PU = Switch MII/RMII in half-duplex mode.
MAC4 Switch MII/RMII receive bit 1.
Strap option:
PD (default) =MAC4 Switch SW4-MII/RMII in 100Mbps mode;
PU = MAC4 Switch SW-5MII/RMII in 10Mbps mode.
MAC4 Switch MII/RMII receive bit 0.
Strap option: LED mode
PD (default) = mode 0;
PU = mode 1.
See “Register 11.”
PxLED1
PxLED0
MAC4 Switch SW4-MII enabled with PHY mode or MAC mode, have to
configure SCONF1 Pin 47 with SCONF0 Pin 48 together.
(2)
19
Mode 0
Lnk/Act
Speed
100Lnk/Act
Full duplex
Mode 1
M9999-012011-1.2