KSZ8864RMN Micrel Inc, KSZ8864RMN Datasheet - Page 57

• 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
Address
Register 12 (0x0C): Global Control 10
7
6
5 - 4
3
2
1
0
Register 13 (0x0D): Global Control 11
7 - 0
Register 14 (0x0E): Power Down Management Control 1
7
6
Name
Reserved
Satus of device with RMII
interface at clock mode or
normal mode, default is
clock mode with 25MHz
Crystal clock from pins
X1/X2
CPU interface clock select
Reserved
Reserved
Tail Tag Enable
Pass Flow Control Packet
Factory Testing
Reserved
Reserved
Description
Reserved
1 = The device is in clock mode when use RMII
interface, 25 MHz Crystal clock input as clock source
for internal PLL. This internal PLL will provide the 50
MHz output on the pin SMRXC for RMII reference
clock (Default).
0 = The device is in normal mode when use SW4-RMII
interface and 50 MHz clock input from external clock
through pin SM4TXC as device’s clock source and
internal PLL clock source from this pin not from the
25MHz crystal.
Note: This bit is set by strap onption only. Write to this
bit has no effect on mode selection
Note: The normal mode is used in SW4-RMII interface
reference clock from external.
Select the internal clock speed for SPI, MDI interface:
00 = 41.67MHz (SPI up to 6.25MHz, MDC up to
6MHz)
01 = 83.33MHz Default (SPI SCL up to 12.5MHz,
MDC up to 12MHz)
10 = 125MHz (for hign speed SPI about 25MHz)
11 = Reserved
N/A Don’t change.
N/A Don’t change.
Tail Tag feature is applied for Port 4 only.
1 = Insert 1 Byte of data right before FCS
0 = Do not insert
1 = Switch will not filter 802.1x “flow control” packets
0 = Switch will filter 802.1x “flow control” packets
N/A Don’t change.
N/A Don’t change.
N/A Don’t change.
57
Mode
R/W
R/W
R/W
RO
RO
RO
RO
RO
RO
RO
M9999-012011-1.2
Pin P1LED1
strap option.
PD(0): Select
device at normal
mode when use
SW4-RMII and
accept 50MHz
clock from
external.
PU(1): (default)
The device is at
clock mode,
provide 50MHz
clock in RMII.
Note: P1LED1
has internal pull-
up.
Default
00000000
01
00
0
1
1
0
0
0
0