KSZ8862-16_10 MICREL [Micrel Semiconductor], KSZ8862-16_10 Datasheet - Page 71

• Manufacturer Part Number: KSZ8862-16_10
• Description: 2-Port Ethernet Switch with Non-PCI Interface and Fiber Support
• Manufacturer: MICREL [Micrel Semiconductor]

Bank 32 Switch Global Control Register 3 (0x06): SGCR3
This register contains the global control for the switch function.
Rate: 148,800 frames/sec * 67 ms/interval * 1% = 99 frames/interval (approx.) = 0x63.
Bank 32 Switch Global Control Register 4 (0x08): SGCR4
This register contains the global control for the switch function.
Micrel, Inc.
August 2010
Bit
1
0
Bit
15-8
7
6
5
4
3
2-0
Bit
15-0
0
1
0
0
0
0
0
Default
Default
0x63
0x0
Default
0x2400
R/W
RW
RW
R/W
RW
RW
RW
RW
RW
RW
RW
R/W
RW
Description
Legal Maximum Packet Size Check Enable
0 = accepts packet sizes up to 1536 bytes (inclusive).
1 = 1522 bytes for tagged packets, 1518 bytes for untagged packets. Any packets larger than the
specified value are dropped.
Priority Buffer Reserve
1 = each port is pre-allocated 48 buffers, used exclusively for high priority (q3, q2, and q1) packets.
Effective only when the multiple queue feature is turned on.
0 = each port is pre-allocated 48 buffers used for all priority packets (q3, q2,q1, and q0).
Description
Broadcast Storm Protection Rate Bit [7:0]
These bits, along with SGCR3[2:0], determine how many 64-byte blocks of packet data are allowed
on an input port in a preset period. The period is 67ms for 100BT or 670ms for 10BT. The default is
1%.
Reserved
Switch Host Half-Duplex Mode
1 = enable host port interface half-duplex mode.
0 = enable host port interface full-duplex mode.
Switch Flow Control Enable
1 = enable full-duplex flow control on Switch Host port.
0 = disable full-duplex flow control on Switch Host port.
Reserved
Null VID Replacement
1 = replaces NULL VID with port VID(12 bits).
0 = no replacement for NULL VID.
Broadcast Storm Protection Rate Bit [10:8]
These bits, along with SGCR3[15:8] determine how many 64-byte blocks of packet data are allowed
on an input port in a preset period. The period is 67ms for 100BT or 670ms for 10BT. The default is
1%.
Description
Reserved
71
KSZ8862-16/32MQL
M9999-081310-3.1