KSZ8864CNX Datasheet, PDF (64/96 Pages) Microchip Technology – Integrated 4-Port 10/100 Managed Switch with Two MACs MII or RMII Interfaces

KSZ8864CNX/RMNUB
TABLE 4-4: ADVANCED CONTROL REGISTER DESCRIPTIONS (CONTINUED)
Address Name
Description
Mode
Default
Select Switch 1, Select Switch Port 3 MAC3 interface as MAC
6
Port 3 MAC 3 mode.
SW3-MII inter- 0, Select Switch Port 3 MAC3 interface as PHY
R/W
0
face mode
mode (default).
5 - 0 Reserved
N/A Do not change
RO
0x2C
Register 239 (0xEF): Test Register 3
7 - 0 Reserved
N/A Do not change
RO
0x32
Register 255 (0xFF): Test Register 4
7
Reserved
N/A Do not change
RO
0x00
6
Invert phase of
SMTXC clock
input on SW4-
RMII for
KSZ8864 Port 4
RMII
1 = Invert the phase of SMTXC clock input in
RMII mode, use falling edge to clock output data
internally that will add KSZ8864 RMII output
delay 10 ns if SMRXC is not inverted.
0 = normal phase if SMTXC clock input
R/W
0
5
Reserved
N/A Do not change
RO
0
Invert phase of
SMRXC clock 1 = Invert the phase of SMRXC clock output in
4
output on SW4- RMII mode that will add opposite RMII output
RMII for
delay 10 ns from clock rising edge to data out.
R/W
0
KSZ8864 Port 4 0 = normal phase if SMRXC clock output
RMII
3 - 0 Reserved
N/A Do not change
RO
0x0
Note 4-1
In the priority 0-3 ingress rate limit mode, there is a need to set all related ingress/egress port to two
queues or four queues mode.
Note 4-2
In the port queue 0-3 egress rate limit mode, the highest priority get exact rate limit based on the
rate select table, other priorities packets rate are based up on the ratio of the Register Port Control
10/11/12/13 when use more than one egress queue per port.
TABLE 4-5: DATA RATE SELECTION IN 100BT
Rate for 100BT Mode
1 Mbps ≤ Rate ≤ 99 Mbps
Rate = 100 Mbps
For less than 1 Mbps, see below.
64 Kbps
128 Kbps
192 Kbps
256 Kbps
320 Kbps
384 Kbps
448 Kbps
512 Kbps
576 Kbps
640 Kbps
704 Kbps
768 Kbps
832 Kbps
Priority/Queue 0-3 Ingress/Egress Limit
Control Register bit [6:0] = Decimal
Rate (decimal integer 1-99)
0 or 100 (decimal), ‘0’ is default value
Decimal
7’d101
7’d102
7’d103
7’d104
7’d105
7’d106
7’d107
7’d108
7’d109
7’d110
7’d111
7’d112
7’d113
DS00002229A-page 64
 2016 Microchip Technology Inc.