參數(shù)資料
型號： KS8993ML
廠商： Micrel Inc
文件頁數(shù)： 54/85頁
文件大?。?/td> 0K
描述： IC SWITCH 10/100 3PORT 128PQFP
標準包裝： 66
系列： *
類型： *
應用： *
安裝類型： 表面貼裝
封裝/外殼： 128-BFQFP
供應商設(shè)備封裝： 128-PQFP（14x20）
包裝： 散裝
配用： 576-1016-ND - BOARD EVAL FOR KS8993ML
其它名稱： 576-1015
Micrel, Inc.
KS8993M/ML/MI
April 2005
58
M9999-041205
Register 25 (0x19): Port 1 Control 9
Register 41 (0x29): Port 2 Control 9
Register 57 (0x39): Port 3 Control 9
Bit
Name
R/W
Description
Default
7-0
Receive low
priority rate
control [7:0]
R/W
This register along with port control 10, bits [7:4]
form a 12-bits field to determine how many
“32Kbps” low priority blocks can be received (in a
unit of 4Kbytes in a one second period).
0x00
Register 26 (0x1A): Port 1 Control 10
Register 42 (0x2A): Port 2 Control 10
Register 58 (0x3A): Port 3 Control 10
Bit
Name
R/W
Description
Default
7-4
Receive low
priority rate
control [11:8]
R/W
These bits along with port control 9, bits [7:0]
form a 12-bits field to determine how many
“32Kbps” low priority blocks can be received (in a
unit of 4Kbytes in a one second period).
0x0
3-0
Receive high
priority rate
control [11:8]
R/W
These bits along with port control 8, bits [7:0]
form a 12-bits field to determine how many
“32Kbps” high priority blocks can be received (in
a unit of 4Kbytes in a one second period).
0x0
Register 27 (0x1B): Port 1 Control 11
Register 43 (0x2B): Port 2 Control 11
Register 59 (0x3B): Port 3 Control 11
Bit
Name
R/W
Description
Default
7
Receive
differential
priority rate
control
R/W
= 1, If bit 6 is also ‘1’ this will enable receive rate
control for this port on low priority packets at the
low priority rate. If bit 5 is also ‘1’, this will enable
receive rate control on high priority packets at the
high priority rate.
= 0, receive rate control will be based on the low
priority rate for all packets on this port.
0
6
Low priority
receive rate
control enable
R/W
= 1, enable port’s low priority receive rate control
feature
= 0, disable port’s low priority receive rate control
0
5
High priority
receive rate
control enable
R/W
= 1, If bit 7 is also ‘1’ this will enable the port’s
high priority receive rate control feature. If bit 7 is
a ‘0’ and bit 6 is a ‘1’, all receive packets on this
port will be rate controlled at the low priority rate.
= 0, disable port’s high priority receive rate
control feature
0
4
Low priority
receive rate
flow control
enable
R/W
= 1, flow control may be asserted if the port’s low
priority receive rate is exceeded.
= 0, flow control is not asserted if the port’s low
priority receive rate is exceeded.
0
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