參數(shù)資料
型號(hào)： KSZ8995FQI
廠商： Micrel Inc
文件頁(yè)數(shù)： 53/89頁(yè)
文件大?。?/td> 0K
描述： IC SWITCH 10/100 5PORT 128-PQFP
標(biāo)準(zhǔn)包裝： 66
系列： *
產(chǎn)品目錄頁(yè)面： 1081 (CN2011-ZH PDF)
配用： 576-3872-ND - BOARD EVALUATION FOR KSZ8995FQ
其它名稱： 576-3300
Micrel, Inc.
KS8995MA/FQ
October 2011
57
M9999-102611-3.0
Port Registers (Continued)
Address
Name
Description
Mode
Default
Register 25 (0x19): Port 1 Control 9
Register 41 (0x29): Port 2 Control 9
Register 57 (0x39): Port 3 Control 9
Register 73 (0x49): Port 4 Control 9
Register 89 (0x59): Port 5 Control 9
7
0
Receive Low Priority Rate
Control [7:0]
This along with port control 10, bits [7:4] form a 12-bit field
to determine how many “32Kbps” low priority blocks can
be received (in a unit of 4K bytes in a one second period).
R/W
0
Address
Name
Description
Mode
Default
Register 26 (0x1A): Port 1 Control 10
Register 42 (0x2A): Port 2 Control 10
Register 58 (0x3A): Port 3 Control 10
Register 74 (0x4A): Port 4 Control 10
Register 90 (0x5A): Port 5 Control 10
7
4
Receive Low Priority
Rate Control [11:8]
This along with port control 9, bits [7:0] form a 12-bit field to
determine how many “32Kbps” low priority blocks can be
received (in a unit of 4K bytes in a one second period).
R/W
0
3
0
Receive High Priority
Rate Control [11:8]
This along with port control 8, bits [7:0] form a 12-bit field to
determine how many “32Kbps” high priority blocks can be
received (in a unit of 4K bytes in a one second period).
R/W
0
Address
Name
Description
Mode
Default
Register 27 (0x1B): Port 1 Control 11
Register 43 (0x2B): Port 2 Control 11
Register 59 (0x3B): Port 3 Control 11
Register 75 (0x4B): Port 4 Control 11
Register 91 (0x5B): Port 5 Control 11
7
Receive Differential
Priority Rate Control
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.
R/W
0
6
Low Priority Receive
Rate Control Enable
1, enable port’s low priority receive rate control feature.
0, disable port’s low priority receive rate control.
R/W
0
5
High Priority Receive
Rate Control Enable
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.
R/W
0
4
Low Priority Receive
Rate Flow Control
Enable
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.
R/W
0
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