參數(shù)資料
型號： KS8995XA
廠商： Micrel Inc
文件頁數(shù)： 29/51頁
文件大?。?/td> 0K
描述： IC SWITCH 10/100 5PORT 128PQFP
標(biāo)準(zhǔn)包裝： 66
系列： *
類型： *
應(yīng)用： *
安裝類型： 表面貼裝
封裝/外殼： 128-BFQFP
供應(yīng)商設(shè)備封裝： 128-PQFP（14x20）
包裝： 散裝
配用： 576-1604-ND - EVAL KIT EXPERIMENTAL KS8995XA
May 2005
35
M9999-051305
KS8995XA
Micrel, Inc.
Address
Name
Description
Mode
Default
3
Back pressure enable
1 = enable port half-duplex back pressure.
R/W
Pin PMRXD2 strap
0 = disable port half-duplex back pressure.
option. Pull-down (0):
disable back
pressure. Pull-up(1):
enable back
pressure.
Note: PMRXD2 has
internal pull-down.
2
Transmit enable
1 = enable packet transmission on the port.
R/W
1
0 = disable packet transmission on the port.
1
Receive enable
1 = enable packet reception on the port.
R/W
1
0 = disable packet reception on the port.
0
Learning disable
1 = disable switch address learning capability.
R/W
0
0 = enable switch address learning.
Register 19 (0x13): Port 1 Control 3
Register 35 (0x23): Port 2 Control 3
Register 51 (0x33): Port 3 Control 3
Register 67 (0x43): Port 4 Control 3
Register 83 (0x53): Port 5 Control 3
Address
Name
Description
Mode
Default
7-0
Default tag [15:8]
Port’s default tag, containing:
R/W
0
7-5: user priority bits
4: CFI bit
3-0 : VID[11:8]
Register 20 (0x14): Port 1 Control 4
Register 36 (0x24): Port 2 Control 4
Register 52 (0x34): Port 3 Control 4
Register 68 (0x44): Port 4 Control 4
Register 84 (0x54): Port 5 Control 4
Address
Name
Description
Mode
Default
7-0
Default tag [7:0]
Default port 1’s tag, containing:
R/W
1
7-0: VID[7:0]
Note:
Registers 19 and 20 (and those corresponding to other ports) serve two purposes: (1) Associated with the ingress untagged packets, and used for
egress tagging; (2) Default VID for the ingress untagged or null-VID-tagged packets, and used for address look up.
Register 21 (0x15): Port 1 Control 5
Register 37 (0x25): Port 2 Control 5
Register 53 (0x35): Port 3 Control 5
Register 69 (0x45): Port 4 Control 5
Register 85 (0x55): Port 5 Control 5
Address
Name
Description
Mode
Default
7-0
Transmit high priority
This along with port control 7, bits [3:0] form a 12-bit
R/W
0
rate control [7:0]
field to determine how many “32Kbps” high priority
blocks can be transmitted (in a unit of 4K bytes in a
one second period).
Register 22 (0x16): Port 1 Control 6
Register 38 (0x26): Port 2 Control 6
Register 54 (0x36): Port 3 Control 6
Register 70 (0x46): Port 4 Control 6
Register 86 (0x56): Port 5 Control 6
Address
Name
Description
Mode
Default
7-0
Transmit low priority
This along with port control 7, bits [7:4] form a 12-bit
R/W
0
rate control [7:0]
field to determine how many “32Kbps” low priority
blocks can be transmitted (in a unit of 4K bytes in a
one second period).
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KS8995XC 制造商:RF Micro Devices Inc 功能描述:
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