參數(shù)資料
型號(hào)： KSZ8842-32MVLI
廠商： Micrel Inc
文件頁數(shù)： 102/141頁
文件大小： 0K
描述： IC SWITCH ETH 2P 32BIT 128LQFP
標(biāo)準(zhǔn)包裝： 90
控制器類型： 以太網(wǎng)開關(guān)控制器
接口： PCI
電源電壓： 3.1 V ~ 3.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 128-LQFP
供應(yīng)商設(shè)備封裝： 128-LQFP（14x14）
包裝： 托盤
產(chǎn)品目錄頁面： 1081 (CN2011-ZH PDF)
配用： 576-1635-ND - BOARD EVALUATION KSZ8842-16MVL
其它名稱： 576-3270
Micrel, Inc.
KSZ8842-16/32 MQL/MVL/MVLI/MBL
October 2007
63
M9999-102207-1.9
Bank 3 On-Chip Bus Control Register (0x00): OBCR
This register controls the on-chip bus speed for the KSZ8842M. It is used for power management when the external host
CPU is running at a slow frequency. The default of the on-chip bus speed is 125 MHz without EEPROM. When the
external host CPU is running at a higher clock rate, the on-chip bus should be adjusted for the best performance.
Bit
Default Value
R/W
Description
15-2
-
RO
Reserved
1-0
0x0
RW
OBSC On-Chip Bus Speed Control
00: 125MHz.
01: 62.5MHz.
10: 41.66MHz.
11: 25MHz.
Note: When external EEPROM is enabled, the bit 1 in Configparm word (0x6H) is
used to contol this speed as below:
Bit 1 = 0 , this value will be 00 for 125 MHz.
Bit 1 = 1 , this value will be 11 for 25 MHz.
(User still can write these two bits to change speed after EEPROM data loaded)
Bank 3 EEPROM Control Register (0x02): EEPCR
To support an external EEPROM, tie the EEPROM Enable (EEEN) pin to High; otherwise, tie it to Low. If an external
EEPROM is not used, the default chip Base Address (0x300), and the software programs the host MAC address. If an
EEPROM is used in the design (EEPROM Enable pin to High), the chip Base Address and host MAC address are loaded
from the EEPROM immediately after reset. The KSZ8842M allows the software to access (read and write) the EEPROM
directly; that is, the EEPROM access timing can be fully controlled by the software if the EEPROM Software Access bit is
set.
Bit
Default Value
R/W
Description
15-5
-
RO
Reserved
4
0
RW
EESA EEPROM Software Access
1: enable software to access EEPROM through bit 3 to bit 0.
0: disable software to access EEPROM.
3
-
RO
EECB EEPROM Status Bit
Data Receive from EEPROM. This bit directly reads the EEDI pin.
2-0
0x0
RW
EECB EEPROM Control Bits
Bit 2: Data Transmit to EEPROM. This bit directly controls the device’s EEDO pin.
Bit 1: Serial Clock. This bit directly controls the device’s EESK pin.
Bit 0: Chip Select for EEPROM. This bit directly controls the device’s EECS pin.
相關(guān)PDF資料
PDF描述
KSZ8842-PMBL AM TR IC ETHERNET SW 2PORT 100LFBGA
KSZ8842-PMQLI IC ETHERNET SW 2PORT PCI 128PQFP
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KSZ8851-16MLLJ IC CTLR MAC 1PORT NON-PCI 48LQFP
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
KSZ8842-MQL 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:2-Port Ethernet Switch with Non-PCI Interface
KSZ8842P 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:2-Port Ethernet Switch with PCI Interface
KSZ8842-PMBL 功能描述:以太網(wǎng) IC 2-Port Ethernet Switch/Repeater + 32-bit/33MHz PCI bus interface (Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8842-PMBL AM 功能描述:以太網(wǎng) IC 2-Port Ethernet Switch/Repeater + 32-bit/33MHz PCI bus interface(Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8842-PMBL AM TR 功能描述:以太網(wǎng) IC 2-Port Ethernet Switch/Repeater + 32-bit/33MHz PCI bus interface(Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
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