参数资料
型号: KSZ8842-16MVL
厂商: Micrel Inc
文件页数: 29/141页
文件大小: 0K
描述: IC ETHERNET SW 2PORT BUS 128LQFP
标准包装: 90
控制器类型: 以太网开关控制器
接口: PCI
电源电压: 3.1 V ~ 3.5 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-LQFP(14x14)
包装: 托盘
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-1635-ND - BOARD EVALUATION KSZ8842-16MVL
其它名称: 576-2119
KSZ8842-16MVL-ND
Micrel, Inc.
KSZ8842-16/32 MQL/MVL/MVLI/MBL
October 2007
124
M9999-102207-1.9
Timing Specifications
Asynchronous Timing without using Address Strobe (ADSN = 0)
Figure 17. Asynchronous Cycle – ADSN = 0
Symbol
Parameter
Min
Typ
Max
Unit
t1
A1-A15, AEN, BExN[3:0] valid to RDN, WRN active
0
ns
A1-A15, AEN, BExN[3:0] hold after RDN inactive
(assume ADSN tied Low)
0
ns
t2
A1-A15, AEN, BExN[3:0] hold after WRN inactive
(assume ADSN tied Low)
1
t3
Read data valid to ARDY rising
0.8
ns
t4
Read data to hold RDN inactive
4
ns
t5
Write data setup to WRN inactive
4
ns
t6
Write data hold after WRN inactive
2
ns
t7
Read active to ARDY Low
8
ns
t8
Write inactive to ARDY Low
8
ns
ARDY low (wait time) in read cycle (Note1)
(It is 0ns to read bank select register and 40ns to
read QMU data register in turbo mode) (Note2)
0
40
ns
t9
ARDY low (wait time) in read cycle (Note1)
(It is 0ns to read bank select register and 80ns to
read QMU data register in normal mode)
0
80
ns
t10
ARDY low (wait time) in write cycle (Note1)
(It is 0ns to write bank select register)
(It is 36ns to write QMU data register)
0
50
ns
Note 1: When CPU finished current Read or Write operation, it can do next Read or Write operation even
the ARDY is low. During Read or Write operation if the ADRY is low, the CPU has to keep the
RDN/WRN low until the ARDY returns to high.
Note 2: In order to speed up the ARDY low time to 40 ns, user has to use the turbo software driver which is only
supported in the A6 device. Please refer to the “KSZ88xx Programmer's Guide” for detail.
Table 24. Asynchronous Cycle (ADSN = 0) Timing Parameters
t6
t5
t1
t4
t3
t2
valid
Addr, AEN, BExN
ADSN
Read Data
RDN, WRN
Write Data
t7
ARDY
(Read Cycle)
ARDY
(Write Cycle)
t8
t9
t10
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