参数资料
型号: KSZ8841-16MQL
厂商: Micrel Inc
文件页数: 37/105页
文件大小: 0K
描述: IC MAC CTRLR 8/16BIT 128-PQFP
标准包装: 66
控制器类型: 以太网控制器,MAC
接口: 总线
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-BFQFP
供应商设备封装: 128-PQFP(14x20)
包装: 托盘
产品目录页面: 1080 (CN2011-ZH PDF)
配用: 576-1631-ND - BOARD EVALUATION KSZ8841-16MQL
其它名称: 576-2112
KSZ8841-16MQL-ND
Micrel, Inc.
KSZ8841-16/32 MQL/MVL/MBL
October 2007
37
M9999-102207-1.6
KSZ8841M BIU
Asynchronous
Interface
Synchronous
Interface
Address Latch
No Addr Latch
(ADSN = 0)
Central decode
Local
decode
Address Latch
Central decode
(VLBUSN = 1)
Local
decode
(VLBUSN = 0)
Host Interface
ISA
EISA
VLBus
Burst
Non-burst
Note: To use DATACSN & 32-bit only for Central decode
Figure 10. Mapping from the ISA, EISA, and VLBus to the KSZ8841M Bus Interface
D[7:0]
D[15:8]
D[23:16]
D[31:24]
GND
HD[7:0]
nHBE[0]
nHBE[2]
nHBE[3]
HD[15:8]
nHBE[1]
HD[23:16]
HD[31:24]
A[15:2]
A[1]
D[7:0]
D[15:8]
BE0N
BE1N
8-bit Data Bus
HA[1]
HA[15:2]
HD[7:0]
HA[0]
VDD
A[15:2]
A[1]
D[7:0]
D[15:8]
BE0N
BE1N
16-bit Data Bus
(for example: ISA-like)
HA[1]
HA[15:2]
HD[7:0]
HA[0]
nSBHE
A[15:2]
A[1]
BE0N
BE1N
BE2N
BE3N
32-bit Data Bus
(for example: EISA-like)
HA[15:2]
HD[15:8]
KSZ8841-16
KSZ8841-32
Figure 11. KSZ8841M 8-Bit, 16-Bit, and 32-Bit Data Bus Connections
BIU Implementation Principles
Since KSZ8841M is an I/O device with 16 addressable locations, address decoding is based on the values of A15-A4 and
AEN. Whenever DATACSN is asserted, the address decoder is disabled and a 32-bit transfer to Data Register is
assumed (BE3N – BE0N are ignored).
If address latching is required, the address is latched on the rising edge of ADSN and is transparent when ADSN=0.
1.
Byte, word, and double word data buses and accesses (transfers) are supported.
2.
Internal byte swapping is not implemented and word swapping is supported internally. Refer to Figure 11 for the
appropriate 8-bit, 16-bit, and 32-bit data bus connection.
3.
Since independent sets of synchronous and asynchronous signals are provided, synchronous and asynchronous
cycles can be mixed or interleaved as long as they are not active simultaneously.
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