参数资料
型号: KSZ8695PX-EVAL
厂商: Micrel Inc
文件页数: 20/40页
文件大小: 0K
描述: KIT EVAL KSZ8695PX EXPERIMENT
标准包装: 1
主要目的: 接口,以太网控制器(PHY 和 MAC)
嵌入式:
已用 IC / 零件: KSZ8695PX
主要属性: 单芯片网关解决方案
已供物品:
相关产品: 576-1024-ND - IC SWITCH 10/100 1PORT 289PBGA
其它名称: 576-3876
KSZ8695PX-EVAL-ND
KS8695PX
Memory Interface
Micrel
The KS8695PX has a glueless interface for SDRAM and
static memory, i.e. ROM, SRAM, and Flash. It supports up
to two banks of static memory (Figure 7), up to two banks of
SDRAM (Figure 8), and three banks of external I/O (Figure
9). The total address space for the KS8695PX is 64MB.
This includes SDRAM, static memory, external I/O, and the
KS8695PX's own 64KB of register space.
The memory interface for the SDRAM and static memory has
a special automatic address mapping feature. This allows the
designer to connect address bit 0 on the memory to ADDR[0]
on the KS8695PX and address bit 1 on the memory to ADDR[1]
on the memory, regardless of whether the designer is trying
to achieve word, half word, or byte addressing.
The KS8695PX memory controller performs the address
mapping internally. This permits the designer to use the
maximum amount of address bits, instead of losing one
or two bits because of address mapping. For external I/O,
however, the designer still needs to take care of the address
mapping (see Figure 9).
Byte Wide
Static Memory
KS8695PX
KS8695PX
SDICLK
SDOCLK
SDCKE
DATA[15..0]
ADDR[12..0]
ADDR[21..20]
SDCSN0
SDRASN
SDCASN
SDQM0
SDQM1
SDWEN
KS8695PX
16
13
2
Half Word Wide
SDRAM
16M x 16
CLK
CKE
DQ[15..0]
A[12..0]
BA[1..0]
CS#
RAS#
CAS#
LDQM
UDQM
WE#
ADDR0
ADDR1
ADDR[21:2]
DATA[7:0]
RCSN0
EROEN
ERWEN0
KS8695PX
ADDR0
ADDR1
ADDR[21:2]
DATA[15:0]
20
8
20
16
A0
A1
A[21:2]
D[7:0]
CE
OE
WE
Half Word Wide
Static Memory
A0
A1
A[21:2]
D[15:0]
SDICLK
SDOCLK
SDCKE
DATA[31..0]
ADDR[11..0]
ADDR[21..20]
SDCSN0
SDRASN
SDCASN
SDQM[3..0]
SDWEN
32
12
2
4
Word Wide
SDRAM
4M x 32
CLK
CKE
DQ[31..0]
A[11..0]
BA[1..0]
CS#
RAS#
CAS#
DQM[3..0]
WE#
RCSN0
EROEN
ERWEN0
VDD
CE
OE
WE
BYTE
Figure 8. SDRAM Interface Examples
Figure 7. Static Memory Interface Examples
M9999-091605
20
September 2005
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