参数资料
型号: 78Q8430EBST#DB
厂商: Maxim Integrated Products
文件页数: 83/88页
文件大小: 0K
描述: EVAL BOARD 78Q8430
标准包装: 1
系列: *
78Q8430 Data Sheet
DS_8430_001
84
Rev. 1.2
10 System Bus Interface Schematic
78Q8430
Single Chip
10/100 Ethernet
MAC & PHY
+3.3V
VCC
GND
DATA31
DATA30
DATA29
DATA28
DATA27
DATA26
DATA25
DATA24
DATA23
DATA22
DATA21
DATA20
DATA19
DATA18
DATA17
DATA16
DATA15
DATA14
DATA13
DATA12
DATA11
DATA10
DATA9
DATA8
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
ADDR9
ADDR8
ADDR7
ADDR6
ADDR5
ADDR4
ADDR3
ADDR2
ADDR1
ADDR0
RESET
BUSCLK
CS
WR
OE
MEMWAIT
INT
PME
ENDIAN1
ENDIAN0
BOOTSZ1
BOOTSZ0
BUSMODE
CLKMODE
WAITMODE
PROMCLK
PROMCS
PROMDO
PROMDI
Optional
JTAG
BSDL
Interface
Optional
External
EEPROM
BOOTSZ[1:0]
00 - bus is 32-bit wide
01 - bus is 16-bit wide
10 - bus is 8-bit wide
ENDIAN[1:0]
0,0 = Big Endian (MSB at high bit positions)
1,1 = Little Endian (MSB at low bit positions)
BUSMODE, CLKMODE, WAITMODE
0,0,0 = sync bus, ext. system clock, memwait act low
0,0,1 = sync bus, ext. system clock, memwait act high
1,0,0 = async bus, ext. system clock, memwait act low
1,0,1 = async bus, ext. system clock, memwait act high
1,1,0 = async bus, int. system clock, memwait act low
1,1,1 = async bus, int. system clock, memwait act high
TCLK
TRST
TMS
TDO
TDI
Figure 15: System Bus Interface Schematic
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