Motorola EVB555, Быстрая справка, Страница: 45 / 49

EVB555 MOTOROLA
Quick Reference A-47
52 SGA2 SADDR[29] See SADDR[31]
53 SGA3 SADDR[28] See SADDR[31]
54 SGA4 SADDR[27] See SADDR[31]
55 SGA5 SADDR[26] See SADDR[31]
56 SGA6 SADDR[25] See SADDR[31]
57 SGA7 SADDR[24] See SADDR[31]
58 GND GND Ground
59 SGA8 SADDR[23] See SADDR[31]
60 SGA9 SADDR[22] See SADDR[31]
61 SGA10 SADDR[21] See SADDR[31]
62 SGA11 SADDR[20] See SADDR[31]
63 SGA12 SADDR[19] See SADDR[31]
64 SGA13 SADDR[18] See SADDR[31]
65 SGA14 SADDR[17] See SADDR[31]
66 SGA15 SADDR[16] See SADDR[31]
67 GND GND Ground
68 SGA16 SADDR[15] See SADDR[31]
69 SGA17 SADDR[14] See SADDR[31]
70 SGA18 SADDR[13] See SADDR[31]
71 SGA19 SADDR[12] See SADDR[31]
72 SGA20 SADDR[11] See SADDR[31]
73 SGA21 SADDR[10] See SADDR[31]
74 GND GND Ground
75 SGA22 SADDR[9] See SADDR[31]
76 SGA23 SADDR[8] See SADDR[31]
77 /SGCSF /CS[0] Chip select flash
78 /SGCSM /CS[3] Chip select dual mapping
79 GND GND Ground
80 /SGRW RD_/WR Read/write : ”1”
→
read, ”0”
→
write
81 GND GND Ground
82 /SGRW /OE Output enable
83 /SGWCS /SGWCS Chip select SRAM
84 /SGBE0 /WE_AT[3]
Write enable: /WE3 is asserted if the data lane
DATA[24:31] contains valid data.
85 /SGOEF /SGOEF To gate /OE of flash (flash emulation)
86 GND GND Ground
87 GND GND Ground
88 /SGBE1 /WE_AT[2]
Write enable: /WE2 is asserted if the data lane
DATA[16:23] contains valid data.
89 SGSIZ0 TSIZ[1]
Transfer size: indicates the size of
the requested data transfer.
90 SGSIZ1 TSIZ[0] See TSIZ[0]
91 /SGBE2 /WE_AT[1]
Write enable: /WE1 is asserted if the data lane
DATA[8:15] contains valid data.
92 /SGBE3 /WE_AT[0]
Write enable: /WE0 is asserted if the data lane
DATA[0:7] contains valid data.
93 GND GND Ground
94 /SGINST /IRQ4_AT2
address type 2:
differentiate code or data access
95 GND GND Ground
96 /SGTS /TS Transfer start: start of a bus cycle that transfers data
97 /SGCSR /SGCSR Chip select for piggy-back on ETK
98 GND GND Ground
99 /SGTA /TA Transfer acknowledge: transfer accepted/valid
100 GND GND Ground
Pin ETK signal name EVB signal name Signal description