H O S T I N T E R F A C E
Data Device Corporation
DS-BU-67301B-G
1/14
44
Figure 12. Asynchronous Non-Multiplexed Address 32-bit Write Timing
Figure 12 Notes:
1. When nSELECT is asserted (low), the
Total-AceXtreme®
is selected for this
data transfer. nSELECT must be asserted through the full transfer cycle. In
Asynchronous mode, nSELECT may be kept low for consecutive transactions
by the
Total-AceXtreme
.
2. The CPU_WORD_EN[1:0] inputs are used to specify which 16-bit data
memory words are to be written. If either or both these bits is ‘0’, then the
corresponding 16-bit word(s) will not be written. These inputs should be tied
high if unused.
3. For register accesses, the value of CPU_WORD_EN[1:0] must be ‘11’.
nDATA_RDY
CPU_DATA
CPU_WORD_EN[1:0]
RD_nWR
MEM_nREG
CPU_ADDR
nDATA_STRB
nSELECT
tAS
tSS
tRDD
tSH
tWait
tAS
tAS
tAS
Data
tDS
tDH
tAH
tAH
tAH
tAH