at75c220 ATMEL Corporation, at75c220 Datasheet - Page 123
at75c220
Manufacturer Part Number
at75c220
Description
Smart Internet Appliance Processor Siap
Manufacturer
ATMEL Corporation
Datasheet
1.AT75C220.pdf
(144 pages)
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Figure 28. Functional Flow Diagram in Master Mode
SP_RDR(RD) = Serializer
Serializer = SP_TDR(TD)
NPCS = SP_TDR(PCS)
Delay DLYBCT
Delay DLYBCS
Delay DLYBS
Data Transfer
NPCS = 0xF
SPI Enable
TDRE = 1
RDRF = 1
TDRE
TDRE
0
1
1
PS
Variable peripheral
0
1
0
Fixed peripheral
NPCS = SP_MR(PCS)
New peripheral
NPCS = SP_TDR(PCS)
Delay DLYBCS
SP_TDR(PCS)
NPCS = 0xF
1
PS
Variable peripheral
0
Same peripheral
Fixed peripheral
123
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