參數(shù)資料
型號(hào)： STA450A
廠商： 意法半導(dǎo)體
英文描述： XMRADIO SDARS SERVICE LAYER & SOURCE DECODER
中文描述： XMRADIO衛(wèi)星數(shù)字收音機(jī)服務(wù)層
文件頁數(shù)： 14/66頁
文件大?。?/td> 439K
代理商： STA450A
STA450A
14/66
2.2.3
"Single read" & "multiple read" & "sub-address + single read" & "sub-address + multiple
read"
The single read operations are performed from the current sub-address value. The sub-address value can be
initialized using the "sub_address" initialization" sequence presented in the previous transfer chart : see the
"combined format - sub-address + single read" diagram in the following chart.
The multiple read operations are performed from the current sub-address value and the sub-address register is
automatically incremented at each access. The sub-address value can be initialized using the "sub_address ini-
tialization" sequence presented in the previous transfer chart : see the "combined format - sub-address + mul-
tiple read" diagram in the following chart. The length of a multiple read is limited to the size of the Host register
area (256 locations). A multiple read is terminated by a Non Master Acknowledge followed by a STOP condition.
START
SLAVE ADDRESS
SUB-ADDRESS @
W
SA
SA
DATA TO @ SA STOP
SUB-ADDRESS + SINGLE WRITE
SUB-ADDRESS INITIALIZATION
W : R/W BIT = WRITE
SA : SLAVE ACKNOWLEDGE
@ : SUB-ADDRESS VALUE
START
SLAVE ADDRESS
SUB-ADDRESS @
W
SA
SA
DATA TO @ SA
SUB-ADDRESS + MULTIPLE WRITE
DATA TO @+1
SA
DATA TO @+2 SA
STOP
START
SLAVE ADDRESS
SUB-ADDRESS @
W
SA
SA
STOP
START
SLAVE AD-
DATA
R
SA
NMA STOP
SINGLE READ
START
SLAVE ADDRESS
FIRST DATA
R
SA
STOP
MULTIPLE READ
MA
SECOND DATA
NMA
START
SLAVE ADDRESS
SUB-ADDRESS
WSA
COMBINED FORMAT : SUB-ADDRESS + SINGLE READ
DATA FROM @
W
STAR
SLAVE AD-
R SA
NMA STOP
SA
START
SLAVE ADDRESS
W
SA
SUB-ADDRESS @
SA START
SLAVE ADDRESS
R
SA
DATA FROM @ + 1
MA
DATA FROM @
NMA
STOP
COMBINED FORMAT : SUB-ADDRESS + MULTIPLE READ
R : R/W BIT = READ
SA : SLAVE ACKNOWLEDGE
MA : MASTER ACKNOWLEDGE
NMA : NO MASTER ACKNOWLEDGE (LAST DATA)
@ : SUB-ADDRESS VALUE
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