參數(shù)資料
型號: TDA7503
廠商: STMICROELECTRONICS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝: 14 X 14 MM, 1.40 MM HEIGHT, TQFP-100
文件頁數(shù): 8/30頁
文件大小: 297K
代理商: TDA7503
TDA7503
16/30
SP INTERFACE
Figure 8. SPI Clocking scheme
MICRO MEMORY INTERFACE
For the calculation of slowest access time allowed for a memory attached to the MX51, the following diagram
illustrates the timing constraints. Slowest access time allowed, tacc = 4*mclk - tad - tds, where the worst case
address delay, tad = 30 ns, and the worst case data setup time, tds = 20 ns.
Figure 9. Timing diagram for External Memory Interface
Symbol
Description
Min Value
Unit
MASTER
tsclk
Clock Cycle
mclk/12
s
tdtr
Sclk edge to MOSI valid
40
s
tdts
MISO setup time
5
s
SLAVE
tsclk
Clock Cycle
mclk/6
s
tdtr
Sclk edge to MOSI valid
40
s
tdts
MISO setup time
5
s
tsckph
Minimum SCK high time
mclk/12
s
tsckpl
Minimum SCK low time
mclk/12
s
SS
SCLK
MISO, MOSI
INTERNAL STROBE FOR DATA CAPTURE
D02AU1378
(CPOL=0, CPHA=0)
(CPOL=0, CPHA=1)
(CPOL=1, CPHA=0)
(CPOL=1, CPHA=1)
MSB
654321
LSB
mclk
XALE
XPSEN
OPLOAD
ADDRESS
DATA
tad
tds
D02AU1379
tacc
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