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参数资料
| 型号： | 4022-DKDB13 |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 9/20页 |
| 文件大小： | 726K |
| 描述： | KIT DEV TEST EZRADIO SI4022 TX |
| 标准包装： | 1 |
| 附件类型： | 测试卡，发射器，868MHz，915MHz |
| 适用于相关产品： | EZRadio? |
9
Si4022
CONTROL INTERFACE
Commands to the transmitters are sent serially. Data bits on pin SDI are shifted into the device upon the rising edge of the clock on
pin SCK whenever the chip select pin nSEL is low. When the nSEL signal is high, it initializes the serial interface. The number of bits
sent is an integer multiple of 8 (except for the Transmitter FIFO Write Command). All commands consist of a command code,
followed by a varying number of parameter or data bits. All data are sent MSB first (e.g. bit 15 for a 16-bit command). Bits having no
influence (dont care) are indicated with X. The Power On Reset (POR) circuit sets default values in all control and command
registers.
Timing Specification
Timing Diagram
SCK
SDI
SDO
nSEL
t
DS
t
DH
t
CH
t
CL
BIT15
BIT14
BIT13
t
SS
BIT8
BIT7
BIT1
BIT0
t
SH
t
SHI
t
OD
BIT15
BIT14
BIT1
BIT0
BIT8
BIT7
BIT13
Symbol
Parameter
Minimum value [ns]
t
CH
Clock high time
25
t
CL
Clock low time
25
t
SS
Select setup time (nSEL falling edge to SCK rising edge)
10
t
SH
Select hold time (SCK falling edge to nSEL rising edge)
10
t
SHI
Select high time
25
t
DS
Data setup time (SDI transition to SCK rising edge)
5
t
DH
Data hold time (SCK rising edge to SDI transition)
5
t
OD
Data delay time
10
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