MRF49XA Datasheet, PDF (84/102 Pages) Microchip Technology – ISM Band Sub-GHz RF Transceiver

MRF49XA
5.1 Timing Specification and Diagram
TABLE 5-8: SPI TIMING SPECIFICATION
Symbol
Parameter
t_CH
Clock High Time
t_CL
Clock Low Time
t_SS
Select Setup Time (CS falling edge to SCK rising edge)
t_SH
Select Hold Time (SCK falling edge to CS rising edge)
t_SHI
Select High Time
t_DS
Data Setup Time (SDI transition to SCK rising edge)
t_DH
Data Hold Time (SCK rising edge to SDI transition)
t_OD
Data Delay Time
FIGURE 5-1:
SPI TIMING DIAGRAM
Minimum Value (ns)
25
25
10
10
25
5
5
10
CS
SCK
SDI
tSS
tCH
t_CL
t_DS
t_DH
BIT 15
BIT 14
BIT 13
t_CD
BIT 8
BIT 7
tSHI
tSH
BIT 1
BIT 0
SDO
TXRXFIFO
POR
TXOWRXOF
DQDO
ATRSSI
OFFSB(0)
FIFO OUT
DS70590B-page 82
Preliminary
© 2009 Microchip Technology Inc.