LAN9313 Datasheet, PDF (393/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
14.5.5 SPI Slave Timing
This section specifies the SPI slave interface timing requirements. Please refer to Section 8.4, "SPI
Slave Operation," on page 118 for a functional description of this serial interface.
nSCS
SCK
SI
SO
t_nscss thigh tlow
t_su t_hd
t_v
Figure 14.5 SPI Slave Timing
t_nscsh
t_dis
t_ho
SYMBOL
f_sck
t_high
t_low
t_nscss
t_nscsh
t_su
t_hd
t_v
t_ho
t_dis
Table 14.9 SPI Slave Timing Values
DESCRIPTION
MIN
SCK clock frequency
SCK high time
40
SCK low time
40
nSCS setup time
50
nSCS hold time
80
Data input setup time
10
Data input hold time
20
Data output valid time
Data output hold time
0
Data output disable time
TYP
MAX UNITS
10
MHz
nS
nS
nS
nS
nS
nS
40
nS
nS
40
nS
SMSC LAN9313/LAN9313i
393
DATASHEET
Revision 1.2 (04-08-08)