ADSP-2109 AD [Analog Devices], ADSP-2109 Datasheet - Page 26

• Manufacturer Part Number: ADSP-2109
• Description: Low Cost DSP Microcomputers
• Manufacturer: AD [Analog Devices]

ADSP-2104/ADSP-2109
TIMING PARAMETERS (ADSP-2104/ADSP-2109)
SERIAL PORTS
Parameter
Timing Requirement:
t
t
t
t
Switching Characteristic:
t
t
t
t
t
t
t
t
t
t
*Maximum serial port operating frequency is 13.824 MHz.
SCK
SCS
SCH
SCP
CC
SCDE
SCDV
RH
RD
SCDH
TDE
TDV
SCDD
RDV
SCLK Period
DR/TFS/RFS Setup before SCLK Low
DR/TFS/RFS Hold after SCLK Low
SCLK
CLKOUT High to SCLK
SCLK High to DT Enable
SCLK High to DT Valid
TFS/RFS
TFS/RFS
DT Hold after SCLK High
TFS (Alt) to DT Enable
TFS (Alt) to DT Valid
SCLK High to DT Disable
RFS (Multichannel, Frame Delay Zero)
to DT Valid
IN
Width
OUT
OUT
FRAME DELAY 0 {MFD = 0} )
Hold after SCLK High
Delay from SCLK High
( MULTICHANNEL MODE,
FRAME MODE )
( ALTERNATE
OUT
CLKOUT
RFS
TFS
SCLK
RFS
TFS
RFS
TFS
OUT
OUT
DR
DT
IN
IN
t
t
t
SCDE
CC
SCDV
t
t
t
t
RD
RH
TDE
TDV
Min
72.3
8
10
28
18.1
0
Figure 24. Serial Ports
t
13.824 MHz*
RDV
–26–
t
t
CC
SCS
t
SCH
Max
33.1
20
20
18
25
20
t
SCDH
t
SCDD
t
SCP
Min
0.25t
Dependency
Frequency
CK
t
SCK
t
SCP
Max
0.25t
CK
+ 15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
REV. 0