
ADSP-2184
–20–
REV. 0
TIMING PARAMETERS
Parameter
Min
Max
Unit
Serial Ports
Timing Requirements:
tSCK
SCLK Period
50
ns
tSCS
DR/TFS/RFS Setup before SCLK Low
4
ns
tSCH
DR/TFS/RFS Hold after SCLK Low
8
ns
tSCP
SCLKIN Width
20
ns
Switching Characteristics:
tCC
CLKOUT High to SCLKOUT
0.25 tCK
0.25 tCK + 10
ns
tSCDE
SCLK High to DT Enable
0
ns
tSCDV
SCLK High to DT Valid
15
ns
tRH
TFS/RFSOUT Hold after SCLK High
0
ns
tRD
TFS/RFSOUT Delay from SCLK High
15
ns
tSCDH
DT Hold after SCLK High
0
ns
tTDE
TFS (Alt) to DT Enable
0
ns
tTDV
TFS (Alt) to DT Valid
14
ns
tSCDD
SCLK High to DT Disable
15
ns
tRDV
RFS (Multichannel, Frame Delay Zero) to DT Valid
15
ns
CLKOUT
SCLK
TFSOUT
RFSOUT
DT
ALTERNATE
FRAME MODE
tCC
tSCS
tSCH
tRH
tSCDE
tSCDH
tSCDD
tTDE
tRDV
MULTICHANNEL
MODE,
FRAME DELAY 0
(MFD = 0)
DR
TFSIN
RFSIN
RFSOUT
TFSOUT
tTDV
tSCDV
tRD
tSCP
tSCK
tSCP
TFSIN
RFSIN
ALTERNATE
FRAME MODE
tRDV
MULTICHANNEL
MODE,
FRAME DELAY 0
(MFD = 0)
tTDV
tTDE
Figure 14. Serial Ports