User's Manual

Electrical Specifications DTS-800 Reference Manual Application Information
01-DTS800 CDK-1 X1 AnyDATA.NET Proprietary – Use Subject to
Restrictions 19
4.2 Timing characteristics
4.2.1 External CODEC Timing
• External PCM CODEC to Modem timing
• Modem to External PCM CODEC timing
PARAMETER DESCRIPTION MIN TYP. MAX UNIT
t
clk
PCM-CLK cycle time 400 500 ns
t
clkl
PCM-CLK low time 200 250 ns
t
clkh
PCM-CLK high time 200 250 ns
t
su(sync)
PCM_SYNC setup time to PCM_CLK falling 150 ns
t
h(sync)
PCM_SYNC hold time after PCM_CLK falling 350 ns
t
su(din)
PCM_DIN setup time to PCM_CLK falling 50 ns
t
h(din)
PCM_DIN hold time after PCM_CLK falling 10 ns
t
pdout
Delay from PCM_CLK falling to PCM_DOUT 50 ns
• External PCM CODEC Parameters
t
clk
t
clkl
t
clkh
t
su(sync)
t
h(sync)
t
su(din)
t
h(din)
MSB
LSB
PCM _CLK
PCM _SYNC
PCM _DIN
t
clk
t
clkl
t
clkh
t
su(sync)
t
h(sync)
MSB LSB
PCM _C LK
PCM _SYN C
PCM_DOUT
t
pdout
t
pdout
t
zdout