User's Manual

AnyDATA.NET Inc. AnyTime AnyPlace Any Wireless Data Solution
TM
Table 5-2 External PCM CODEC Parameters
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
5.2.2 LCD Timing
t
WRS
MCLK
(modem)
A[21:0]
LWR/
Write
Data[7:0]
LCD_CS/
RD/
LCD_E
Read
Data[7:0]
T
t
WRH
t
LCDES
t
LCDEHI
t
LCDEH
t
RDS
t
RDH
LCD Data Write
LCD Data Read
Figure 5-3 LCD Timing
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AD-2001-06-28 Ver 1.1
-31-