Digital Voice Systems AMBE-2000 - Low Level Timing for Passive and Active Serial Mode

AMBE-2000™ Vocoder Chip Users Manual
Version 4.92, June, 08
DVSI Confidential Proprietary, Subject to Change Page 26
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4.3.1 Low Level Timing for Passive and Active Serial Mode
Figure 4-B Low Level Timing for Passive and Active Serial Mode
1 2 15
16
~
~ ~
~ ~
~
CHAN_TX_CLK
CHAN_TX_STRB
CHAN_TX_DATA
~
~
t
d(FSX)
t
h(FSX)H
t
w(SCK)
t
r(SCK)
t
f(SCK)
t
dis(DX)
t
h(DX)
t
w(SCK)
1 2 15
16
~ ~
~ ~
~ ~
~ ~
CHAN_RX_CLK
CHAN_RX_STRB
CHAN_RX_DATA
t
h(FSR)
t
su(FSR)
t
c(SCK)
t
w(SCK)
t
w(SCK)
t
r(SCK)
t
f(SCK)
t
su(DR)
t
h(DR)
t
c(SCK)
t
h(FSX)
MSB LSB
MSB
LSB
t
d(DX)
Table 4-D Switching Characteristics Over Recommended Operating Conditions for Serial Port
Receive
3.3 Volts
Reference Parameter
Min Max
Units
t
h(FSR)
Hold time, FSR after CLKR falling edge
6 ns
t
h(DR)
Hold time, DR after CLKR falling edge
6 ns