CN8478 Datasheet, PDF (199/221 Pages) Conexant Systems, Inc – Multichannel Synchronous Communications Controller (MUSYCC)

CN8478/CN8474A/CN8472A/CN8471A
7.0 Electrical and Mechanical Specifications
Multichannel Synchronous Communications Controller (MUSYCC™)
7.2 Timing and Switching Specifications
Table 7-13. EBUS I/O Measure Conditions
Symbol
Parameter
Value
Units
V_th
Voltage Threshold High⁽¹⁾
V_tl
Voltage Threshold Low⁽¹⁾
V_test
Voltage Test Point
V_max
Maximum Peak-to-Peak⁽²⁾
—
Input Signal Edge Rate
0.6 V_dd
V
0.2 V_dd
V
0.4 V_dd
V
0.4 V_dd
V
1
V/ns
NOTE(S):
(1) _{The input test for the 3.3 V environment is done with 0.1 Vdd of overdrive (over Vih and Vil). Timing parameters must be met}
with no more overdrive than this. Production testing can use different voltage values, but must correlate results back to these
parameters.
(2) _{Vmax specifies the maximum peak-to-peak voltage waveform allowed for measuring input timing. Production testing can use}
different voltage values, but must correlate results back to these parameters.
Figure 7-11. EBUS Output Timing Waveform
PCLK
Output
Delay
8478_033
V_th
V_test
V_tl
T_val
V_test
Figure 7-12. EBUS Input Timing Waveform
PCLK
Input
8478_034
V_test
T_ds
T_dh
V_th
V_test
V_tl
V_test
V_th
V_tl
V_max
100660E
Conexant
7-13