34-41
MB86R02 ‘Jade-D’ Hardware Manual V1.64
34.5.14
MediaLB Signal Timing
34.5.14.1
MediaLB AC Spec Type A
Ground = 0V; Load capacitance = 60pF; MediaLB speed = 256Fs or 512Fs; Fs = 48kHz; all timing
parameters specified from the valid voltage threshold as listed below; unless otherwise noted.
9.1.1.1.0.
Clock
Table 34-36 AC Timing of Clock Signal
Signal
Symbol
Description
Value
Unit
Comment
Min.
Typ.
Max.
MLBCLK
f
mck
MLBCLK operating
frequency (*1)
11.264
–
–
–
22.5792
–
–
–
24.6272
MHz
256xFs at
44.0kHz
512xFs at
44.1kHz
512xFs at
48.1kHz
t
mckr
MLBCLK rising time
–
–
3
ns V
IL
to V
IH
t
mckf
MLBCLK falling time
–
–
3
ns V
IH
to V
IL
t
mckc
MLBCLK cycle time
–
–
81
40
–
ns
256xFs
512xFs
t
mckl
MLBCLK low time
30
14
37
17
–
ns
256xFs
512xFs
t
mckh
MLBCLK high time
30
14
38
17
–
ns
256xFs
512xFs
t
mpwv
MLBCLK pulse width
variation
–
–
2
ns
pp
(*2)
*1: The controller can shut off MLBCLK to place MediaLB in a low-power state.
*2: Pulse width variation is measured at 1.25V by triggering on one edge of MLBCLK and measuring the
spread on the other edge, measured in ns peak-to-peak (pp).
9.1.1.1.1.
Input Signal
Table 34-37 AC Timing of Input Signal
Signal
Symbo
l
Description
Value
Unit
Comment
Min.
Typ.
Max.
MLBSIG, MLBDAT
input
t
dsmcf
MLBSIG and MLBDAT input
valid to MLBCLK falling
4
–
–
ns
t
dhmcf
MLBSIG and MLBDAT input
hold from MLBCLK low
0
–
–
ns
Output Signal
Table 34-38 AC Timing of Output Signal
Signal
Symbo
l
Description
Value
Unit
Comment
Min.
Typ.
Max.
MLBSIG, MLBDAT
Output
t
mcfdz
MLBSIG and MLBDAT output
high impedance from MLBCLK
low
0
–
t
mckl
ns
t
mdzh
Bus hold time
4
–
–
ns (*1)
Summary of Contents for MB86R02
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Page 497: ...18 139 MB86R02 Jade D Hardware Manual V1 64 VSYNC is output 1 dot clock faster than HSYNC ...
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