MT90823
Data Sheet
AC Electrical Characteristics - Serial Streams for ST-BUS and GCI Backplanes
Characteristic
Sym. Min. Typ. Max. Units
Test Conditions
1 Sti Set-up Time
tSIS
0
ns
2 Sti Hold Time
tSIH
10
ns
3 Sto Delay - Active to Active
4 STo delay - Active to High-Z
5 Sto delay - High-Z to Active
6 Output Driver Enable (ODE)
Delay
tSOD
tDZ
tZD
tODE
30
ns CL=30pF
40
ns CL=200pF
32
RL=1K, CL=200pF, See Note 1
32
RL=1K, CL=200pF, See Note 1
32
ns RL=1K, CL=200pF, See Note 1
7 CSTo Output Delay
tXCD
30
ns CL=30pF
40
ns CL=200pF
Note:
1. High Impedance is measured by pulling to the appropriate rail with RL, with timing corrected to cancel time taken to discharge CL.
F0i
CLK
STo
STi
tFPW
tFPS tFPH
tCP
tCH
tCL
tr
tSOD
tf
Bit 0, Last Ch (Note1)
Bit 7, Channel 0
tSIS
tSIH
Bit 6, Channel 0
Bit 5, Channel 0
Bit 0, Last Ch (Note1)
Bit 7, Channel 0
Bit 6, Channel 0
Bit 5, Channel 0
VCT
VVVTHLTMM
VCT
VCT
Note 1:
2.048 Mb/s mode, last channel = ch 31,
4.196 Mb/s mode, last channel = ch 63,
8.192 Mb/s mode, last channel = ch 127.
Figure 11 - ST-BUS Timing for 2.048 Mb/s and High Speed Serial Interface at 4.096 Mb/s
or 8.192 Mb/s, when WFPS pin = 0.
33
Zarlink Semiconductor Inc.