MT8926 Zarlink Semiconductor, MT8926 Datasheet - Page 28

• Manufacturer Part Number: MT8926
• Description: T1 Performance Monitoring Adjunct Circuit (PMAC)
• Manufacturer: Zarlink Semiconductor

SEMICMF.019
Data Sheet
AC Electrical Characteristics
† Timing is over recommended temperature & power supply voltage ranges.
‡ Typical figures are at 25 C and are for design aid only; not guaranteed and not subject to production testing
Note
are being transmitted on DSTo.
Note
DSTi1 are not overwritten, but passes through the PMAC unaltered to the DSTo output.
DATA
ECLK
E8Ki
E8Ko
1
2
3
4
¿
¦
- The ST-BUS stream being received on CSTi0 is not being overwritten, but passes through the PMAC unaltered. DSTi0 and
- The PMAC is overwriting some of the bits received on CSTi0, and transmitting the aggregate on CSTo. Line loopback codes
2.25V
2.25V
Clock to Output Delay
ST-BUS Setup Time
ST-BUS Hold Time
Serial Output Delay
2.4 V
0.4 V
0.8V
0.8V
Parameters
¦
Channel 2
¿
Bit 1
t
8PD
t
8S
Figure 12 - 8kHz Extracted Framing Signal
†
- 2048 kBit/s ST-BUS Streams (Figures 13 and 14)
Sym
t
t
t
t
COD
SOD
STH
STS
Min
t
15
50
8IL
Channel 17
Typ
t
8PD
Bit 2
‡
t
8S
Max
125
35
15
40
Units
ns
ns
ns
ns
150 pF load
150 pF load CSTo
150 pF load DSTo
50 pF load CSTo
.
t
8IH
Test Conditions
Channel 2
Bit 1
MT8926
27