Bt8370/8375/8376
5.0 Electrical/Mechanical Specifications
5.7 JTAG Interface Timing
Fully Integrated T1/E1 Framer and Line Interface
5.7 JTAG Interface Timing
Table 5-17. Test and Diagnostic Interface Timing Requirements
Symbol
Parameter
Minimum
Maximum
Units
1
2
3
4
TCK pulse width high
TCK pulse width low
80
80
20
20
—
—
—
—
ns
ns
ns
ns
TMS, TDI setup to TCK rising edge
TMS, TDI hold after TCK high
Table 5-18. Test and Diagnostic Interface Switching Characteristics
Symbol
Parameter
Minimum
Maximum
Units
5
6
7
8
TDO hold after TCK falling edge
TDO delay after TCK low
0
—
2
—
50
—
25
ns
ns
ns
ns
TDO enable (Low Z) after TCK falling edge
TDO disable (High Z) after TCK low
—
Figure 5-20. JTAG Interface Timing
TDO
7
5
8
1
6
TCK
2
3
4
TDI
TMS
N8370DSE
Conexant
5-23