CX28398 Conexant Systems, CX28398 Datasheet - Page 272

• Manufacturer Part Number: CX28398
• Description: (CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers
• Manufacturer: Conexant Systems

4.0 Electrical/Mechanical Specifications
4.7 JTAG Interface Timing
Table 4-17. Test and Diagnostic Interface Timing Requirements
Table 4-18. Test and Diagnostic Interface Switching Characteristics
Figure 4-22. JTAG Interface Timing
4-24
Symbol
Symbol
1
2
3
4
5
6
7
8
TDO
TCK
TDI
TMS
TCK pulse width high
TCK pulse width low
TMS, TDI setup to TCK rising edge
TMS, TDI hold after TCK high
TDO hold after TCK falling edge
TDO delay after TCK low
TDO enable (Low Z) after TCK falling edge
TDO disable (High Z) after TCK low
7
4.7 JTAG Interface Timing
3
Parameter
Parameter
4
1
Conexant
5
6
2
Minimum
Minimum
80
80
20
—
10
—
5
0
Quad/x16/Octal—T1/E1/J1 Framers
CX28394/28395/28398
Maximum
Maximum
—
—
—
—
—
20
—
10
8
Units
Units
100054E
ns
ns
ns
ns
ns
ns
ns
ns