cx28250 Mindspeed Technologies, cx28250 Datasheet - Page 183

• Manufacturer Part Number: cx28250
• Description: Cx28250 Atm Physical Interface Phy Devices
• Manufacturer: Mindspeed Technologies

CX28250
ATM Physical Interface (PHY) Devices
5.1.4 JTAG Interface Timing
Figure 5-9. JTAG Timing Diagram
Table 5-8. JTAG Timing Table
28250-DSH-002-C
Symbol
t
t
t
t
t
t
t
t
t
t
t
pwh
pwl
dis
rec
per
pd
h1
h2
en
s1
s2
TRST*
TDO
TMS
TCK
TDI
t rec
Enable, TDO from the falling edge of TCK
Propagation Delay, TDO from the falling edge of TCK
Setup, TDI to the rising edge of TCK
Setup, TMS to the rising edge of TCK
Hold, TDI from the rising edge of TCK
Hold, TMS from the rising edge of TCK
Pulse width high, TCK
Pulse width low, TCK
Disable, TDO from the falling edge of TCK
Recovery time, TCK from the rising edge of TRST*
Period, TCK
Figure 5-9
JTAG interface.
Description
t per
Mindspeed Technologies
and
t en
Table 5-8
t s1
t s2
VALID
VALID
t h1
t h2
define the timing requirements and characteristics of the
t pwh
VALID
5.0 Electrical and Mechanical Specifications
™
t pwl
t pd
Min
0.6
0.6
0.8
2.5
16
16
40
2
2
6
6
VALID
Max
—
—
—
—
—
—
—
—
5
5
5
5.1 Timing Specifications
t dis
500035_036
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5-17