28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 194
![no-image](/images/manufacturer_photos/0/4/449/mindspeed_technologies_sml.jpg)
28478G-18
Manufacturer Part Number
28478G-18
Description
Multichannel Synchronous Communications Controller 208-Pin BGA
Manufacturer
Mindspeed Technologies
Datasheet
1.28478G-18.pdf
(195 pages)
Specifications of 28478G-18
Package
208BGA
Maximum Data Rate
32768 Kbps
Transmission Media Type
Wire
Power Supply Type
Analog
Typical Supply Current
250 mA
Typical Operating Supply Voltage
3.3 V
Minimum Operating Supply Voltage
3 V
Maximum Operating Supply Voltage
3.6 V
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A.2
The BYPASS register is a 1-bit shift register that passes TDI data to TDO, which facilitates testing other devices in
the scan path without having to shift the data patterns through the compare Boundary Scan register of the CN8478.
Table A-2.
Figure A-1.
28478-DSH-002-E
Label
t
t
t
t
t
t
t
pwh
t
dis1
dis2
pwl
per
rec
t
t
pd
en
s
h
8478_043
TRST~
Period, TCK
Pulse Width Low, TCK
Pulse Width High, TCK
Recovery, the rising edge of TCK from the rising edge of TRST~
Setup, TMS, TDI to the rising edge of TCK
Hold, TMS, TDI from the rising edge of TCK
Enable, TDO from the falling edge of TCK
Propagation Delay, TDO from the falling edge of TCK
Disable, TDO from the falling edge of TCK
Disable, TDO from the falling edge of TRST~
JTAG Timing Table
JTAG Timing Diagram
TMS
TDO
TCK
TDI
BYPASS Register
Preliminary Information / Mindspeed Proprietary and Confidential
t
t
rec
pwh
Mindspeed Technologies
Description
t
pwl
t
en
t
t
s
s
t
t
h
h
t
per
®
t
pd
0.4 t
0.4 t
Min
100
—
15
15
—
—
—
—
per
per
0.6 t
0.6 t
JTAG Interface
Max
100
100
—
—
—
15
15
15
t
t
dis1
dis2
per
per
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
181
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