cx28394 Conexant Systems, Inc., cx28394 Datasheet - Page 56

• Manufacturer Part Number: cx28394
• Description: Quad/x16/octal-t1/e1/j1 Framers
• Manufacturer: Conexant Systems, Inc.

1.0 Product Description
1.2 Pin Assignments
Table 1-6. Hardware Signal Definitions (8 of 9)
1-38
TCK
TDI1, TDI2
TDI
TMS
TDO
TDO1, TDO2
TRST*
VDD
VSS
VGG
Pin Label
JTAG Clock
JTAG Test Data
Input
JTAG Test Data
Input
JTAG Test mode
Select
JTAG Test Data
Output
JTAG Test Data
Output
JTAG Reset
Power
Ground
High Voltage
Power
Signal Name
Device
4, 5, 8
4, 5, 8
4, 5, 8
4, 5, 8
4, 5, 8
4, 5, 8
Joint Test Access Group (JTAG)
4, 8
4, 8
5
5
(1)
Power Supply
Conexant
I/O
O
O
I
I
I
I
I
I
I
I
Clock input samples TDI on rising edge and outputs TDO
on falling edge.
Test data input per IEEE Std 1149.1-1990. Used for
loading all serial instructions and data into internal test
logic. Sampled on the rising edge of TCK. TDI can be left
unconnected if it is not being used because it is pulled up
internally. TDI1 is the test data input for framers 1 to 8,
TDI2 is the test data input for framers 9 to 16.
Test data input per IEEE Std 1149.1-1990. Used for
loading all serial instructions and data into internal test
logic. Sampled on the rising edge of TCK. TDI can be left
unconnected if it is not being used because it is pulled up
internally.
Active low test mode select input per IEEE Std
1149.1-1990. Internally pulled-up input signal used to
control the test-logic state machine. Sampled on the
rising edge of TCK. TMS can be left unconnected if it is
not being used because it is pulled up internally.
Test data output per IEEE Std 1149.1-1990. TDO is a
three-state output used for reading all serial
configuration and test data from internal test logic.
Updated on the falling edge of TCK.
Test data output per IEEE Std, 1149.1-1990. TDO is a
three-state output used for reading all serial
configuration and test data from internal test logic.
Updated on the falling edge of TCK. TDO1 is the test data
output for framers1 to 8, TDO2 is the test data output for
framers 9 to 16.
Active low input to initialize Tap Controller.
+3.3 Vdc 5%.
0 Vdc.
+3.3 Vdc 5%. Connect to +5 Vdc 5% to ensure 5 V
tolerance in applications which include 5 V logic driving
signals.
Quad/x16/Octal—T1/E1/J1 Framers
Definition
CX28394/28395/28398
100054E