IDT79RC32332 IDT [Integrated Device Technology], IDT79RC32332 Datasheet - Page 37

• Manufacturer Part Number: IDT79RC32332
• Description: IDT Interprise Integrated Communications Processor
• Manufacturer: IDT [Integrated Device Technology]

functions should be considered when connecting
AC Test Conditions
IDT 79RC32355
Table 16 shows the pin numbering for the Standard EJTAG connector. All the even numbered pins are connected to ground. Multiplexing of pin
For details on using the JTAG connector, see the JTAG chapters in the RC32355 user reference manual.
1
3
5
7
9
11
13
15
17
19
21
23
1.
2.
unconnected.
PIN
The value of the series resistor may depend on the actual printed circuit board layout situation.
JTAG_TCK pull-up resistor is not required according to the JTAG (IEEE1149) standard. It is indicated here to prevent a floating CMOS input when the EJTAG connector is
EJTAG_TRST_N
JTAG_TDI
JTAG_TDO
JTAG_TMS
JTAG_TCK
System Reset
EJTAG_PCST[0]
EJTAG_PCST[1]
EJTAG_PCST[2]
EJTAG_DCLK
Debug Boot
V
CC
SIGNAL
I/O
RC32355
RC32355 I/O
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Table 16 Pin Numbering of the JTAG and EJTAG Target Connector
Input pulse levels
Input rise/fall
Input reference level
Output reference levels
AC test load
EJTAG_TRST_N and EJTAG_PCST.
Parameter
10 kΩ pull-down resistor. A pull-down resistor will hold the EJTAG controller in reset when not in use
if the EJTAG_TRST_N function is selected with the boot configuration vector. Refer to the User Man-
ual.
10 kΩ pull-up resistor
33 Ω series resistor
10 kΩ pull-up resistor
10 kΩ pull-up resistor
10 kΩ pull-up resistor is used if it is combined with the system cold reset control, COLDRSTN.
33 Ω series resistor
33 Ω series resistor
33 Ω series resistor
33 Ω series resistor
This can be connected to the boot configuration vector to control debug boot mode if desired. Refer
to Table 2 on page 12 and the RC32355 user reference manual.
Used to sense the circuit board power. Must be connected to the VCC I/O supply of the circuit board.
Figure 21 Output Loading for AC Timing
.
37 of 47
2
50 Ω
Value
0 to 3.0
3.5
1.5
1.5
25
TERMINATION
Units
50 Ω
pF
ns
V
V
V
1.5V
1
Test
Point
May 25, 2004