Altera USB Blaster - Manual (Page 7)

Pin
AS Mode PS Mode JTAG Mode
Signal Name Description Signal Name Description Signal Name Description
7
DATAOUT
Active serial
data out.
nSTATUS
Configuration
status.
— —
8
nCS
Serial
configuration
device chip
select.
— — — —
9
ASDI
Active serial
data in.
DATA0
Data to device.
TDI
Data to device.
10
GND
Signal ground.
GND
Signal ground.
GND
Signal ground.
Operating Conditions
Use the provided maximum ratings, recommended operating conditions and DC operating conditions to
ensure the correct usage of the USB-Blaster download cable.
Table 2-2: Absolute Maximum Ratings
Symbol Parameter Conditions Min Max Unit
V
CC(TRGT)
Target supply voltage With respect to ground –0.3 5.5 V
V
CC(USB)
USB supply voltage With respect to ground –0.5 6.0 V
I
I
Input current
TDO
or
dataout
–10.0 10.0 mA
I
o
Output current for Rev.
A or Rev. B cable
TCK
,
TMS
,
TDI
,
nCS
,
nCE
–20.0 20.0 mA
Output current for Rev.
C cable
–50.0 50.0 mA
Table 2-3: Recommended Operating Conditions
Symbol Parameter Conditions Min Max Unit
V
CC(TRGT)
Target supply voltage,
5.0-V operation
— 4.75 5.25 V
Target supply voltage,
3.3-V operation
— 3.0 3.6 V
Target supply voltage,
2.5-V operation
— 2.375 2.625 mA
Target supply voltage,
1.8-V operation
— 1.71 1.89 mA
Target supply voltage,
1.5-V operation
— 1.43 1.57 mA
UG-USB81204
2015.05.04
Operating Conditions 2-3
Specifications for USB-Blaster Download Cable Altera Corporation
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