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Altera USB Blaster User Manual Page 6

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Cable-to-Board Connection
The USB-Blaster has a 10-pin female connector, which plugs into a 10-pin male header on the device
board. The male header consists of two rows of five pins, which are connected to the programming or
configuration pins of the device.
A 10-pin surface mount header can be used for the JTAG, AS, or PS download cable. However, Altera
recommends using a through-hole connector because of the repeated insertion and removal force needed.
Figure 2-3: Connectors and Dimensions
0.023 Sq .
0.235
0.100
Side View
0.100
Top View
Dimensions are in inches
10-pin Male Header
0.250 Typ.
0.700 Typ.
0.425 Typ.
0.100 Sq.
10
9
8
7
6
5
4
3
2
1
0.025 Sq.
Spacing between pin centers is 0.1 inches.
10-pin Female Connector
(USB-Blaster Download Cable) (Device Board)
Pin Description
The following table lists the pins of the USB-Blaster female plug and describes their functions in the
JTAG, active serial and passive serial modes.
Table 2-1: Signal Names of the USB-Blaster Female Plug
Pin
AS Mode PS Mode JTAG Mode
Signal Name Description Signal Name Description Signal Name Description
1 DCLK Clock signal. DCLK Clock signal. TCK Clock signal.
2 GND Signal ground. GND Signal ground. GND Signal ground.
3 CONF_DONE Configuration
done.
CONF_DONE Configuration
done.
TDO Data from device.
4 V
CC(TRGT)
Target power
supplied by
the device
board.
V
CC(TRGT)
Target power
supplied by
the device
board.
V
CC(TRGT)
Target power supplied
by the device board.
5 nCONFIG Configuration
control.
nCONFIG Configuration
control.
TMS JTAG state machine
control.
6 nCE Cyclone chip
enable.
— — PROC_RST Active-low signal for
hard processor reset.
2-2
Cable-to-Board Connection
UG-USB81204
2015.05.04
Altera Corporation
Specifications for USB-Blaster Download Cable
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