Altera ByteBlaster II - Manual (Page 18)

2–2 Chapter 2: ByteBlaster II Specifications
ByteBlaster II Connections
ByteBlaster II Download Cable User Guide © July 2008 Altera Corporation
Cable-to-Board Connection
The ByteBlaster II cable has a standard parallel printer plug that connects to the PC.
Figure 2–1 shows a block diagram of the ByteBlaster II download cable.
ByteBlaster II 25-Pin Header Connection
The 25-pin male header connects to a parallel port with a standard parallel cable.
Table 2–2 identifies the plug pin names and the corresponding programming modes.
EPC4, EPC8, and EPC16 devices 3.3 V
EPCS1, EPCS4, EPCS16, EPCS64, and EPCS128 devices 3.3 V
Table 2–1. ByteBlaster II V
CC(TRGT)
Pin Voltage Requirements (Part 2 of 2)
Figure 2–1. ByteBlaster II Block Diagram
15
VCC
4
VCC
14
TRI
TRI
TRI
TRI
TRI
2
3
4
5
8
1
5
8
6
9
11
13
6
10
3
7
18 to 25
Series Resistors for Signal Quality
and Parallel Port Protection
(Typically 100 Ω) GND
2, 10
GND
Table 2–2. ByteBlaster II 25-Pin Header Pin-Outs (Part 1 of 2)
Pin
AS Mode PS Mode JTAG Mode
Signal Name Description Signal Name Description Signal Name Description
2 DCLK Clock signal DCLK Clock signal TCK Clock signal
3 nCONFIG Configuration control nCONFIG Configuration
control TMS JTAG state
machine control
4 nCS Serial configuration
device chip select — No connect — No connect