Installation and set-up
CPLD pins
Signal
Parallel port pins
76 ParSCTL
13
77 ParPE
12
78 Parnwait
11
79 ParINIT
10
80 Pardata7
9
81 Pardata6
8
82 Pardata5
7
85 Pardata4
6
86 Pardata3
5
89 Paraddr
17
90 Pardata2
4
91 Parnreset
16
92 Pardata1
3
93 Parnerror
15
94 Pardata0
2
95 Parndata
14
96 Parnwrite
1
The CPLD has 3 address pins. When the CPLD is communicating with the parallel port data lines, the 8
values within the 3-bit CPLD address are used as follows:
Address value
Description
0
Read and write (i.e. data pins) when FPGA is in parallel port control mode
1
Read and write from host for SmartMedia
2 Not
used
3
Read status of signals (8-bit data line from CPLD):
Bit 0: Master FPGA DONE signal
Bit 1: (not used; undefined)
Bit 2: FPGA nINIT signal
Bit 3: SmartMedia nBUSY signal
Bit 4: SmartMedia Detect (1 = SmartMedia inserted)
Bit 5: SmartMedia not Write Protect
Bit 6: SmartMedia state machine disable status
Bit 7: PLL data line (I
2
C bus)
Write status of signals:
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