at94k05al-25aqi ATMEL Corporation, at94k05al-25aqi Datasheet - Page 32
at94k05al-25aqi
Manufacturer Part Number
at94k05al-25aqi
Description
5k - 40k Gates Of At40k Fpga With 8-bit Microcontroller, Up To 36k Bytes Of Sram And On-chip Jtag Ice
Manufacturer
ATMEL Corporation
Datasheet
1.AT94K05AL-25AQI.pdf
(192 pages)
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AT94K Series FPSLIC
Table 10. FPSLIC System Control Register
Bit
SCR32 - SCR34
SCR35
SCR36
SCR37
SCR38
SCR39
SCR40 - SCR41
SCR 42 -
SCR47
SCR48
SCR49
SCR50
SCR51
SCR52
SCR53
SCR54
SCR55
Description
Reserved
0 = AVR Reset Pin Disabled
1 = AVR Reset Pin Enabled (active Low Reset)
SCR35 allows the AVR Reset pin to reset the AVR only.
0 = Protect AVR Program SRAM
1 = Allow Writes to AVR Program SRAM (Excluding Boot Block)
SCR36 protects AVR program code from writes by the FPGA.
0 = AVR Program SRAM Boot Block Protect
1 = AVR Program SRAM Boot Block Allows Overwrite
0 = (default) Frame Clock Inverted to AVR Data/Program SRAM
1 = Non-inverting Clock Into AVR Data/Program SRAM
Reserved
SCR41 = 0, SCR40 = 0 16 Kbytes x 16 Program/4 Kbytes x 8 Data
SCR41 = 0, SCR40 = 1 14 Kbytes x 16 Program/8 Kbytes x 8 Data
SCR41 = 1, SCR40 = 0 12 Kbytes x 16 Program/12 Kbytes x 8 Data
SCR41 = 1, SCR40 = 1 10 Kbytes x 16 Program/16 Kbytes x 8 Data
SCR40 : SCR41 AVR program/data SRAM partitioning (set by using the AT94K
Device Options in System Designer).
Reserved
0 = EXT-INT0 Driven By Port E<4>
1 = EXT-INT0 Driven By INTP0 pad
SCR48 : SCR53 Defaults dependent on package selected.
0 = EXT-INT1 Driven By Port E<5>
1 = EXT-INT1 Driven By INTP1 pad
SCR48 : SCR53 Defaults dependent on package selected.
0 = EXT-INT2 Driven By Port E<6>
1 = EXT-INT2 Driven By INTP2 pad
SCR48 : SCR53 Defaults dependent on package selected.
0 = EXT-INT3 Driven By Port E<7>
1 = EXT-INT3 Driven By INTP3 pad
SCR48 : SCR53 Defaults dependent on package selected.
0 = UART0 Pins Assigned to Port E<1:0>
1 = UART0 Pins Assigned to UART0 pads
SCR48 : SCR53 Defaults dependent on package selected.
0 = UART1 Pins Assigned to Port E<3:2>
1 = UART1 Pins Assigned to UART1 pads
SCR48 : SCR53 Defaults dependent on package selected.
On packages less than 144-pins, there is reduced access to AVR ports. Port D is
not available externally in the smallest package and Port E becomes dual-purpose
I/O to maintain access to the UARTs and external interrupt pins. The Pin List (East
Side) on page 177 shows exactly which pins are available in each package.
0 = AVR Port D I/O With 6 mA Drive
1 = AVR Port D I/O With 20 mA Drive
0 = AVR Port E I/O With 6 mA Drive
1 = AVR Port E I/O With 20 mA Drive
Rev. 1138F–FPSLI–06/02
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