AT94K ATMEL Corporation, AT94K Datasheet - Page 33

• Manufacturer Part Number: AT94K
• 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

Rev. 1138F–FPSLI–06/02
Table 10. FPSLIC System Control Register
Bit
SCR56
SCR57
SCR58 - SCR59
SCR60 - SCR61
SCR62
SCR63
Description
0 = Disable XTAL Pin (R
1 = Enable XTAL Pin (R
0 = Disable TOSC2 Pin (R
1 = Enable TOSC2 Pin (R
Reserved
SCR61 = 0, SCR60 = 0 “1”
SCR61 = 0, SCR60 = 1 AVR System Clock
SCR61 = 1, SCR60 = 0 Timer Oscillator Clock (TOSC1)
SCR61 = 1, SCR60 = 1 Watchdog Clock
Global Clock 6 mux select (set by using the AT94K Device Options in System
Designer).
Note:
0 = Disable CacheLogic Writes to FPGA by AVR
1 = Enable CacheLogic Writes to FPGA by AVR
0 = Disable Access (Read and Write) to SRAM by FPGA
1 = Enable Access (Read and Write) to SRAM by FPGA
1. The AS2 bit must be set in the ASSR register.
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AT94K Series FPSLIC
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