Sundance SMT395 - Manual (Page 10)

Version 1.1.7 Page 10 of 26 SMT395 User Manual
EMIF Control Registers
The C6416 has two external memory interfaces (EMIFs). One of these is 64 bits
wide, the other 16 bits.
The C60 contains several registers that control the external memory interfaces
(EMIFs). A full description of these registers can be found in the C60 Peripherals
Reference Guide[0].
The standard bootstrap will initialise these registers to use the following
resources:
Memory space
(EMIFA)
Resource Address range
Internal program memory
(1M) 0x00000000 - 0x000FFFFF
CE0 SDRAM (256M) 0x80000000 - 0x8FFFFFFF
CE1 Virtex 0x90000000 - 0x900FFFFF
Memory space
(EMIFB)
Resource Address range
CE1 8Mbyte flash in 4 pages.
Page selected with GPIO9
and GPIO10
0x64000000 – 0x641FFFFF
CE2 Any access asserts FPGA
PROG line 0x68000000 – 0x641FFFFF
CE3 A write programs data bit
D0 serially in the FPGA and
make a CCLK edge. 0x68000000 – 0x641FFFFF
The boot code sets-up the EMIF as follows:
GBCTLA = 0x0001277C ;
CECTL0A = 0x000000D0;
CECTL1A = 0x000000A0;
SDCTRLA = 0x6A227000;
CECTL1B = 0xFFFFFF13;
CECTL2B = 0xFFFFFF23;
CECTL3B = 0x105FFF23;
SDEXTA = 0x00017F3F