参数资料
型号: OR4E063BA352-DB
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
英文描述: FPGA, 2024 CLBS, 515000 GATES, PBGA352
封装: PLASTIC, BGA-352
文件页数: 118/151页
文件大小: 2680K
代理商: OR4E063BA352-DB
Lattice Semiconductor
69
Data Sheet
September, 2002
ORCA Series 4 FPGAs
FPGA Conguration Modes (continued)
5-9738(F).b
Figure 41. PowerPC/MPI Conguration Schematic
Conguration readback can also be performed via the MPI when it is in user mode. The MPI is enabled in user
mode by setting the MP_USER_ENABLE bit to 1 in the conguration control register prior to the start of congura-
tion or through a conguration option. To perform readback, the host processor writes the 14-bit readback start
address to the readback address registers and sets the SYS_RD_CFG bit to one, then back to zero in the congu-
ration control register. Readback data is returned 8 bits at a time to the readback data register and is valid when the
DATA_RDY bit of the status register is 1. There is no error checking during readback. A ow chart of the MPI read-
back operation is shown in Figure 43. The RD_DATA pin used for dedicated FPGA readback is invalid during MPI
readback.
DOUT
CCLK
D[0:n]
PPC_A[14:31]
MPI_CLK
MPI_RW
MPI_ACK
MPI_BDIP
MPI_IRQ
MPI_STRB
CS0
CS1
HDC
LDC
D[0:n]
A[14:31]
CLKOUT
RD/WR
TA
BDIP
IRQx
TS
TO DAISY-
CHAINED
DEVICES
POWERPC
ORCA
8, 16, 32
FPGA
SERIES 4
DONE
INIT
BUS
CONTROLLER
DP[0:m]
1, 2, 4
MPI_BURST
BURST
MPI_TEA
TEA
MPI_RTRY
RETRY
MPI_TSZ[0:1]
TSZ[0:1]
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