
3-26
DC and Switching Characteristics
LatticeECP/EC Family Data Sheet
Figure 3-12. sysCONFIG Parallel Port Read Cycle
Figure 3-13. sysCONFIG Parallel Port Write Cycle
CCLK
1
CS1N
CSN
WRITEN
BUSY
D[0:7]
t
SUCS
t
HCS
t
SUWD
t
CORD
t
DCB
t
HWD
t
BSCYC
t
BSCH
t
BSCL
1. In Master Parallel Mode the FPGA provides CCLK. In Slave Parallel Mode the external device provides CCLK.
Byte 0
Byte 1
Byte 2
Byte n
CCLK
1
CS1N
CSN
WRITEN
BUSY
D[0:7]
t
SUCS
t
HCS
t
SUWD
t
HCBDI
t
DCB
t
HWD
t
BSCYC
t
BSCH
t
BSCL
t
SUCBDI
Byte 0
Byte 1
Byte 2
Byte n
1. In Master Parallel Mode the FPGA provides CCLK. In Slave Parallel Mode the external device provides CCLK.