Rainbow Electronics AT6010LV - Manual (Page 10)

AT6000(LV) Series
10
memory to configure the FPGA. Addresses change after
the rising edge of the CCLK signal.
CSOUT or I/O
When cascading devices, CSOUT is an output used to
enable other devices. CSOUT should be connected to the
CS input of the downstream device. The CSOUT function is
optional and can be disabled during initial programming
when cascading is not used. When cascading devices,
CSOUT should be dedicated to configuration and not used
as a configurable I/O.
CHECK or I/O
During configuration, CHECK is a TTL input that can be
used to enable the data check function at the beginning of
a configuration cycle. No data is written to the device while
CHECK is low. Instead, the configuration file being applied
to D0 (or D0 - D7, in parallel mode) is compared with the
current contents of the internal configuration RAM. If a mis-
match is detected between the data being loaded and the
data already in the RAM, the ERR pin goes low. The
CHECK function is optional and can be disabled during ini-
tial programming.
ERR or I/O
During configuration, ERR is an output. When the CHECK
function is activated and a mismatch is detected between
the current configuration data stream and the data already
loaded in the configuration RAM, ERR goes low. The ERR
ouput is a registered signal. Once a mismatch is found, the
signal is set and is only reset after the configuration cycle is
restarted. ERR is also asserted for configuration file errors.
The ERR function is optional and can be disabled during
initial programming.
Device Pinout Selection (Max. Number of User I/O)
AT6002 AT6003 AT6005 AT6010
84 PLCC 64 I/O 64 I/O 64 I/O -
100 VQFP 80 I/O 80 I/O 80 I/O -
132 PQFP 96 I/O 108 I/O 108 I/O 108 I/O
144 TQFP 95 I/O 120 I/O 108 I/O 120 I/O
208 PQFP - - - 172 I/O
240 PQFP - - - 204 I/O
Bit-stream Sizes
Mode(s) Type Beginning Sequence AT6002 AT6003 AT6005 AT6010
1 Parallel Preamble 2677 4153 8077 16393
2 Parallel Preamble 2677 4153 8077 16393
3 Serial Null Byte/Preamble 2678 4154 8078 16394
4 Serial Null Byte/Preamble 2678 4154 8078 16394
5 Parallel Preamble 2677 4153 8077 16393
6 Parallel Preamble/Preamble 2678 4154 8078 16394