AT6002-2AC datasheet(10/28 Pages) ATMEL

10 / 28 page

AT6000(LV) Series

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

100 VQFP

80 I/O

132 PQFP

96 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

Parallel

Preamble

2677

4153

8077

16393

Parallel

Preamble

2677

4153

8077

16393

Serial

Null Byte/Preamble

2678

4154

8078

16394

Serial

Null Byte/Preamble

2678

4154

8078

16394

Parallel

Preamble

2677

4153

8077

16393

Parallel

Preamble/Preamble

2678

4154

8078

16394

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