Cypress Semiconductor Perform CY7C1372D Betriebsanweisung PDF herunterladen (Seite 74)

Port Direction Function

reset In Global reset for the component

d_clk In The system clock for the system interface.

d_ce In The system clock enable.

rden In Read enable for the application FIFO.

dout Out Data from the internal FIFO to the system.

dvalid Out Data valid, synchronous to d_clk, indicates that

data is valid when true.

fs In A/D sample rate clock

trigger In A/D trigger. When true, samples are stored in the

external FIFO.

test In Test mode select. When true, an incrementing

count is substituted for the data for system test.

fifo_ae Out The internal FIFO is almost empty when true.

adc_ovr In ADC overrange bit. When true, the ADC detected

an overrange on the sample. This bit is appended

to each sample as bit 15 into the external FIFO.

adc_d(13:0) In ADC data from the external FIFO.

adc_ext_fifo_wen_n Out Write enable to the external FIFO, active low. This

signal is true when the trigger is true.

adc_ext_fifo_ren_n Out Read enable to the external FIFO, active low. This

signal is true when data is moved from the

external FIFO to the internal FIFO.

adc_ext_fifo_reset_n Out Reset to the external FIFO, active low.

adc_ext_fifo_ae_n In External FIFO almost empty, active low. When

true the external FIFO has less then 511 samples

(when adc_fsel = “10”).

adc_ext_fifo_ir_n In External FIFO input is ready, active low. When

true, there is room in the external FIFO for more

samples to be collected.

adc_clk_p

adc_clk_n

Out The A/D sample clock output differential pair.

Signal standard is PECL.

adc_ext_fifo_rclk Out External FIFO data read clock, equal to fs..

adc_ext_fifo_wclk Out External FIFO data write clock, equal to fs.

adc_ext_fifo_fsel(1:0) Out External FIFO flag select. See table below.

adc_ext_fifo_ld Out External FIFO load. Sets FIFO flag levels

according to table below. See TI SN74V283

datasheet for complete details.

Table 12ii_quixote_adc Component Ports

Innovative Integration FrameWork Logic User Guide 74

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 96 97

Keine Kommentare

Cypress Semiconductor Perform CY7C1372D Betriebsanweisung Seite 74