D950-CORE datasheet(78/89 Pages) STMICROELECTRONICS

78 / 89 page

78/89

D950-Core

7.4.2 I/O interface

The terms input and output are related to the DMA controller, external is related to the AS-

DSP.

Referring to the D950-Core pin description, the interrupt controller I/O interface signals are of

different types:

On the D950-Core Side

•HOLD (hold request / output)

•

HOLDACK (hold acknowledge / input)

•

CLK (clock / input)

•

INCYCLE (clock / input)

On the Internal Memory Side

•

XA0/XA15 (Y address bus) with associated control signals (output):

XRD (read / output)

XWR (write / output)

XBS (bus strobe / output)

•

YA0/YA15 (Y address bus) and YD0/YD15 (Y data bus) with their associated

control signals (clock / input):

YRD (read / input/output)

YWR (write / input/output)

YBS (bus strobe / output)

•

IA0/IA15 (I address bus) with associated control signals (output):

IRD (read / output)

IWR (write / output)

IBS (bus strobe / output)

On the Interrupt Controller Side

•

DIT(3:0) (interrupt request / output)

•DIT_AND (common interrupt request / output)

On the External Side

•DMARQ(3:0) (request / one input per channel)

•

DMACK(3:0) (acknowledge / one output per channel)

•

DIP_ENA (DITi output enable / input)

•

RESET (reset / input)

•DTACK (cycle extension / input),

D950-CORE Datasheet(PDF) 78 Page - STMicroelectronics

D950-CORE Datasheet(HTML) 78 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89

Datasheet Download

Link URL