SCD1283 datasheet(85/94 Pages) INTEL

85 / 94 page

IEEE 1284-Compatible Parallel Interface — CD1283

Datasheet

Table 13. Synchronous Timing Reference Parameters

Timing

Number

Figure

Parameter

MIN

MAX

Unit

Setup time, CS* and DS* to C1 rising edge

Setup time, R/W* to C1 rising edge

Setup time, address valid to C1 rising edge

C2 rising edge to data valid

DTACK* low from C3 rising edge1

CS* and DS* trailing edge to data bus high-impedance

CS* and DS* inactive between host accesses

Hold time, R/W* after C3 rising edge

Hold time, address valid after C3 rising edge

t10

Setup time, write data valid to C2 rising edge

t11

Setup time, DS* and DGRANT* to C1 rising edge

t12

Setup time, SVCACK* to DS* and DGRANT*

t13

Hold time, write data valid after C3 rising edge

t14

Propagation delay, DS* and DGRANT* to DPASS*

t15

Falling edge DMAREQ* after rising edge CLK (DMA write/read)

t16

Hold time, rising edge DMAREQ* after falling edge DMAACK*

(DMA write/read)

t17

Setup time, data valid before rising edge C3 (DMA write)

t18

Setup time, falling edge DMAACK* to falling edge C1 (DMA write/read)

t21

DTACK* active pull-up time2

t22

Hold time, data valid after rising edge C3 (DMA write)

t23

Hold time, data valid after rising edge C1 (DMA read)

t24

Data valid after falling edge C1 (DMA read)

t25

Inactive time, DMAACK* (DMA read)

NOTES:

1. On host I/O cycles immediately following SVCACK* cycles and writes to the EOSRR, DTACK* will be delayed by 20 CLKs (1

ms @ 20 MHz, 800 ns @ 25 MHz). On systems that do not use DTACK* to signal the end of the I/O cycle, use wait states or

some other form of delay generation to assure that the CD1283 is not accessed until after this time period.

2. DTACK* sources current (drives ‘high’) until the voltage on the DTACK* line is approximately 1.5 V; then DTACK* enters the

‘open-drain’ (high-impedance) state.

SCD1283 bảng dữ liệu(PDF) 85 Page - Intel Corporation

SCD1283 bảng dữ liệu(HTML) 85 Page - Intel Corporation

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 90 91 92 93 94

bảng dữ liệu tải về

Link URL