TS8GDOM40V-S datasheet(6/34 Pages) TRANSCEND

6 / 34 page

rra

d 4

0---P

Piiin

n IIID

E F

Fllla

h M

ullle

M ~

~ 1

V---S

Transcend Information Inc.

Ver 1.2

True IDE PIO Mode Read/Write Timing

Item

Mode

Cycle time (min)

600

383

240

180

120

100

Address Valid to -IORD/-IOWR setup (min)

-IORD/-IOWR (min)

165

125

100

-IORD/-IOWR (min) Register (8 bit)

290

t2i -IORD/-IOWR recovery time (min)

-IOWR data setup (min)

-IOWR data hold (min)

-IORD data setup (min)

-IORD data hold (min)

t6Z -IORD data tristate (max)

Address valid to IOCS16 assertion (max)

N/A

Address valid to IOCS16 released (max)

N/A

-IORD/-IOWR to address valid hold

tRD Read Data Valid to IORDY active (min), if

IORDY initially low after tA

tA IORDY Setup time

N/A

tB IORDY Pulse Width (max)

1250

N/A

tC IORDY assertion to release (max)

N/A

Notes: All timings are in nanoseconds. The maximum load on -IOCS16 is 1 LSTTL with a 50 pF (40pF below

120nsec Cycle Time) total load. All times are in nanoseconds. Minimum time from -IORDY high to -IORD

high is 0 nsec, but minimum -IORD width shall still be met.

(1) t0 is the minimum total cycle time, t2 is the minimum command active time, and t2i is the minimum

command recovery time or command inactive time. The actual cycle time equals the sum of the actual

command active time and the actual command inactive time. The three timing requirements of t0, t2, and

t2i shall be met. The minimum total cycle time requirement is greater than the sum of t2 and t2i. This means

a host implementation can lengthen either or both t2 or t2i to ensure that t0 is equal to or greater than the

value reported in the device’s identify device data.

(2) This parameter specifies the time from the negation edge of -IORD to the time that the data bus is

released by the device.

(3) The delay from the activation of -IORD or -IOWR until the state of IORDY is first sampled. If IORDY is

inactive then the host shall wait until IORDY is active before the PIO cycle can be completed. If the device

is not driving IORDY negated at tA after the activation of -IORD or -IOWR, then t5 shall be met and tRD is not

applicable. If the device is driving IORDY negated at the time tA after the activation of -IORD or -IOWR,

then tRD shall be met and t5 is not applicable.

(4) t7 and t8 apply only to modes 0, 1 and 2. For other modes, this signal is not valid.

(5) IORDY is not supported in this mode.

TS8GDOM40V-S датащи(PDF) 6 Page - Transcend Information. Inc.

TS8GDOM40V-S датащи(HTML) 6 Page - Transcend Information. Inc.

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

датащи скачать

ссылки URL