M66596FP datasheet(85/131 Pages) RENESAS

Part #	M66596FP

Description	ASSP (USB2.0 Dual Function Controller)

PDF	131 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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85 / 131 page

M66596FP/WG

rev .1.00

2006.3.14

page 85 of 127

3.4.4.2 Timing at which the FIFO port can be accessed after reading/writing has been completed when

using a double buffer

Figure 3.24 shows the timing at which, when using a pipe with a double buffer, the other buffer can be accessed after

reading from or writing to one buffer has been completed.

When using a double buffer, access to the FIFO port should be carried out after waiting 300 ns after the access made

just prior to toggling.

The same timing applies when a short packet is being sent based on the “BVAL=1” setting using the IN direction

pipe.

Indefinite

WR_N /

RD_N

CURPIPE

FRDY

DTLN

max 300ns

min 20ns

PIPE-A

Buffer-A

Buffer-B

Access just prior to buffer toggling

Figure 3.24. Timing at which the FRDY and DTLN bits are determined after reading from or writing to a

double buffer has been completed

M66596FP Datasheet(PDF) 85 Page - Renesas Technology Corp