Figure 9-30 – AMD Geode SC1201 User Manual

Page 409

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AMD Geode™ SC1200/SC1201 Processor Data Book

409

Electrical Specifications

32579B

Figure 9-30. Host Pausing an UltraDMA Data In Burst Timing Diagram

t

RP

IDE_DATA[15:0]

(device)

t

RFS

t

SR

IDE_IRDY0
(DSTROBE0)
(device)

IDE_IOR0#(HDMARDY0#)
(host)

IDE_IOW0#(STOP0#)
(host)

IDE_DACK0#
(host)

IDE_DREQ0
(device)

Notes:

1)

The host can assert IDE_IOW[0:1]# (STOP[0:1]#) to request termination of the UltraDMA burst no sooner than t

RP

after IDE_IOR[0:1]# (HDMARDY[0:1]#) is de-asserted.

2)

If the t

SR

timing is not satisfied, the host may receive up to two additional data WORDs from the device.

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