TS8G~16GCF600

600X CompactFlash Card

 

 

 

￿Ultra DMA Electrical Requirements

￿Host and Card signal capacitance limits for Ultra DMA operation

The host interface signal capacitance at the host connector shall be a maximum of 25 pF for each signal as measured at 1 MHz.

The card interface signal capacitance at the card connector shall be a maximum of 20 pF for each signal as measured at 1 MHz.

￿Series termination required for Ultra DMA operation

Series termination resistors are required at both the host and the card for operation in any of the Ultra DMA modes. Table describes typical values for series termination at the host and the device.

Table: Typical Series Termination for Ultra DMA

 

 

 

 

 

Signal

Host Termination

 

Device Termination

-HIOE (-HDMARDY,HSTROBE)

22 ohm

 

82 ohm

-IOWR (STOP)

22 ohm

 

82 ohm

-CS0, -CS1

33 ohm

 

82 ohm

A00, A01, A02

33 ohm

 

82 ohm

-DMACK

22 ohm

 

82 ohm

D15 through D00

33 ohm

 

33 ohm

DMARQ

82 ohm

 

22 ohm

INTRQ

82 ohm

 

22 ohm

IORDY (-DDMARDY, DSTROBE)

82 ohm

 

22 ohm

-RESET

33 ohm

 

82 ohm

NOTE Only those signals requiring termination are listed in this table. If a signal is not listed, series terminationis not required for operation in an Ultra DMA mode. Shows signals also requiring a pull-up or pull-down resistor at the host. The actual termination values should be selected to compensate for transceiver and trace impedance to match the characteristic cable impedance.

Transcend Information Inc.

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Transcend Information TS16GCF600 Ultra DMA Electrical Requirements, Series termination required for Ultra DMA operation