TS2GCF300 Transcend Information. Inc., TS2GCF300 Datasheet - Page 45

• Manufacturer Part Number: TS2GCF300
• Description: 300x Compactflash Card
• Manufacturer: Transcend Information. Inc.

T
Host Configuration Requirements for Master/Slave or New Timing Modes
Metaformat Overview
Transcend Information Inc.
T
T
S
S
S
The goal of the Metaformat is to describe the requirements and capabilities of the CompactFlash Storage Card as
thoroughly as possible. This includes describing the power requirements, IO requirements, memory requirements,
manufacturer information and details about the services provided.
4
4
4
G
G
G
The CF Advanced Timing modes include PCMCIA PC Card style I/O modes that are faster than the original 250
ns cycle time. These modes are not supported by the PCMCIA PC Card specification nor CF by cards based on
revisions of the CF specification before Revision 3.0. Hosts shall ensure that all cards accessed through a
common electrical interface are capable of operation at the desired, faster than 250 ns, I/O mode before
configuring the interface for that I/O mode.
Advanced Timing modes are PCMCIA PC Card style I/O modes that are 100 ns or faster, PC Card Memory
modes that are 100ns or faster, True IDE PIO Modes 5,6 and Multiword DMA Modes 3,4. These modes are
permitted to be used only when a single card is present and the host and card are connected directly, without a
cable exceeding 0.15m in length. Consequently, the host shall not configure a card into an Advanced Timing
Mode if two cards are sharing I/O lines, as in Master/Slave operation, nor if it is constructed such that a cable
exceeding 0.15 meters is required to connect the host to the card.
The load presented to the Host by cards supporting Ultra DMA is more controlled than that presented by other
CompactFlash cards. Therefore, the use of a card that does not support Ultra DMA in a Master/Slave
arrangement with a Ultra DMA card can affect the critical timing of the Ultra DMA transfers. The host shall not
configure a card into Ultra DMA mode when a card not supporting Ultra DMA is also present on the same
interface
When the use of two cards on an interface is otherwise permitted, the host may use any mode that is supported
by both cards, but to achieve maximum performance it should use its highest performance mode that is also
supported by both cards.
Note: The value “1” defined for D3 of the N+0 words indicates that no write-protect switch controls writing the ATA
~
~
~
1
1
1
6
6
6
registers. The value “0” defined for D7 in the N+2 words indicates that there is not more than a single speed
extension byte.
G
G
G
C
C
C
F
F
Table: Sample Device Info Tuple Information for Extended Speeds
F
3
3
3
0
0
0
0
0
0
45
300X CompactFlash Card