Keith & Koep GmbH
Functional specification
MT6N (MT606)
6
von
49
3.3
CompactFlash / PCMCIA
The MT6N is delivered with a Type I CompactFlash connector. In addition
(optional) there is a 68-leaded adaption connector which carries all signals for a sin-
gle Type II PCMCIA-Slot connector.
3.3.1
PCMCIA
In the past memory expansion cards (specification 1.0) of the size of check cards
had just the purpose of providing memory. With the today generally valid specifica-
tion 2.0 much of I/O units can be placed in a PCMCIA-slot. This includes for exam-
ple SCSI-adaptation, Ethernet-Card or modem cards.
The PCMCIA-adaption connector on the board is designed on the basis of specifi-
cation 2.0 (representative of this specification is the
Personal Computer Memory
Card International Association
)
The adjustment of the supply voltage and the programming voltage of the PCM-
CIA-card is to be effected by the Board Control Register.
3.3.2
CompactFlash
CompactFlash is a very small removable mass storage device. It provides complete
PCMCIA-ATA functionality and compatibility plus TrueIDE functionality compati-
ble with ATA/ATAPI-4. At 43mm (1.7“) x 36mm (1.4“) x 3.3mm (0.13“), the
device’s thickness is less than one-half of a current PCMCIA Type II card. It is actu-
ally one-fourth the volume of a PCMCIA card. Compared to a 68-pin PCMCIA
card, a CompactFlash card has 50 pins (the connector is similar to the PCMCIA
card) but still conforms to PCMCIA-ATA specs. CompactFlash cards are designed
with flash technology, a non-volatile storage solution that does not require a battery
to retain data indefinitely. CompactFlash storage products are solid state, meaning
TABLE 1.
PCMCIA and CF Status Register
Offset 0x00000000
PCMCIA Status Register
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
VS[1
.0
]
BVD[1:0]
Bits
Name
Type
Description
1:0
BVD[2..1]
Read Only
Charge Condition of PC-card
00 - Battery low, data loss
01 - Warning, battery must be chan-
ged, but no data loss till now
10 - Battery low, data loss
11 - Battery OK
3:2
VS[2:1]
Read Only
Voltage Sense lines
xx
a
- 5V operation
0x - 3V3 operation
a. x means unconnected
