Datasheet

Application Information
13−8
SLLS535E − April 2008TUSB6250
Table 13−4. TUSB6250 Based CompactFlashE Storage Card Reader Pin Assignment and Mapping
CompactFlashE
CONNECTOR PIN
SIGNAL
PIN TYPE
(CF CARD)
TUSB6250
PIN USED
CompactFlashE
CONNECTOR PIN
SIGNAL
PIN TYPE
(CF CARD)
TUSB6250
PIN USED
1 GND 26 CD1 O CD1, See Note 11
2 D03 I/O DD3 27 D11 I/O DD11
3 D04 I/O DD4 28 D12 I/O DD12
4 D05 I/O DD5 29 D13 I/O DD13
5 D06 I/O DD6 30 D14 I/O DD14
6 D07 I/O DD7 31 D15 I/O DD15
7 CS0 I CS0 32 CS1 I CS1
8 A10 I None, See Note 2 33 VS1 O None, See Note 5
9 ATA SEL I None, See Note 1 34 IORD I DIOR
10 A09 I 35 IOWR I DIOW
11 A08 I
None, See Note 2
36 WE I None, See Note 3
12 A07 I
None, See Note 2
37 INTRQ O INTRQ
13 VCC 38 VCC
14 A06 I 39 CSEL I None, See Note 7
15 A05 I
None, See Note 2
40 VS2 O None, See Note 6
16 A04 I
None, See Note 2
41 RESET I RST_ATA
17 A03 I 42 IORDY O IORDY
18 A02 I DA2 43 INPACK O None, See Note 4
19 A01 I DA1 44 REG I None, See Note 3
20 A00 I DA0 45 DASP I/O P3.7, See Note 9
21 D00 I/O DD0 46 PDIAG I/O P3.6, See Note 8
22 D01 I/O DD1 47 D08 I/O DD8
23 D02 I/O DD2 48 D09 I/O DD9
24 IOCS16 O None, See Note10 49 D10 I/O DD10
25 CD2 O CD2, See Note 11 50 GND
NOTES: 1. To enable the true-IDE mode, the ATA SEL pin should be grounded at the CompactFlash storage card reader side of the connector
during the power-off to power-on cycle. In this mode:
• PCMCIA protocol and configuration are disabled and only I/O operations to the Task_File and data register are allowed.
• No memory or attribute registers are accessible to the host.
• CompactFlash memory cards permit 8-bit data accesses only if the user issues a set feature command to put the device in 8-bit
mode.
2. These pins should be grounded at the CompactFlash storage card reader side of the connector.
3. These pins should be tied to V
CC
at the CompactFlash storage card reader side of the connector.
4. In the true-IDE mode, the INPACK
pin is not used and should be left open at the CompactFlash storage card reader side of the
connector.
5. The voltage sense signal, VS1
, is grounded so that the CompactFlash storage card CIS can be read at 3.3 V.
6. The voltage sense signal, VS2
, is left open and reserved by PCMCIA for a secondary voltage. For the TUSB6250-based
CompactFlash storage card reader, only one supply voltage (3.3 V) is supported.
7. CSEL
is used to configure the device as a IDE master or slave. To configure the CompactFlash storage card as the IDE master, the
CSEL
pin should be grounded at the CompactFlash storage card reader side of the connector; otherwise, to configure it as the IDE
slave, the CSEL
pin should be left open at the CompactFlash storage card reader side of the connector. See Section 13.4.2.1, CSEL
(Cable Select), Pin 28 on the ATA/ATAPI Connector, for a detailed explanation.
8. PDIAG
is driven by the device as the pass diagnostic signal in the master/slave handshake protocol. It is also used as the cable
assembly type identifier. The device must have a 10-kΩ pullup resistor on this signal. Although the TUSB6250 hardware does not
support this signal, end-product developers can choose to support the desired function in custom firmware. The TUSB6250 can issue
identify device or identify packet device commands to identify both device-0 and device-1 capabilities and assign proper transfer
mode. See Section 13.4.2.3, PDIAG
:CBLID (Passed Diagnostics: Cable Assembly Type Identifier), Pin 34 on the ATA/ATAPI
Connector, for a detailed explanation.
9. DASP
is driven by the device as the device active or device-1 present signal in the master/slave handshake protocol. The device
should have a 10-kΩ pullup resistor on the DASP
pin. Although the TUSB6250 hardware does not support the DASP signal,
end-product developers can choose to support the desired function with custom firmware. See Section 13.4.2.4, DASP
(Device
Active, Device 1 Present), Pin 39 on the ATA/ATAPI Connector, for a detailed explanation.