F71872
1
0
DSD_N
DSC_N
R
R
1
1
This bit indicates the complement of DRVD# disk interface output. Not support
in this design.
This bit indicates the complement of DRVC# disk interface output. Not support
in this design.
7.2.3.6 Tape Drive Register Base + 3
Bit
Name
R/W Default
Description
7-6 Reserved
5-4 TYPEID
R
R
00
11
Reserved. Return 00b when read.
Reserved in normal function, return 11b when read.
If 3 mode FDD function is enabled. These bits indicate the drive type ID.
3-2 Reserved
1-0 TAPESEL
R
11
0
Reserved. Return 11b when read in normal function.
Return 00b when read in 3 mode FDD function.
R/W
These bits assign a logical drive number to be a tape drive.
7.2.3.7 Main Status Register Base + 4
Bit
Name
R/W Default
Description
7
RQM
DIO
R
R
0
0
Request for Master indicates that the controller is ready to send or receive data
from the uP through the FIFO.
6
Data I/O (direction):
0: the controller is expecting a byte to be written to the Data Register.
1: the controller is expecting a byte to be read from the Data Register.
5
NON_DMA
R
0
Non DMA Mode:
0: the controller is in DAM mode.
1: the controller is interrupt or software polling mode.
4
3
FDC_BUSY
R
R
0
0
This bit indicate that a read or write command is in process.
DRV3_BUSY
FDD number 3 is in seek or calibration condition. FDD number 3 is not support
in this design.
2
1
0
DRV2_BUSY
DRV1_BUSY
DRV0_BUSY
R
R
R
0
0
0
FDD number 2 is in seek or calibration condition. FDD number 2 is not support
in this design.
FDD number 1 is in seek or calibration condition. FDD number 1 is not support
in this design.
FDD number 0 is in seek or calibration condition.
7.2.3.8 Data Rate Select Register Base + 4
Bit
Name
R/W Default
Description
7
6
SOFTRST
W
W
0
0
A 1 written to this bit will software reset the controller. Auto clear after reset.
PWRDOWN
Reserved
A 1 to this bit will put the controller into low power mode which will turn off the
oscillator and data separator circuits.
5
-
-
Return 0 when read.
39
July, 2007
V0.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
