F71872
5.3 FDC
Pin No.
Pin Name
Type
PWR
Description
51
OD24
VCC
Drive Density Select.
Set to 1 - High data rate.(500Kbps, 1Mbps)
Set to 0 – Low data rate. (250Kbps, 300Kbps)
DENSEL#
52
54
56
OD24
OD24
OD24
VCC
VCC
VCC
Motor A On. When set to 0, this pin enables disk drive 0.
MOA#
This is an open drain output.
DRVA#
Drive Select A. When set to 0, this pin enables disk drive A.
This is an open drain output.
Write data. This logic low open drain writes
pre-compensation serial data to the selected FDD. An open
drain output.
WDATA#
57
DIR#
OD24
VCC
Direction of the head step motor. An open drain output.
Logic 1 = outward motion
Logic 0 = inward motion
58
59
STEP#
OD24
OD24
VCC
VCC
Step output pulses. This active low open drain output
produces a pulse to move the head to another track.
Head select. This open drain output determines which disk
drive head is active.
HDSEL#
Logic 1 = side 0
Logic 0 = side 1
60
61
62
WGATE#
RDATA#
TRK0#
OD24
INts5V
INts5V
VCC
VCC
VCC
Write enable. An open drain output.
The read data input signal from the FDD.
Track 0. This Schmitt-triggered input from the disk drive is
active low when the head is positioned over the outermost
track.
63
INDEX#
INts5V
VCC
This Schmitt-triggered input from the disk drive is active low
when the head is positioned over the beginning of a track
marked by an index hole.
64
65
WPT#
INts5V
INts5V
VCC
VCC
Write protected. This active low Schmitt input from the disk
drive indicates that the diskette is write-protected.
Diskette change. This signal is active low at power on and
whenever the diskette is removed.
DSKCHG#
5.4 UART Port and SIR
Pin No.
Pin Name
Type
PWR
Description
66
IRTX/GPIO16
O12
VCC
Infrared Transmitter Output.
I/O12t
INts
General Purpose IO
Infrared Receiver input.
70
IRRX/GPIO30
VSB
I/OOD12t
General Purpose IO. Open drain and drive select by register.
118
119
120
DCD1#
RI1#
INt5V
VCC
VCC
VCC
Data Carrier Detect. An active low signal indicates the
modem or data set has detected a data carrier.
INt5V
INt5V
Ring Indicator. An active low signal indicates that a ring
signal is being received from the modem or data set.
Clear To Send is the modem control input.
CTS1#
8
July, 2007
V0.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
