MiTAC MiNote 7321, Руководство по обслуживанию

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7321 N/B Maintenance 7321 N/B Maintenance
5.3 VIA VT8231 BGA PCI-LPC/ISA South Bridge
AC97 Audio / Modem Interface
Signal Name PIN # I/O Signal Description
ACRST G2 O AC97 Reset
ACSYNC G1 O AC97 Sync
ACSDOUT
H3 O
AC97 Serial Data Out
ACSDIN0 H1 I AC97 Serial Data In 0
ACSDIN1 H2 I AC97 Serial Data In 1
ACBITCLK J3 I AC97 Bit Clock
Gam e Port Interface
Signal Nam e PIN # I/O Signal Description
JAX J1 I Joystick A X-axis
JAY
K4 I
Joystick A Y-axis
JBX K5 I Joystick B X-axis
JBY J2 I Joystick B Y-axis
JAB1
/ GPI28 G3 I
Joystick A Button 1.
Device 0 Function 0 Rx53[7] = 0.
JAB2 / GPO12 H5 I Joystick A Button 2. Device 0 Function 4 RxE5[4] = 0.
JBB1 / GPI29 F1 I Joystick B Button 1. Device 0 Function 0 Rx53[7] = 0.
JBB2
/ GPO13 H4 I
Joystick B Button 2.
Device 0 Function 4 RxE5[4] = 0.
See Function 0 Rx77[6]
Floppy Disk Interface
Signal Nam e PIN # I/O Signal Description
DRVDEN0
L17 O
Drive Density Select 0.
DRVDEN1 K17 O Drive Density Select 1.
M TR0# K18 O M otor Control 0. Select motor on drive 0.
M TR1# J16 O M otor Control 1. Select motor on drive 1
DS0# J17 O Drive Select 0. Select drive 0.
DS1# K19 O Drive Select 1. Select drive 1
DIR# K20 O Direction. Direction of head movement (0 = inward motion,
1 = outward motion)
STEP# J18 O Step. Low pulse for each track-to-track movement of the
head.
INDEX# L20 I Index. Sense to detect that the head is positioned over the
beginning of a track
HDSEL# H19 O Head Select. Selects the side for R/W operations (0 = side
1, 1 = side 0)
TRK00# H16 I Track 0. Sense to detect that the head is positioned over
track 0.
RDATA# H20 I Read Data. Raw serial bit stream from the drive for read
operatrions.
W DATA# J19 O W rite Data. Encoded data to the drive for write operations.
W GATE# J20 O W rite Gate. Signal to the drive to enable current flow in the
write head.
DSKCHG# H18 I Disk Change. Sense that the drive door is open or the
diskette has been changed since the last drive selection.
W RTPRT# H17 I W rite Protect. Sense for detection that the diskette is write
protected (causes write commands to be ignored)
See also Parallel Port pin descriptions for optional Floppy Disk interface functionality
Parallel Port Interface
Signal Name PIN # I/O Signal Description
PINIT# / DIR# B12 IO / O Initialize. Initialize printer. Output in standard mode, I/O in
ECP/EPP mode.
STROBE# / nc A11 IO / - Strobe. Output used to strobe data into the printer. I/O in
ECP/EPP mode.
AUTOFD# /
DRVEN0
E11 IO / O Auto Feed. Output used to cause the printer to automatically
feed one line after each line is printed. I/O pin in ECP/EPP
mode.
SLCTIN# / STEP# D12 IO / O Select In. Output used to select the printer. I/O pin in
ECP/EPP mode.
SLCT / WGATE# E13 I / O Select. Status output from the printer. High indicates that it
is powered on.
ACK# / DS1# B14 I / O Acknowledge. Status output from the printer. Low indicates
that it has received the data and is ready to accept new data
ERROR# / HDSEL# F11 I / O Error. Status output from the printer. Low indicates an error
condition in the printer.
BUSY / MTR1# A14 I / O Busy. Status output from the printer. High indicates not
ready to accept data.
PE / WDATA# D13 I / O Paper End. Status output from the printer. High indicates
that it is out of paper.
PD7 / nc,
PD6 / nc,
PD5 / nc,
PD4 / DSKCHG#,
PD3 / RDATA#,
PD2 / WRTPRT#,
PD1 / TRK00#,
PD0 / INDEX#
C14
A13
B13
C13
E12
A12
C12
D11 IO / -
IO / -
IO / -
IO / I
IO / I
IO / I
IO / I
IO / I Parallel Port Data.
As shown by the alternate functions above, in mobile applications the parallel port pins can optionally
be selected to function as a floppy disk interface for attachment of an external floppy drive using the
parallel port connector (see Super I/O Configuration Index F6[5]).
5. Pin Descriptions of Major Components