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B
Appendix
Pin Assignments
B.1 CRT (VGA) Connector
The pin assignment of the VGA connector is as follows:
No PIN ASSIGEMENT(by: sort) DESCRIPTION
Red this DAC analog output drives the CRT
1 RED Video_5 :O (analog)
interface.
GREEN Video_5 :O Green this DAC analog output drives the CRT
2 (analog) interface.
BLUE Video_5 :O Blue this DAC analog output drives the CRT
3
(analog) interface.
4 Monitor ID Bit 2 : Option
5 GROUND : Ground
6 RED Return (ground) : Ground
7 GREEN Return (ground) : Ground
8 BLUE Return (ground) : Ground
9 KEY (no connector) : VCC
10 SYNC Return (ground) : Ground
11 MONITOR ID Bit 0_5 : Monitor Sense Indicator
12 MONITOR ID Bit 1_5 :I DDC monitor data
CRT Horizontal Sync this output is The
13 HORIZONTAL SYNC_5 :O (t/s)
Horizontal sync pulse for the CRT Monitor.
CRT Vertical Sync this output is the Vertical
14 VERTICAL SYNC_5 :O (t/s)
sync pulse for the CRT Monitor.
15 MONITOR ID Bit 3_5 :I/O DDC monitor clock
Absolute Maximum Conditions
The following parameters are maximum ratings for VGA. Permanent device damage may
occur if these rating are exceeded. Extended exposure to these ratings may also cause device
failure.
PARAMETER MIN MAX UNIT
I/O VOLTAGE -0.5 +6.00V V
-12mA(source)
OUTPUT CURRENT mA
+24mA(sink)
FIC A550 Service Manual B-1
Pin Assignments
B.2 Serial Port Connector
The pin assignment of the serial (COM1) port connector is as follows:
No PIN ASSIGMENT (by: sort) DESCRIPTION
1 DCDA#_T:I Active low Data Carrier Detect inputs for the serial port.
2 SINA_T:I Receiver serial data input for port 1.
3 SOUTA_12:O Transmit serial data output for port 1.
4 DTRA#_6:O Active low Data Terminal Ready outputs for the serial port.
5 GND Ground
6 DSRA#_T:I Active low Data Set Ready inputs for the serial port.
7 RTSA#_6:O Active low Request to Send Outputs for the serial port.
8 CTSA#_T:I Active low Clear to Send inputs for the serial port.
9 RI#_T:I Active low Ring Indicator inputs for the serial port.
B.3 Parallel Port Connector
The pin assignment of the parallel/printer (LPT1) port connector is as follows:
No PIN ASSIGMENT(by: sort) Description
1 STB#/DS0#_D14/_P14/_D12:O An active low pulse on this output is used to strobe
the printer data into the printer.
The STROBE output is the complement of Bit 0 of the
printer control register.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
Active low outputs select driver 0
2 PD0/INDEX3#_P14/_S:IO/I Port data 0
This active low Schmidt trigger input senses from the
disk drive that the head is positioned over the
beginning of a track as marked by an index hole.
3 PD1/TRK0#_P14/_S:IO/I Port data 1
This active low Schmidt trigger input senses from the
disk drive that the head is positioned over the
outermost track.
4 PD2/WRTPRT#_P14/_S:IO/I Port data 2
This active low Schmidt trigger input senses from the
disk drive that a disk is write protected.
Any write command is ignored.
5 PD3/RDATA#_P14/_S:IO/I Port data 3
Raw serial bit stream from the disk drive, low active.
Each falling edge represents a flux transition of the
encoded data.
6 PD4/DSKCHG_P14/_S:IO/I Port data 4
This input senses that the driver door is open or that
the diskette has possibly been changed since the last
drive selection.
7 PD5_P14:IO Port data 5
8 PD6/MTR0#_P14/_D12:IO/O Port data 6
This active low outputs select motor drives 0.
9 PD7_P14:IO Port data 7
10 ACK#/DS1#_T_D12:I/O A low active output from the printer indicating that it
has received the data and is ready to accept new
data.
Bit 6 of the printer status register reads the ACK#
Input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
11 BUSY/MRT1#_T/_D12:_I/O This is a status output from the printer, a high
indicating that the printer is not ready to receive new
data.
B-2 FIC A550 Service Manual
Pin Assignments
Bit 7 of the Printer status register is the complement
Of the BUSY input. Refer to parallel port description
for use of this pin in ECP and EPP mode.
This active low outputs select motor Drives 1.
12 PE/WDATA#_T/_D12:I/O Another status output from the printer, a high
indicating that printer is out of paper.
Bit 5 of the printer status register reads the PE input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
This active low high current driver provide the
encoded data to the disk drive.
Each falling edge cause a flux transfer on the media.
13 SLCT/WGATE#_T/_D12:I/O This high active output from the printer indicates that it
has power on.
Bit 4 of the printer status register read the SLCT input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
This active low high current driver allows current to
flow through the write head.
It become active just prior to writing to the diskette.
14 AFD#/DSB#_D14,_P14/_D12:O,O/O This output goes low to cause the printer to
automatically feed one line after each line is printed.
The AFD# output is the complement of bit 1 of the
printer control register.
Refer to parallel pot description for use of this pin in
ECP and EPP mode.
15 ERR#/HDSEL_T/D12:I/O A low on this input from the printer indicates that there
is a error condition at the printer.
Bit 3 of the printer status register reads the ERR#
input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
This high current output selects the floppy disk side
for reading or writing.
A logic "1" on this pin means side 0 will be accessed
while a logic "0" means side 1 will be acessed.
16 INIT#/DIR#_D14,_P14/D12:O,O/O This output is bit 2 of the printer control register. This
is used to initiate the printer when low.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
This high current low active output determines the
direction of the head movement.
A logic "1" on this pin means outward motion, while a
logic "0" means inward motion.
17 SLIN#/STEP#_D14,_P14/_D12:O,O/O This active low output selects the printer.
This is the complement of bit 3 of the printer control
register.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
This active low high current driver issues s low pulse
for each track to track movement of the head.
18 GND: Ground
19 GND: Ground
20 GND: Ground
21 GND: Ground
22 GND: Ground
23 GND: Ground
24 GND: Ground
25 GND: Ground
FIC A550 Service Manual B-3
Pin Assignments
B.4 PS/2 Mouse / Ext. Keyboard MiniDIN Connector
-
Following is the pin assignment of the PS/2 connector:
No Signal Description Type
1 MOUSE_CLK External clock for mouse or keyboard I/O
2 EKB_CLK External clock for mouse or keyboard I/O
3 +5vs 5v power supply O
4 Gnd Ground I
5 EKB_DATA External data for mouse or keyboard I/O
6 MOUSE_DATA External data for mouse or keyboard I/O
B.5 USB Connector
The pin assignment of the USB port connector is as follows:
No Signal Description Type
1, 5, 9, 10, 11, 12 GND Ground O
2 USBP0+ USB port0 bus signal O
3 USBP0- USB port0 bus signal O
4 +5VS USB port0 power
6 USBP1+ USB port1 bus signal
7 USBP1- USB port1 bus signal
8 +5VS USB port1 power
B.6 CD-ROM IDE Connector
The following is the pin assignment for the CD-ROM IDE connector:
NO. Signal Description Type
5 CDROMRESET# Reset secondary disk O
33 RSDA0 Secondary disk address 0 O
31 RSDA1 Secondary disk address 1 O
34 RSDA2 Secondary disk address 2 O
21 RSDD0 Secondary disk data 0 I/O
19 RSDD1 Secondary disk data 1 I/O
17 RSDD2 Secondary disk data 2 I/O
15 RSDD3 Secondary disk data 3 I/O
13 RSDD4 Secondary disk data 4 I/O
11 RSDD5 Secondary disk data 5 I/O
9 RSDD6 Secondary disk data 6 I/O
7 RSDD7 Secondary disk data 7 I/O
6 RSDD8 Secondary disk data 8 I/O
8 RSDD9 Secondary disk data 9 I/O
10 RSDD10 Secondary disk data 10 I/O
12 RSDD11 Secondary disk data 11 I/O
14 RSDD12 Secondary disk data 12 I/O
16 RSDD13 Secondary disk data 13 I/O
18 RSDD14 Secondary disk data 14 I/O
20 RSDD15 Secondary disk data 15 I/O
35 RSDCS1# Secondary disk chip select for 100 range O
36 RSDCS3# Secondary disk chip select for 300 range O
28 RSDDACK# Secondary DMA acknowledge O
22 RSDDREQ Secondary DMA request I
B-4 FIC A550 Service Manual
Pin Assignments
24 RSDIOR# Secondary disk IO read O
25 RSDIOW# Secondary disk IO write O
27 RSIORDY Secondary disk IO channel ready I
29 IRQ15 Secondary disk interrupt I
50 NC NC
49 NC NC
37 CDROMLED# CDROM access indicator O
2 CD_R CDROM sound right signal O
4 GND Ground I
1 CD_L CDROM sound left signal O
3 CD_RGND Left Ground I
39,41,38,40,42 +5Vs +5V power supply I
23,43,44,45,46,48 Gnd Ground O
47 CSEL SELECT MASTER OR SLAVE I
B.7 DC-IN Jack Pin Assignment
The pin assignment of the DC-IN connector is as follows:
No Signal Description Type
1 ADAPV+ Adapter input voltage I
2 Gnd Ground O
B.8 LCD Connector Pin Assignment
The pin assignment of the LCD connector is as follows:
NO. Signal Description Type
Flat panel backlight signal
22 INVENA O
control the LCD backlight.
2 LCDID0 LCD type bit0 I
4 LCDID1 LCD type bit1 I
6 LCDID2 LCD type bit2 I
8 LCDID3 LCD type bit3
20 BRIGHTNESS LCD brightness adjust voltage O
23 TXOUTU0- O
21 TXOUTU0+ O
17 TXOUTU1- O
15 TXOUTU1+ O
11 TXOUTU2- O
9 TXOUTU2+ O
5 TXCLK- O
3 TXCLK+ O
16 MAIL LED
10 LED GREEN
12 LED AMBER
14 LED CHG
46,48,50 +3V
24,26,28,30,32 +5V
1,7,13,19,25,31,37,43,49,34,36,38, GND
40,42,44
18 NC
FIC A550 Service Manual B-5
Pin Assignments
B.9 FDD Connector
The pin assignment for the FDD connector is as follows:
NO. Signal Description Type
Read disk data. Raw serial bit stream form the disk drive, low active.
24 RDATA# I
Each falling edge represents a flux transition of the encoded data.
Write gate. This active low high current driver allows current to flow
18 WGATE# through the write head . O
It becomes active just prior to writing to the diskette.
Write data. This active low high current driver provides the encoded
16 WDATA# data to the disk drive. O
Each falling edge causes a flux transition on the media.
Head select. The high current select the floppy disk side for reading or
26 HDSEL# writing. A logic "1" on the pin means side 0 will be accessed, while a O
logic "0" means side 1 will be accessed.
Direction control. This high current low active output determines the
12 DIR# direction of the head movement. A logic "1" on this pin means outward O
motion , while a logic "0" means inward motion.
Step pulse. The active low high current driver issues a low pules for
14 STEP# O
each track-to-track movement of the head.
Disk change. This input senses that the drive door is open or that the
diskette has possibly been changed since the last drive selection.
6 DSKCHG# This input is inverted and read via bit 7 of I/O address 3F7H. The I
DSKCHG# bit also depends upon the state of the Force Disk Change
bits in the Force FDD Status Change configuration register.
4 DS0# Drive select 0. Active low outputs select drives 0. O
10 MOTR0 Motor on. These active low output motor on. O
13 3MODE 3 Mode FDD select. O
Write protected. This active low Schmitt trigger input senses from the
22 WRTPRT# I
disk drive that a disk is write protected.
Track 00. This active low Schmitt trigger input senses from the disk
20 TRK0# I
drive that the head is positioned over the outermost track.
This active low Schmitt Trigger input senses from the disk drive that
2 INDEX# head is positioned over the beginning of a track , as marked by an I
index hole.
7,8,9 NC
25,23,21, Ground
Gnd I
19,17,15
11,5,3,1 +5Vs +5V power supply O
B.10 HDD Pin Assignment
The pin assignment of the internal HDD is as follows:
NO. Signal Description Type
1 HDDRESET# Reset primary disk O
35 RPDA0 Primary disk address 0 O
33 RPDA1 Primary disk address 1 O
36 RPDA2 Primary disk address 2 O
17 RPDD0 Primary disk data 0 I/O
15 RPDD1 Primary disk data 1 I/O
13 RPDD2 Primary disk data 2 I/O
11 RPDD3 Primary disk data 3 I/O
9 RPDD4 Primary disk data 4 I/O
7 RPDD5 Primary disk data 5 I/O
5 RPDD6 Primary disk data 6 I/O
3 RPDD7 Primary disk data 7 I/O
B-6 FIC A550 Service Manual
Pin Assignments
4 RPDD8 Primary disk data 8 I/O
6 RPDD9 Primary disk data 9 I/O
8 RPDD10 Primary disk data 10 I/O
10 RPDD11 Primary disk data 11 I/O
12 RPDD12 Primary disk data 12 I/O
14 RPDD13 Primary disk data 13 I/O
16 RPDD14 Primary disk data 14 I/O
18 RPDD15 Primary disk data 15 I/O
37 RPDCS1# Primary disk chip select for 100 range O
38 RPDCS3# Primary disk chip select for 300 range O
29 RPDDACK# Primary DMA acknowledge O
21 RPDDREQ Primary DMA request I
25 RPDIOR# Primary disk IO read O
23 RPDIOW# Primary disk IO write O
27 RPIORDY Primary disk IO channel ready I
31 IRQ14 Primary disk interrupt I
39 HDDLED# HDD access indicator O
2,19,22,24,26 Ground
Gnd I
,28,3040,43
41,42 +5Vs +5v power supply O
B.11 Internal Keyboard FPC Connector
The pin assignment of the internal keyboard connector is as follows:
No Signal Description Type
1,25 X15 Keyboard matrix column 15 I
2,26 X14 Keyboard matrix column 14 I
3,27 X13 Keyboard matrix column 13 I
4,28 X12 Keyboard matrix column 12 I
5,29 X11 Keyboard matrix column 11 I
6,30 X10 Keyboard matrix column 10 I
7,31 X9 Keyboard matrix column 9 I
8,32 X8 Keyboard matrix column 8 I
9,33 X7 Keyboard matrix column 7 I
10,34 X6 Keyboard matrix column 6 I
11,35 X5 Keyboard matrix column 5 I
12,36 XY7 Keyboard matrix row 7 O
13,37 XY6 Keyboard matrix row 6 O
14,38 XY5 Keyboard matrix row 5 O
15,39 XY4 Keyboard matrix row 4 O
16,40 X4 Keyboard matrix column 4 I
17,41 X3 Keyboard matrix column 3 I
18,42 XY3 Keyboard matrix row 3 O
19,43 XY2 Keyboard matrix row 2 O
20,44 XY1 Keyboard matrix row 1 O
21,45 XY0 Keyboard matrix row 0 O
22,46 X2 Keyboard matrix column 2 I
23,47 X1 Keyboard matrix column 1 I
24,48 X0 Keyboard matrix column 0 I
B.12 Battery Connector
The pin assignment for the battery connector is as follows:
No Signal Description Type
1 Gnd Ground -
2 B_PMU5V I
3 BAT+ Battery output/input voltage I/O
FIC A550 Service Manual B-7
Pin Assignments
4 CLK SMBus clock signal I/O
5 DTA SMBus data signal I/O
6 TH1 THERMAL O
7 BIN1 O
8 GND GROUND -
B.13 Audio Jack
The audio jack comprises of the headphone jack, line-out jack, and microphone jack:
SPDIF & Headphone Jack
The pin assignment of the headphone jack is as follows:
No Signal Description Type
4 GND Ground I
2 HP_L Headphone left sound O
3 HP_R Headphone right sound O
5 SPDIFDET SPDIF insert detect I
1 HPDET Headphone insert detect I
8 SPDIF PWR SPDIF power O
7 SPDIF SPDIF signal O
9 GND Ground I
Line-In Jack
The pin assignment of the line-in jack is as follows:
No Signal Description Type
1 GND Ground I
2 LINEINL Line in left sound I
3 LINEINR Line in right sound I
4 GND Ground I
5 GND Ground I
Microphone Jack
The pin assignment of the microphone jack is as follows:
No Signal Description Type
1 GND Ground I
2 MICIN External Microphone input signal I
3 GND Ground I
4 EXTMICDET EXTERNAL MIC detect I
5 GND Ground I
B.14 Internal Microphone Connector
The pin assignment of the internal microphone is as follows:
No Signal Description Type
1 MICIN External Microphone input signal
2 GND Ground
B-8 FIC A550 Service Manual
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