Sharp HT-CN300 Service Manual page 41

IC710 RH-iX0489AWZZ: System Microcomputer (IX0489AW) (1/2)
Pin No. Port Name
1 P96/ANEX1/SOUT4
2 P95/ANEX0/CLK4
3 P94/DA1/TB4IN
4 P93/DA0/TB3IN
5* P92/TB2IN/SOUT3
6 P91/TB1IN/SIN3
7* P90/TB0IN/CLK
8 BYTE
9 CNVSS
10 P87/XCIN
11* P86/XCOUT
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 P85/MNI
18 P84/INT2
19 P83/INT1
20 P82/INT0
21* P81/TA4IN/U
22 P80/TA40UT/U
23 P77/AT3IN
24 P76/TA3OUT
25 P75/TA2IN/W
26 P74/TA2OUT/W
27 P73/CTS2/RT2S/TA1IN/V
28 P72/CLK2/TA1OUT/V
29 P71/RXD2/SCL/TA0IN/TB5IN SCL
30 P70/TXD2/SDA/TA0OUT SDA
31 P67/TXD1
32 P66/RXD1
33 P65/CLK1
34 P64/CTS1/RTS1/CTS0/CLKS1
35 P63/TXD0
36 P62/RXD0
37 P61/CLK0
38 P60/CTS0/RTS0
39 P57/RDY/CLKOUT
40* P56/ALE
41 P55/HOLD
42 P54/HLDA
43* P53/BCLK
44* P52/RD
45 P51/WRH/BHE
46 P50/WRL/WR
47 P47/CS3
48 P46/CS2
49 P45/CS1
50 P44/CS0
51* P43/A19
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Terminal Name Input/Output
FLD_SDAT Output
FLD_SCK Output
FLD_CS Output
FLD_RESET Output
DVD_KDATA Output
DVD_DATA Input
DVD_CLK Output
BYTE Input
FLASH_VCC Input
DVD_STB Input
DVD_ERITE Output
RESET Input
X_OUT Output
GND —
X_IN Input
VCC Input
FLASH_"H" Input
SYS_STOP Input
GND —
RX_IN Input
TIMER_LED Output
DD_LED Output
STD_LED Output
DTS_LED Output
VIR_LED Output
AAC_LED Output
DPL_LED Output
F-CONT2 Input
Output
Input/Output
FLASH_TXD Output
FLASH_RXD Output
FLASH_SLOCK Output
FLASH_BUSY Output
DSP_SCDIN Output
DSP_SCDOUT Input
DSP_SCCLK Output
DSP_CS Input
DSP_RESET Output
L-MUTE Output
FLASH_EPM Input
AUDITION Input
F_CONT Output
FM_STB Output
DSP_UC15 Output
FLASH_CE Input
DSP_UC16 Output
DSP_UC17 Output
ASPECT Input
V-MODE Input
V_SEL1 Output
Display data output to M66005FP-FL driver.
Serial clock output to M66005FP-FL driver.
CS control output to M66005FP-FL driver.
Reset output to M66005FP-FL driver.
Control data output to the DVD unit.
DVD/CD/VCD data input from the DVD unit.
Serial clock output to the DVD unit.
Connected to VSS due to unused external bus.
Used in the single chip mode. Connected to VSS via pull-down resistance.
Strobe input from the DVD unit.
"L" - DVD microcomputer ROM write mode.
Microcomputer reset input. Active "L".
Microcomputer reference oscillation output.
Connected to GND (VSS).
Microcomputer reference oscillation input
Microcomputer power supply (3.3 V)
Connected to VCC via pull-up resistance.
Power failure detection input. Microcomputer enters the backup mode.
Port processing. "L" fixed.
Sharp method, remote control input..
Timer stand-by LED control.
Dolby digital IND.
Surround mode stanrd IND.
DTS IND.
Surround mode virtual IND.
AAC IND.
Dolby pro logic IND.
Switches power supply frequency and changes oscillation frequency.
AK4586/CXA2125Q. 12C BUS clock output.
AK4586/CXA2125Q. 12C BUS data input/output.
Functionally not used. Normally, output "L" fixed.
Functionally not used. Normally, output "L" fixed.
Functionally not used. Normally, output "L" fixed.
Functionally not used. Normally, output "L" fixed.
DSP IC serial data output.
DSP IC serial data output.
Sends DSP IC serial send/receive sync clock.
Sends DSP IC serial send/receive strobe.
DSP IC RESET output.
VCR OUT audio mute output.
Connected to VSS via pull-down resistance.
Audition model select input.
Switches power supply frequency and changes oscillation frequency.
When function is set to "FM Stereo" or "FM MONO": "L". Otherwise: "H".
External ROM for DSP download program.
Connected to VCC via pull-up resistance.
External ROM for DSP download program.
External ROM for DSP download program.
DVD unit aspect ratio data input.
Video mode select SW input terminal.
Connected to video output selector, SW1.
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HT-CN300
Function