59
HCD-DX155/DX255
• IC Pin Function Description
MAIN BOARD IC501 M30622MEP-A61FPU0 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1
DAMP_SCDT/
ODAMP processor and Diat data output
DIAT_SDATA
2
DAMP_SHIFT/
ODAMP processor and Diat clock output
DIAT_SCLK
3 DSP_INTR I DSP interrupt (not used)
4 SIRCS_IN I Sircs input
5 DSP_MOSI/DIR_DIN O DSP and DIR data output (not used)
6 DSP_MISO I DSP data input (not used)
7 DSP_SPICLK/DIR_CLK O DSP/DIR clock output (not used)
8 BYTE I External data bus (Ground terminal)
9 CNVSS I Change processor mode (Pull down)
10 EN_A I Volume control for ENCODER (Pull up)
11 EN_B/FL_RESET I Volume control for ENCODER (Pull up)
12 RESET I System reset signal input
13 XOUT O Crystal output for main clock (5MHz)
14 VSS — Ground terminal
15 XIN I Crystal input for main clock (5MHz)
16 VCC — Power supply (BUP+3.3V)
17 NMI I BUP+3.3V
18 DIR_ZERO I DIR zero data detect (not used)
19
DIR_CSFLAG/
A.CAL_OUT_LEVEL
I Out level detect for auto calibration
20 AC_CUT I Detect AC-CUT
21 FL_CLK/LED_CLK O FL and LED driver clock output
22 LED_LAT O LED driver latch
23 DIAT_CSOD I DIAT CSOD signal input (not used)
24 FL_D_OUT/LED_DATA O FL and LED driver data output
25 FL_CS/STB O FL driver chip select
26 MIC_GAIN O MIC gain control
27 CDM_OPEN_SW I CDM open switch input
28 DC_CONT O A.CAL MIC DC control output
29 I2C_CLK I/O 1
2
C clock input
30 I2C_DATA I/O 1
2
C data input
31 DVD_SID O Media Tek data out/Flash white TXD1
32 DVD_SOD I Media Tek data in/Flash white RXD1
33 DVD_SCO I Media Tek clock in/Flash white CLK1
34 DVD_XIFBUSY O Media Tek busy reguest/Flash white RTS1
35
XM_SC_TX_OUT/
MIC_DET_OUT
O MIC detect status out to Media Tek (not used)
36
XM_SC_RX_IN/
KARAOKE MODE
I KARAOKE mode information from Media Tek (not used)
37 DVD XIFCS I Media Tek chip select
38 MTK RST O Media Tek reset
39 P_CONT1 O Contral for power supply 1
40 P_CONT2 O Contral for power supply 2
41 P_CONT3 O Contral for power supply 3
42 DRIVE_RST (EN) O DAMP driver reset
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