DP-U50
DP-U50
20
IC436 : HD6417014F28
16 bit
µ
-COM (CPU)
No.
Port
Name
I/O
Function
1
PE14/DACK0//AH
SP_ON
O
Speaker relay control (H: ON, L: OFF ) (Not used)
2
PE15/DACK1
T_MUTE
O
Tripath Amp Mute (Not used)
3
VSS
VSS
GND
4
A0
A0
O
Address bus
5
A1
A1
O
Address bus
6
A2
A2
O
Address bus
7
A3
A3
O
Address bus
8
A4
A4
O
Address bus
9
A5
A5
O
Address bus
10
A6
A6
O
Address bus
11
A7
A7
O
Address bus
12
A8
A8
O
Address bus
13
A9
A9
O
Address bus
14
A10
A10
O
Address bus
15
A11
A11
O
Address bus
16
A12
A12
O
Address bus
17
A13
A13
O
Address bus
18
A14
A14
O
Address bus
19
A15
A15
O
Address bus
20
A16
A16
O
Address bus
21
VCC
VCC
+5V
22
A17
A17
O
Address bus
23
VSS
VSS
GND
24
PB2//IRQ0//RAS
DC_ON
I
Power down detection (using power level detection)
25
PB3//IRQ1//CASL
USBSOF
I
Start of Frame input from USB
26
PB4//IRQ2//CASH
USBINT
I
Interruption input from USB
27
VSS
VSS
GND
28
PB5//IRQ3/RDWR
/EAINT
I
Interruption input from Gate Array
29
PB6/A18
A18
O
Address bus
30
PB7/A19
/D_RST
O
Reset signal for YSS928, CS5360(A/D), AD1854(D/A)
31
PB8//IRQ6/A20//WAIT
/DIRINT
I
Interruption input from YSS928 (DIR)
32
PB9//IRQ7/A21
/AC3MUTE
I
Interruption input from YSS928 (MUTE)
33
VSS
VSS
GND
34
/RD
RDB
O
Control signal output for reading
35
/WDTOVF
/WDTOVF
Watched timer overflow output (Not used)
36
/WRH
/WRH
O
Control signal output for upper byte writing
37
VCC
VCC
+5V
38
/WRL
WRL
O
Control signal output for lower byte writing
39
VSS
VSS
GND
40
/CS1
EACS
O
Chip select output for Gate Array
41
/CS0
FLASHCS
O
Chip select output for external ROM
42
PA9/TCLKD//IRQ3
/ICD
O
Chip select output for FL driver
43
PA8/TCLKC//IRQ2
/NONPCM
I
Interruption input from YSS928 (NONPCM)
44
PA7/TCLKB//CS3
SRAMCS
O
Chip select output for SRAM
45
PA6/TCLKA//CS2
USBCS
O
Chip select output for USB
46
PA5/SCK1//DREQ1//IRQ1 T-FAULT
I
Protection for Tripath Amp (Not used)
47
PA4/TXD1
TX
O
Serial data output for Debug Monitor (RS232C)
48
PA3/RXD1
RX
I
Serial data input for Debug Monitor (RS232C)
49
PA2/SCK0//DREQ0//IRQ0 FLCK
O
Serial clock output to FL driver
50
PA1/TXD0
FLDA
O
Serial data output to FL driver
51
PA0/RXD0
FLCS
O
Chip select output to FL driver
52
D15
D15
I/O
Data bus
53
D14
D14
I/O
Data bus
54
D13
D13
I/O
Data bus
55
VSS
VSS
GND
56
D12
D12
I/O
Data bus
