Pioneer PDP-R04E, Service Manual

Page: 229 / 233

PDP-R04E
178
1 2 3 4
1 2 3 4
C
D
F
A
B
E
Pin Function
No. Pin Name
Second
Function
I/O
Pin Function
1 TCK
−
I Clock for JTAG interface
2 TMS
−
I Control signal for JTAG interface
3 TDI
−
I Data input for JTAG interface
4 TDO
−
O Data output for JTAG interface
5 P2.8 EX0IN I/O General purpose I/O port/External interrupt 0
6 P2.9 EX1IN I/O General purpose I/O port/External interrupt 1
7 P2.10 EX2IN I/O General purpose I/O port/External interrupt 2
8 P2.11 EX3IN I/O General purpose I/O port/External interrupt 3
9 P2.12 EX4IN I/O General purpose I/O port/External interrupt 4
10 P2.13 EX5IN I/O General purpose I/O port/External interrupt 5
11 P2.14 EX6IN I/O General purpose I/O port/External interrupt 6
12 P2.15 EX7IN I/O General purpose I/O port/External interrupt 7
13 VSS33-1
− −
Digital ground for pads
14 VDD33-1
− −
Digital power (for pads) (3.3 V)
15 P4.5 CS3 O General purpose output port/Chip select signal for second external static memory
16 P4.4 A20 O General purpose output port/Address bit
17 P4.3 A19 O General purpose output port/Address bit
18 P4.2 A18 O General purpose output port/Address bit
19 P4.1 A17 O General purpose output port/Address bit
20 VSS25-1
− −
Digital ground (for digital core)
21 VDD25-1
− −
Digital power (for digital core) (2.5 V)
22 P4.0 A16 O General purpose output port/Address bit
23 A8 R8 O Address bit/SDRAM address bit
24 A7 R7/C7 O Address bit/SDRAM address bit
25 A9 R9 O Address bit/SDRAM address bit
26 A6 R6/C6 O Address bit/SDRAM address bit
27 A5 R5/C5 O Address bit/SDRAM address bit
28 A10 R10 O Address bit/SDRAM address bit
29 A11 R11 O Address bit/SDRAM address bit
30 A12 R12 O Address bit/SDRAM address bit
31 VSS33-2
− −
Digital ground for pads
32 VDD33-2
− −
Digital power (for pads) (3.3 V)
33 A4 R4/C4 O Address bit/SDRAM address bit
34 A3 R3/C3 O Address bit/SDRAM address bit
35 A2 R2/C2 O Address bit/SDRAM address bit
36 A1 R1/C1 O Address bit/SDRAM address bit
37 A0 R0/C0 O Address bit (All addresses are word addresses)/SDRAM Address bit
38 A13 R13 O Address bit/SDRAM address bit
39 A14 RAS O Address bit/Row address strobe for SDRAM access
40 A15 CAS O Address bit/Column address strobe for SDRAM access
41 VSS33-3
− −
Digital ground for pads
42 VDD33-3
− −
Digital power (for pads) (3.3 V)
43 MEMCLK
−
O Clock for SDRAM
44 CSSDRAM
−
O Chip select signal for SDRAM device
45 CLKEN
−
O Enable for memory clock
46 CSROM
−
O Chip select signal for ROM device
47 RD
−
O
External memory read strobe for ROM. RD is activated for every external instruction or data read access.
48 UDQM
−
O Write disable for high byte
49 LDQM
−
O Write disable for low byte
50 WR
−
O Memory write strobe