DVR-8100
5
CIRCUIT DESCRIPTION
Pin No.
Pin Name
I/O
Pin Description
70~73
SMI ADR(10~13)
O
SDRAM address bus.
74
SMI CS(0)
O
Chip select bank 0.
75
SMI CS(1)
-
Unused.
76
SMI RAS
O
SDRAM RAS
77
SMI CAS
O
SDRAM CAS
78
SMI WE
O
SDRAM write enable.
79
SMI DQML
O
DQ MASK enable low.
80
SMI DQMU
O
DQ MASK enable up.
82
SMI CLKIN
I
SDRAM clock input.
84~93
SMI DATA(0~9)
I/O
SDRAM data bus.
95
SMI CLKOUT
O
SDRAM clock out.
97~102
SMI DATA(10~15)
I/O
SDRAM data bus.
Reserved
103
ADC SCLK
I/O
ADC digital audio port clock (unused).
104
ADC LRCLK
I/O
ADCsample rate clock (unused).
105
ADC DATA
I
ADC digital audio data input (unused).
106
ADC PCMCLK
O
Crystal input or master clock input (unused).
JTAG
109
TRST
I
Test reset from emulator module.
110
TMS
I
Test mode select.
111
TDO
O
Test data out to emulator module.
112
TDI
I
Test data input from emulator module.
113
TCK
I
Test clock input from emulator module.
Timers
114
PWM2
I/O
Unused.
115
PWM1
I/O
ROM boot option port (voltage low = emulator booting).
116
PWM0
I/O
Unused.
EMI Interface
117
CPU OE
I/O
Flash ROM output enable.
118
CPU PRO CLK
O
SDRAM clock (unused).
Clock & Reset
120
PIX CLK
I
27MHz main clock input.
122
VDD PLL
-
Supply voltage for PLL (+3V3).
123
VSS PLL
-
Ground for PLL.
124
RESET
I
Chip reset input.
I
Interrupt request 2 from front-end module.
I
Unused.
I
Unused.
O
BYTE 0 Enable
O
BYTE 1 Enable
O
Unused.
I
Wait state (connected to ground).
O
Flash ROM chip select.
O
Flash ROM down-load JIG module select.
134
CPU CE(1)
O
Unused.
135
CPU CE(0)
O
Unused.
138
CPU RAS1
I/O
Unused.
139
CPU CAS0
O
Unused.
140
CPU CAS1
O
Unused.
141~148
CPU DATA(0~7)
I/O
Flash ROM data input/output (0~7).
151~158
CPU DATA(8~15)
I/O
Flash ROM data input/output (8~15).
161~170
CPU ADR(1~10)
O
Flash ROM address (1~10).
173~181
CPU ADR(11~19)
O
Flash ROM address (11~19).
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