ep7312 Cirrus Logic, Inc., ep7312 Datasheet - Page 35

• Manufacturer Part Number: ep7312
• Description: High-performance, Low-power, System-on-chip With Sdram & Enhanced Digital Audio Interface
• Manufacturer: Cirrus Logic, Inc.

DS508F1
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
Pin
No.
nMEDCHG/nBROM
A[17]/DRA[10]
A[16]/DRA[11]
A[15]/DRA[12]
A[14]/DRA[13]
A[13]/DRA[14]
A[19]/DRA[8]
A[18]/DRA[9]
MOSCOUT
nEXTPWR
nBATCHG
nURESET
VDDOSC
VSSOSC
MOSCIN
VDDIO
nTRST
VDDIO
BATOK
Signal
VSSIO
VSSIO
VSSIO
nPOR
D[20]
D[19]
D[18]
D[17]
D[16]
D[15]
D[14]
D[13]
A[12]
D[12]
A[11]
D[11]
A[10]
D[10]
A[9]
D[9]
A[8]
D[8]
A[7]
D[7]
Table 20. 208-Pin LQFP Numeric Pin Listing (Continued)
©
Copyright Cirrus Logic, Inc. 2005
Strength
Schmitt
Schmitt
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
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†
Reset
State
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Oscillator Ground
Oscillator Power
Pad Gnd
Pad Gnd
Pad Gnd
Pad Pwr
Pad Pwr
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
High-Performance, Low-Power System on Chip
I
I
I
I
I
I
I
I
Media change interrupt input /
Battery changed sense input
External power supply sense
internal ROM boot enable
Oscillator power in, 2.5 V
JTAG async reset input
Digital I/O power, 3.3 V
Digital I/O power, 3.3 V
System byte address /
System byte address /
System byte address /
System byte address /
System byte address /
System byte address /
System byte address /
Main oscillator output
System byte address
System byte address
System byte address
System byte address
System byte address
System byte address
Power-on reset input
Main oscillator input
Oscillator Ground
SDRAM address
SDRAM address
SDRAM address
SDRAM address
SDRAM address
SDRAM address
SDRAM address
Battery OK input
User reset input
Description
I/O ground
I/O ground
I/O ground
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
Data I/O
input
EP7312
35