ep7312 Cirrus Logic, Inc., ep7312 Datasheet - Page 53

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

DS508F1
Ball Location
M10
M11
M12
M13
M14
M15
M16
N10
N11
N12
N13
N14
N15
N16
P10
P11
P12
P13
P14
P15
P16
M6
M7
M8
M9
N1
N2
N3
N4
N5
N6
N7
N8
N9
P1
P2
P3
P4
P5
P6
P7
P8
P9
R1
R2
R3
R4
PE[1]/BOOTSEL[1]
A[23]/DRA[4]
A[20]/DRA[7]
HALFWORD
SSIRXDA
SSITXFR
DRIVE[1]
nEXTFIQ
SMPCLK
RTCOUT
ADCCLK
VSSRTC
VDDIO
COL[0]
VDDIO
VDDIO
COL[2]
VDDIO
VDDIO
VDDIO
VDDIO
VDDIO
VDDIO
VSSIO
VSSIO
VSSIO
VSSIO
VSSIO
VSSIO
VSSIO
VSSIO
VSSIO
VSSIO
VSSIO
RTCIN
Name
PD[5]
PD[2]
PD[4]
PD[1]
FB[0]
D[27]
D[21]
D[29]
D[26]
D[22]
D[23]
D[24]
Strength
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
†
Table 22. 256-Ball PBGA Ball Listing (Continued)
Input
Reset
High /
State
©
High
High
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Copyright Cirrus Logic, Inc. 2005
‡
(All Rights Reserved)
RTC ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad ground
Pad power
Pad power
Pad power
Pad power
Pad power
Pad power
Pad power
Pad power
Pad power
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
I/O
I/O
O
O
O
O
O
O
O
O
I
I
Digital I/O power, 3.3V
DAI/CODEC/SSI2 frame sync
PWM drive output
PWM feedback input
Keyboard scanner column drive
Data I/O
I/O ground
System byte address / SDRAM address
Digital I/O power, 3.3V
System byte address / SDRAM address
Data I/O
External fast interrupt input
GPIO port E / boot mode select
I/O ground
Digital I/O power, 3.3V
GPIO port D
GPIO port D
DAI/CODEC/SSI2 serial data input
SSI1 ADC serial clock
SSI1 ADC sample clock
Keyboard scanner column drive
Data I/O
Data I/O
Halfword access select output
I/O ground
Data I/O
Data I/O
Real time clock ground
Real time clock oscillator output
I/O ground
I/O ground
Digital I/O power, 3.3V
I/O ground
I/O ground
Digital I/O power, 3.3V
I/O ground
Digital I/O power, 3.3V
I/O ground
I/O ground
Digital I/O power
I/O ground
Data I/O
Digital I/O power, 3.3V
Real time clock oscillator input
Digital I/O power, 3.3V
GPIO port D
GPIO port D
High-Performance, Low-Power System on Chip
Description
EP7312
53