Owner's manual

42 Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved) DS508F2
EP7312
High-Performance, Low-Power System on Chip
F13 nBATCHG I Battery changed sense input
F14 VSSIO Pad ground I/O ground
F15 D[11] 1 Low I/O Data I/O
F16 VDDIO Pad power Digital I/O power, 3.3V
G1 PB[1] 1
Input
‡
IGPIO port B
G2 VDDIO Pad power Digital I/O power, 3.3V
G3 TDO 1
Input
‡
O JTAG data out
G4 PB[4] 1
Input
‡
IGPIO port B
G5 PB[6] 1
Input
‡
IGPIO port B
G6 VSSCore Core ground Core ground
G7 VSSRTC RTC ground Real time clock ground
G8 DD[0] 1 Low O LCD serial display data
G9 D[3] 1 Low I/O Data I/O
G10 VSSRTC RTC ground Real time clock ground
G11 A[7] 1 Low O System byte address
G12 A[8] 1 Low O System byte address
G13 A[9] 1 Low O System byte address
G14 VSSIO Pad ground I/O ground
G15 D[12] 1 Low I/O Data I/O
G16 D[13] 1 Low I/O Data I/O
H1 PA[7] 1
Input
‡
I/O GPIO port A
H2 PA[5] 1
Input
‡
I/O GPIO port A
H3 VSSIO Pad ground I/O ground
H4 PA[4] 1
Input
‡
I/O GPIO port A
H5 PA[6] 1
Input
‡
I/O GPIO port A
H6 PB[0] 1
Input
‡
I/O GPIO port B
H7 PB[2] 1
Input
‡
I/O GPIO port B
H8 VSSRTC RTC ground Real time clock ground
H9 VSSRTC RTC ground Real time clock ground
H10 A[10] 1 Low O System byte address
H11 A[11] 1 Low O System byte address
H12 A[12] 1 Low O System byte address
H13 A[13]/DRA[14] 1 Low O System byte address / SDRAM address
H14 VSSIO Pad ground I/O ground
H15 D[14] 1 Low I/O Data I/O
H16 D[15] 1 Low I/O Data I/O
J1 PA[3] 1
Input
‡
I/O GPIO port A
J2 PA[1] 1
Input
‡
I/O GPIO port A
J3 VSSIO Pad ground I/O ground
J4 PA[2] 1
Input
‡
I/O GPIO port A
J5 PA[0] 1
Input
‡
I/O GPIO port A
J6 TXD[1] 1 High O UART 1 transmit data out
Table 21. 256-Ball PBGA Ball Listing (Continued)
Ball Location Name
Strength
†
Reset
State
Type Description