AM3517_12 Datasheet, PDF (59/222 Pages) Texas Instruments – ARM Microprocessors

AM3517, AM3505
www.ti.com
SPRS550D – OCTOBER 2009 – REVISED MARCH 2012
Table 2-4. External Memory Interfaces - GPMC Signals Description (continued)
SIGNAL NAME[1]
gpmc_nadv_ale
gpmc_noe
gpmc_nwe
gpmc_nbe0_cle
gpmc_nbe1
gpmc_nwp
gpmc_wait0
gpmc_wait1
gpmc_wait2
gpmc_wait3
DESCRIPTION[2] TYPE[3]
Address Valid or
O
Address Latch
Enable
Output Enable
O
Write Enable
O
Lower Byte Enable. O
Also used for
Command Latch
Enable
Upper Byte Enable O
Flash Write Protect O
External indication of I
wait
External indication of I
wait
External indication of I
wait
External indication of I
wait
ZCN BALL[4]
R1
R2
R3
R4
ZER BALL[4]
AA14
AB14
AA15
W11
SUBSYSTEM PIN
MULTIPLEXING [5]
T1
Y15
T2
W14
T3
V13
T4
AA16
T5
Y14
U1
V14
SIGNAL NAME[1]
sdrc_d0
sdrc_d1
sdrc_d2
sdrc_d3
sdrc_d4
sdrc_d5
sdrc_d6
sdrc_d7
sdrc_d8
sdrc_d9
sdrc_d10
sdrc_d11
sdrc_d12
sdrc_d13
sdrc_d14
sdrc_d15
sdrc_d16
sdrc_d17
sdrc_d18
sdrc_d19
sdrc_d20
sdrc_d21
sdrc_d22
sdrc_d23
sdrc_d24
sdrc_d25
sdrc_d26
Table 2-5. External Memory Interfaces - SDRC Signals Description
DESCRIPTION [2]
SDRAM data bit 0
SDRAM data bit 1
SDRAM data bit2
SDRAM data bit 3
SDRAM data bit 4
SDRAM data bit 5
SDRAM data bit 6
SDRAM data bit 7
SDRAM data bit 8
SDRAM data bit 9
SDRAM data bit 10
SDRAM data bit 11
SDRAM data bit 12
SDRAM data bit 13
SDRAM data bit 14
SDRAM data bit 15
SDRAM data bit 16
SDRAM data bit 17
SDRAM data bit 18
SDRAM data bit 19
SDRAM data bit 20
SDRAM data bit 21
SDRAM data bit 22
SDRAM data bit 23
SDRAM data bit 24
SDRAM data bit 25
SDRAM data bit 26
TYPE [3]
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
ZCN BALL [4]
B21
A21
D20
C20
E19
D19
C19
B19
B18
D17
C17
D16
C16
B16
A16
A15
A7
B7
D7
E7
C6
D6
B5
C5
B4
A3
B3
ZER BALL [4]
E3
D3
C3
C2
F3
D2
C1
D1
G2
G3
H3
G4
H4
G1
J3
J1
T3
U3
U4
V4
V1
V2
V5
V3
W3
W4
Y3
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