Sharp LH79524 - Table 7-7. 16-Bit Wide Data Bus Address Mapping, SDRAM (RBC)

LH79524/LH79525 User’s Guide External Memory Controller
Version 1.0 7-25
NOTE: **The EMC always transfers 32 bits of data in each transaction. For chip selects with a 16-bit wide
data bus, the EMC performs two transfers: 1) a column transfer with the lowest bit set to 0, and 2) a
column transfer with the lowest bit set to 1.
Table 7-7. 16-bit Wide Data Bus Address Mapping, SDRAM (RBC)
16-BIT WIDE DEVICE 16M SDRAM (1M × 16, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 9/BA1 — —— 2019181716151413121110
AHB Address To Column Address9/BA1 — ——AP——8765432**
16-BIT WIDE DEVICE 16M SDRAM (2M × 8, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address — 10/BA0 — — 21 20 19 18 17 16 15 14 13 12 11
AHB Address To Column Address — 10/BA0——AP—98765432**
16-BIT WIDE DEVICE 64M SDRAM (4M × 16, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 9/BA1 10/BA0—222120191817161514131211
AHB Address To Column Address9/BA110/BA0——AP——8765432**
16-BIT WIDE DEVICE 64M SDRAM (8M × 8, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 11/BA110/BA0—232221201918171615141312
AHB Address To Column Address11/BA110/BA0——AP—98765432**
16-BIT WIDE DEVICE 128M SDRAM (8M × 16, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 11/BA110/BA0—232221201918171615141312
AHB Address To Column Address11/BA110/BA0——AP—98765432**
16-BIT WIDE DEVICE 128M SDRAM (16M × 8, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 11/BA112/BA0—242322212019181716151413
AHB Address To Column Address11/BA112/BA0——AP1098765432**
16-BIT WIDE DEVICE 256M SDRAM (16M × 16, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 11/BA1 10/BA0 24 23 22 21 20 19 18 17 16 15 14 13 12
AHB Address To Column Address11/BA112/BA0——AP—98765432**
16-BIT WIDE DEVICE 256M SDRAM (32M × 8, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 11/BA1 12/BA0 25 24 23 22 21 20 19 18 17 16 15 14 13
AHB Address To Column Address11/BA112/BA0——AP1098765432**
16-BIT WIDE DEVICE 512M SDRAM (32M × 16, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 11/BA1 12/BA0 25 24 23 22 21 20 19 18 17 16 15 14 13
AHB Address To Column Address11/BA112/BA0——AP1098765432**
16-BIT WIDE DEVICE 512M SDRAM (64M × 8, RBC)
External Address Pin, A[14:0] 14 13 1211109876543210
AHB Address To Row Address 13/BA1 12/BA0 26 25 24 23 22 21 20 19 18 17 16 15 14
AHB Address To Column Address13/BA112/BA0—11AP1098765432**