SDRAM Machine
MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
12-19
Table 12-6 shows SDRAM address multiplexing for
A[16–31].
Example 12-1. Address Multiplexing
This example demonstrates the impact of PSDMR[BSMA] and PSDMR[SDMA] on address
multiplexing. Pay attention to the impact of PSDMR[SDMA] on PSDMR[BSMA]. The mutual
impact is relevant both for single master and multi master. Bank interleaving is based on the
address bits that select the SDRAM bank and impact SDRAM control signals timing in both
modes: multi master and single master.
A[0–31] are the logic address.
A[0–31]
are the address lines.
PSDMR[SDMA] configured to 011. Multiplexes
A[5–20]
to
A[16–31]
.
PSDMR[BSMA] configured to 100. Selects
A[16–18]
as the bank select address. In this case
A[5–7]
are driven both on
BNKSEL[0–2]
and on
A[16–18]
.
The SDRAM device inputs BA. In this case, the lines can be connected either to
A[16–18]
or
to
BNKSEL[2–0]
.
Table 12-5. SDRAM Address Multiplexing (
A[0–15]
)
SDAM
External Bus
Address Lines
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10 A11 A12 A13 A14 A15
000
Signal driven
on external
lines when
address
multiplexing is
enabled
—
—
—
—
—
—
—
—
—
—
—
—
—
A5
A6
A7
001
—
—
—
—
—
—
—
—
—
—
—
—
—
—
A5
A6
010
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
A5
011
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
100
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
101
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Table 12-6. SDRAM Address Multiplexing (
A[16–31]
)
SDAM
External Bus
Address Lines
A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 A31
000
Signal driven
on external
lines when
address
multiplexing is
enabled
A8
A9
A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23
001
A7
A8
A9
A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22
010
A6
A7
A8
A9
A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21
011
A5
A6
A7
A8
A9
A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20
100
A4
A5
A6
A7
A8
A9
A10 A11 A12 A13 A14 A15 A16 A17 A18 A19
101
—
—
A5
A6
A7
A8
A9
A10 A11 A12 A13 A14 A15 A16 A17 A18
Summary of Contents for MSC8113
Page 1: ...MSC8113 Reference Manual Tri Core 16 Bit Digital Signal Processor MSC8113RM Rev 0 May 2008 ...
Page 20: ...MSC8113 Reference Manual Rev 0 xx Freescale Semiconductor Contents ...
Page 28: ...MSC8113 Reference Manual Rev 0 xxviii Freescale Semiconductor ...
Page 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Page 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Page 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Page 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Page 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Page 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Page 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Page 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Page 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Page 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Page 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Page 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
Page 724: ...MSC8113 Reference Manual Rev 0 21 32 Freescale Semiconductor UART ...
Page 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
Page 1171: ...MSC8113 Reference Manual Rev 0 Freescale Semiconductor C 61 EF wait_rts P 01077FFC 9F rts 71 ...
Page 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
Page 1202: ...MSC8113 Reference Manual Rev 0 Index 30 Freescale Semiconductor Index ...