MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
13-1
System Bus
13
The 60x-compatible system bus provides flexible support for the internal SC140 DSP cores as
well as other internal and external 60x-compatible bus masters. The system bus allows 32-bit
addressing, a 64-bit data bus, and burst operations that transfer as many as 256 bits of data in a
four-beat burst. The data bus is accessed in 8-bit, 16-bit, 32-bit, and 64-bit data ports. The system
bus handles accesses of 1, 2, 3, and 4 bytes, aligned or unaligned, on 4-byte boundaries; it also
handles 64-bit, 128-bit, 192-bit, and 256-bit accesses. The address and data buses handle
synchronous, one-level pipeline transactions. The system bus interface can be configured to
support both external and internal masters or internal masters only. This chapter describes the
system bus signals and the operational protocols.
13.1 System Bus Signals
This section describes the external signals of the MSC8113 system bus. It describes the
individual signals, showing behavior when a signal is asserted and deasserted, when the signal is
an input and an output, and the differences in how signals work in external-master or
internal-only configurations.
Note:
A bar over a signal name indicates that the signal is active low–for example,
ARTRY
(address retry) and
TS
(transfer start). Active-low signals are referred to as asserted
(active) when they are low and deasserted when they are high. Signals that are not
active-low, such as
TSIZ[0–3]
(transfer size signals) and
TT[0–4]
(transfer type signals)
are referred to as asserted when they are high and deasserted when they are low.
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 ...