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MSC8113 Reference Manual, Rev. 0
12-42
Freescale Semiconductor
Memory Controller
12.3.2 GPCM Signals: External Access Termination
The GPCM supports external access termination using
PGTA
, which the MSC8113 synchronizes
and samples internally. If the sampled signal is asserted during a GPCM data phase (second cycle
or later), it is converted to
PSDVAL
, which terminates the current GPCM access.
PGTA
should be
asserted for one cycle. Because
PGTA
is internally synchronized, bus termination may occur up to
three cycles after
PGTA
assertion, so for a read cycle, the device must still output data as long as
POE
is asserted. You select whether
PSDVAL
is generated internally or externally (by means of
PGTA
assertion) by resetting/setting ORx[SETA]. Figure 12-44 shows how a GPCM access is
terminated by
PGTA
assertion. Asserting
PGTA
terminates an access even if ORx[SETA] = 0
(internal
PSDVAL
generation).
Figure 12-43. GPCM Read Followed by Read (ORx[29–30] = 10)
Clock
Address
PSDVAL
CSx
CSy
BCTL0
POE
Data
Hold Time
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 ...