![NXP Semiconductors MSC8113 Reference Manual Download Page 481](http://html1.mh-extra.com/html/nxp-semiconductors/msc8113/msc8113_reference-manual_1721628481.webp)
Host Access Modes and Timings
MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
14-21
14.3.4.4 Synchronous Single Read Using Single Strobe Mode
Figure 14-14 shows a synchronous single read access using Single Strobe mode. The DSI
samples
HA[11–29]
,
HDST[0–1]
,
HCID[0–3]
,
HDBE[0–7]
,
HRW
, and
HBRST
on the first
HCLKIN
rising
edge on which
HCS
is asserted. If the
HCID[0–3]
signals match the CHIPID value, the DSI is
accessed. At least one
HDBE
signal must be asserted,
HRW
must be high, and
HBRST
must be
deasserted. When the DCR[RPE] bit is set (see page 14-29), read access to the memory space
(not to the register space) initiates prefetching data from consecutive addresses in the internal
memory space. Assertion of
HTA
indicates that data is valid and that the host must sample the host
data lines and terminate the access. The
HTA
is asserted earlier when the data for this access is
already prefetched to the read buffer.
HTA
is asserted for one
HCLKIN
cycle and driven to logic 1 in
the next cycle. It stops being driven on the next rising edge of
HCLKIN
. The host can start its next
access to the same MSC8113 immediately in the next
HCLKIN
rising edge without deasserting
HCS
between accesses. If the next access is not to the same MSC8113, then, to prevent contention on
HTA
, the host must wait to access the next device until the previous DSI stops driving
HTA
.
Figure 14-14. Synchronous Single Read Using Single Strobe Mode
HCLKIN
HCS
HBRST
HTA (output)
HCID[0–3]
HD[0–63] (output)
HDBE[0–7]
HA[11–29]
HDST[0–1]
valid value
valid value
valid value
valid value
don’t care
don’t care
don’t care
don’t care
don’t
care
don’t care
don’t care
don’t care
don’t care
don’t care
don’t care
don’t care
HRW
don’t care
don’t care
Note: The signal timing shown for HDBE[0–7] is for signals that are asserted. Unused signals remain high (deasserted).
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 ...