Host Access Modes and Timings
MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
14-19
14.3.4.2 Synchronous Single Write Using Single Strobe Mode
Figure 14-12 shows a synchronous single write access using Single Strobe mode. The DSI
samples
HA[11–29]
,
HDST[0–1]
,
HCID[0–3]
,
HD[0–63]
,
HDBE[0–7]
,
HRW
, and
HBRST
on the first
HCLKIN
rising edge on which
HCS
is asserted. If
HCID[0–3]
match the CHIPID value, the DSI is accessed.
At least one
HDBE
signal must be asserted,
HRW
must be low, and
HBRST
must be deasserted.
Assertion of
HTA
indicates that the DSI is ready to complete the current access and the host must
terminate this access. Typically,
HTA
is asserted immediately. If the write buffer is full,
HTA
assertion is delayed.
HTA
is asserted for one
HCLKIN
cycle, driven to logic 1 in the next cycle, and
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
. There is no error
condition to prevent this contention. It is your responsibility to ensure that no contention occurs.
Figure 14-12. Synchronous Single Write Using Single Strobe Mode
HCLKIN
HCS
HBRST
HRW
HTA (output)
HCID[0–3]
HDBE[0–7]
HA[11–29]
HD[0–63]
HDST[0–1]
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
don’t care
don’t care
valid value
valid value
valid value
valid value
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 ...