Reset Programming Model
MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
5-13
5.5.4 Multiple MSC8113 Devices in a System With No EPROM
In some cases, the configuration master capabilities of the MSC8113 cannot be used. This can
happen, for example, if there is no EPROM in the system or if the EPROM is not controlled by an
MSC8113. If this occurs, the configuration master actions must be emulated in external logic.
The external hardware connects to all
RSTCONF
signals of the different devices and to the 32 bits
of the data bus. During the rising edge of
PORESET
, the external hardware puts all the devices in
configuration slave mode. For 1024 input clocks after
PORESET
deassertion, the external
hardware can configure the different devices by driving appropriate HRCWs on the data bus and
asserting
RSTCONF
for each device to strobe the data received.
5.6 Reset Programming Model
This section describes the following reset registers in detail:
Hard Reset Configuration Word (HRCW), page 5-13
Reset Status Register (RSR), page 5-16
5.6.1 Hard Reset Configuration Word
When reset configuration is written through the DSI, the host programs this register via the host
port (DSI), as described in Section 14.4, DSI Configuration, on page 14-27. When reset
configuration is written through the system bus, the reset configuration mechanism programs this
register via the system bus port. This register is not directly accessible to the SC140 cores. Some
bits programmed in this register affect bits in various registers that are accessible to the SC140
cores (SIUMCR, ACR, BR0, BCR, IMMR) and can be reprogrammed after reset.
HRCW
Hard Reset Configuration Word
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
EARB EXMC INTOUT EBM
BPS
SCDIS ISPS
IRPC
—
DPPC
NMIOUT
ISBSEL
Type
Written by the hard reset configuration mechanism through the System Bus or by an external host through DSI
Bit
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
—
BBD
MMR
ETH
SEL
TTPC CS5PC
TCPC
LTLEND PPCLE
—
DLLDIS
MODCK_H
—
Type
Written by the hard reset configuration mechanism through the System Bus or by an external host through DSI
Table 5-8. Hard Reset Configuration Word Bit Descriptions
Name
Reset
Description
Settings
EARB
0
0
External Arbitration
Defines the initial value for ACR[EARB]. See
Section 4.2, SIU Programming Model.
0
Internal arbitration is performed.
1
External arbitration is assumed.
EXMC
1
0
External MEMC
Defines the initial value of BR0[EMEMC]. See
Section 12.8, Memory Controller Programming
Model.
0
No external memory controller is
assumed.
1
External memory controller is
assumed.
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 ...