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MOTOROLA MSC8101ADS RevB User’s Manual 41
Functional Description
5•1•4 Manual Soft Reset
To allow run-time Soft-reset, when the Command Converter is disconnected from the JTAG/ONCE
connector and to support resident debuggers, a Soft Reset push-button is provided. When the Soft
Reset push-button is depressed, the SRESET
line is asserted to the MSC8101, generating a Soft
Reset sequence.
Since the SRESET
line may be driven internally by the MSC8101, it must be driven by an open-
drain gate, to avoid contention over that line. If off-board H/W connected to the MSC8101ADS is
to drive SRESET
line, then, it should do so with an open-drain gate, this, to avoid contention over
this line.
IRPC 8:9 ’00’ Interrupt pin configuration. NC/BADDR(29)/
IRQ2,NC/BADDR(30)/IRQ3,NC/BADDR(31)/
IRQ5
are selected as NC (not connect)
800
DPPC 10:11 ‘00’ Data Parity Pin configuration as IRQ
[1:7].
NMIOUT 12 ’0’ NMI interrupt is serviced by the core.
ISB 13:15 ’000’ IMMR initial value 0x0, i.e., the internal space
resides initially at address 0xF0000000
BMS 16 ’0’ Non-functional cleared bit. 10 02
BBD 17 ’0’ Bus busy pins set: ABB
/IRQ2 pin is ABB
DBB/IRQ3 pin is DBB
Reserved 18:21 ‘0000’ Must be cleared
TCPC 22:23 ’10’ Transfer code pins are configured following
way after PONRESET
:
MODCK1/BNKSEL(0)/TC(0) as BKSEL0
MODCK2/BNKSEL(1)/TC(1) as BKSEL1
MODCK3/BNKSEL(2)/TC(2) as BKSEL2
BC1PC 24:25 ’00’ Buffer control 1-pin configuration BCTL1/
DBG_DIS~ functions as BCTL1
18 1E
Reserved 26 ’0’ Reserved. Should be cleared.
DLLDIS
a
27 ’1’ No DLL bypass when value is zero. Controlled
with jumper JP1
MODCK_HI 28:30 ‘111’ High-order bits of the MODCK array i.e.
MODCK[4-6]. Set Clock Mode 57. See [4].
Reserved 31 ’0’ Reserved. Should be cleared.
a. Applies only ONCE after power-up reset.
When HCW is applied from Flash (SW9/7 is ON) DLLDIS and MODCK_HI bits have value shown in ta-
ble. In case of HCW source will be from BCSR (SW9/7 is OFF) those bits set up manually - DLLDIS is
controlled by JP1 and MODCK_HI - by DIP-switch SW9/4-6.
TABLE 5-2. Hard Reset Configuration Word
Field
Data
Bus
Bits
Prog
Value
[Bin]
Implication
Offset In
Flash
[Hex]
Value
[Hex]
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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