Nortel Networks MSC8101 ADS user manual SIU Registers’ Programming, System Initialization

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Operating Instructions

•PPC Bus SDRAM Controller

•GPCM (Flash, BCSR, ATM, Ext. Tools)

•UPM (QFALC, Ext. Tools)

2)Communication functions which include:

•ATM SAR

•Fast Ethernet controller.

•TDMs for T1/E1 and CODEC support

•UART for terminal or host computer connection.

The internal registers of the MPC must be programmed after Hard reset as described in the following paragraphs. The addresses and programming values are in Hexadecimal base.

For better understanding the of the following initialization refer to the

4•5•1 System Initialization

Hard Reset Config. Word is programmed in Flash according to TABLE 5-2. "Hard Reset Configu- ration Word" on page 40.

TABLE 4-3. SIU Registers’ Programming

Register	Init Value[hex]	Description
RMR	0001	Check-Stop Reset enabled.
IMMR	14700000	Internal space begins from 0x1470_0000
SYPCR	FFFFFFC3	Software watchdog timer count - FFFF, Bus-monitor timing FF, PPC Bus-monitor -
		Enabled, Local Bus-monitor - Enabled, S/W watch-dog - disabled, S/W watch-dog
		(if enabled) causes reset, S/W watch-dog (if enabled) - prescaled.
BCR	0000_0000	Single MSC8101, 0 wait-states on address tenure, 1-level Pipeline depth,
		Extended transfer mode disabled for PCC & Local Buses, Odd parity for PPC &
		Local Buses (not relevant for this application, External Master delay enabled,
		Internal space responds as 64 bit slave for external master (not relevant for this
		application).

4•5•1•1 Memory Controller Registers Programming

The memory controller on the MSC8101ADS is initialized to 50/100 MHz operation. I.e., registers’ programming is based on 50/100 MHz timing calculation.

MOTOROLA MSC8101ADS RevB User’s Manual 35

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