pnx1700 NXP Semiconductors, pnx1700 Datasheet - Page 117

• Manufacturer Part Number: pnx1700
• Description: Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
Table 2: SYSTEM REGISTERS
4. System Endian Mode
PNX17XX_SER_1
Preliminary data sheet
System Module Registers
Offset 0x06 3FF4
31
30:0
Offset 0x06 3FFC
31:16
15:12
11:8
7:0
Bit
Symbol
POWER_DOWN
Unused
MODULE_ID
MAJOR_REV
MINOR_REV
APERTURE
3.3 System Module MMIO registers
GLB_REG_POWER_DOWN
GLB_REG_MOD _ID
PNX17xx Series supports both big-endian and little-endian modes, allowing it to run
either little-endian or big-endian software, as required by a particular application or
system.
The operating endian mode of the PNX17xx Series system is defined in one unique
location and it is observed by all the modules in the system.
Section 4.1
Acces
s
R/W
-
R
R
R
R
presents the layout of the system endian mode MMIO register.
Value
0x0000
-
0x0126
0x8
0x1
0x0
Rev. 1 — 17 March 2006
Description
Power down register for the module
To ensure software backward compatibility, writes to unused or
reserved bits should be zero and reads must be ignored.
Unique 16-bit code.
Module ID 0 and -1 are reserved for future use.
0x0126 indicates a the system register module.
Changed upon functional revision, like new feature added to
previous revision
Changed upon bug fix or non functional changes like yield
improvement.
Encoded as: Aperture size = 4K*(bit_value+1).
The bit value is reset to 0 meaning a 4K aperture for the Global
register 1 module according to the formula above.
0: Normal operation of the module. This is the reset value.
1: Module is powered down and the module clock can be
removed. At power down, module responds to all reads with
0xDEADABBA (except for reads of powerdown register). Writes
are answered with DCS ERR signal (except for writes to power
down register).
Chapter 3: System On Chip Resources
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX17xx Series
3-8