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HighWire HW400c/2 User Reference Guide Rev 1.0
4.2.12 Hardware Revision Register (HRR)
The Hardware Revision Register (HRR) is a Read-Only register. It contains the
current major and minor (optional) hardware revision for the board.
Table 41. Hardware Revision Register (HRR) Offset Address
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
HRR7 HRR6 HRR5 HRR4 HRR3 HRR2 HRR1 HRR0
RR[7:4] = xxxx HW400c/2 Major Revision
4.2.13 PLL Conf uration Re r A
nfi on R s the
ttings for the PLL ftware
etermine the C pera ase refer to either the MPC7447A or
PC7448 Hard Spe ocuments, in the PLL Configuration section, for
table of all po valu
Table 42. PLL Configuration Register A (PLLA) Offset Address 0x12
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
H
HRR[3:0] = yyyy HW400c/2 Minor Revision
ig giste (PLLA)
The PLL Co gurati egister A (PLLA) is a Read-Only register. It contain
. Reading this register (along with PLLB) can help so
ncy. Ple
se CPU
d PU o ting freque
M ware
ssible
cifications d
es. a
Reserved Reserved CPLL5 CPLL4 CPLL3 CPLL2 CPLL1 CPLL0
CPLL[5:0] = 0x0B Default setting for HW400c/2 Standard Version
(CPU core clock is 1.0 GHz when system bus clock is
166 MHz)
October 10, 2006 Copyright 2006, SBE, Inc. Page 54