Broadcom BCM1250 User Manual page 34

BCM1250/BCM1125/BCM1125H User Manual
10/21/02
PERIPH_REV3 refers to the third major revision of the peripherals. These are used in the BCM1125,
BCM1125H (All steppings) and later production versions of the BCM1250 (stepping C0 and later, also called
"Pass 3"). This manual describes both the PERIPH_REV2 and PERIPH_REV3 revisions and tags information
that only applies to PERIPH_REV3. The revision number in the system_revision register can be used by
software to determine the available features. Note that code written for the earlier parts will work on
PERIPH_REV3 parts (provided that it correctly observes Reserved fields). An earlier version of the manual
should be used for the prototype parts marked BCM12500 which lack some of the peripheral functionality.
Broadcom Use Only registers and operations are intended for use by Broadcom in testing the device. In most
cases this manual does not describe these options in sufficient detail for them to be safely used. Incorrect
settings of these registers or inappropriate use of operations may cause the system to behave in UNDEFINED
ways, or require the system to be power cycled to restore operation.
B r oadco m C orp or ati on
Page 6 Section 1: Introduction Document 1250_1125-UM100CB-R