RM7965A-900UI 900 MHz 64-bit Microprocessor Data Sheet
Table 22 Interrupt Interface
Pin Name
INT[9:0]*
Type
Description
Interrupt
Input
Ten general processor interrupts, bit-wise ORed with bits 9:0 of the
interrupt register.
Non-maskable interrupt
NMI*
Input
Non-maskable interrupt, ORed with bit 15 of the interrupt register..
Table 23 JTAG Interface
Pin Name
JTDI/DBDI
Type
Description
JTAG/EJTAG data in
Input
JTAG/EJTAG serial data in.
JTAG/EJTAG clock input
JTAG/EJTAG serial clock input.
JTAG/EJTAG data out
JTAG/EJTAG serial data out.
JTAG/EJTAG command
JTCK/DBCK
JTDO/DBDO
Input
Output
JTMS/DBMS
Input
JTAG/EJTAG command signal, signals that the incoming serial data
is command data.
JTRST*/DBRST* Input
JTAG/EJTAG reset.
JTAG/EJTAG select
JTAGSEL
Input
Selects JTAG when JTAGSEL=1 ; selects EJTAG when JTAGSEL=0
Notes:
1. The JTRST* input was added to the RM70xxC and RM7965A CPUs to directly control the reset to the
JTAG state machine. JTAG boundary scan test equipment must be able to drive JTRST* high to allow
JTAG boundary scan operation.
2. The JTRST* input must be connected to GND (Vss) through a 220 to 1 K pull-down resistor to
force the JTAG state machine into the reset state to allow normal operation (JTAG boundary scan
mode disabled).
3. The JTAG interface electrical characteristics are dependent on the VccJ level chosen (2.5 V or 3.3 V).
Table 24 Initialization Interface
Pin Name
BigEndian
Type
Description
Input
Big Endian / Little Endian Control
Allows the system to change the processor addressing mode without
rewriting the mode ROM.
VccOK
Input
Input
Vcc is OK
When asserted, this signal indicates to the RM7965A that the VccInt
power supply has been above the recommended value for more than
100 milliseconds and will remain stable. The assertion of VccOK
initiates the reading of the boot-time mode control serial stream.
ColdReset*
Cold Reset
This signal must be asserted for a power on reset or a cold reset.
ColdReset must be de-asserted synchronously with SysClock.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2100294, Issue 2
57
PMC [ PMC-SIERRA, INC ]
