Pin Usage - Analog Devices ADSP-TS101 TigerSHARC Hardware Reference Manual

Strap Pin Function Descriptions
100k Ω pull-down for the default value. If a strap pin is not connected to
an external pull-up or logic load, the TigerSHARC processor samples the
default value during reset. If strap pins are connected to logic inputs, a
stronger external pull-down may be required to ensure default value
depending on leakage and/or low level input current of the logic load. To
set a mode other than the default mode, connect the strap pin to a suffi-
ciently stronger external pull-up. Table 10-3 lists and describes each of the
TigerSHARC processor's strap pins.
Table 10-3. I/O Strap Pins
Signal Pin
EBOOT
BMS
IRQEN BM
TM1 L2DIR
TM2 TMR0E

Pin Usage

This section suggests recommended handling of unused pins. If an appli-
cation does not make use of a function, the associated signals (pins) may
still require a connection.
10-8
Description
EPROM Boot
0 =Boot from EPROM immediately after reset (default)
1 =Idle after reset and wait for an external device to boot TigerSHARC
processor through the external port or a link port
Interrupt Enable.
0 =Disable and set interrupts to level sensitive after reset (default)
IRQ
1 =Enable and set interrupts to edge sensitive immediately after reset
IRQ
Test Mode 1
0 =Required setting during reset
1 = Reserved
Test Mode 2
0 =Required setting during reset
1 = Reserved
ADSP-TS101 TigerSHARC Processor
Hardware Reference