TC1765_ds_v12 (TC1765_ds_v12_1202.pdf) - Infineon

Preliminary
Table 1 Pin Definitions and Functions (cont’d)
Symbol Pin In
Out
Functions
XTAL1
XTAL2
U18
T18
I
O
ECOUT P1 O EBU Clock Output 3)
TC1765
Oscillator/PLL/Clock Generator Input/Output Pins
XTAL1 is the input to the oscillator amplifier and input to the
internal clock generator. XTAL2 is the output of the oscillator
amplifier circuit. For clocking the device from an external
source, XTAL1 is driven with the clock signal while XTAL2 is
left unconnected. For crystal oscillator operation XTAL1 and
XTAL2 are connected to the crystal with the appropriate
recommended oscillator circuitry.
ECIN N1 – EBU Clock Input
The ECIN pin is used to latch the data from external
components into the EBU. This pin has to be connected to the
ECOUT pin. Additional delay elements might be used to
adapt to long delays at the address and data lines.
CPUCLK R13 O CPU Clock Output3) General purpose clock output (can be disabled if not used). In
addition, the OCDS-2 trace output data are synchronous to
this clock.
TEST
MODE 8)
V16 I Test Mode Select Input
For normal operation of the TC1765 this pin should be
connected to V DD.
V DDOSC R18 – Main Oscillator Power Supply (2.5 V) 9)
V SSOSC R17 – Main Oscillator Ground
V DD
J3,
P2,
T4,
V7,
U11,
U13,
L2,
F17,
D11,
V9
– Core and EBU Power Supply (2.5 V) 9)
Data Sheet 15 V1.2, 2002-12