23
0833E–HIREL–01/07
e2v semiconductors SAS 2007
PC7447A
Notes:
1. OVDD supplies power to the processor bus, JTAG, and all control signals; VDD supplies power to the processor core and the
PLL (after filtering to become AVDD). To program the I/O voltage, connect BVSEL to either GND (selects 1.8V), or to
HRESET or OV
DD (selects 2.5V); see Table 6-3 on page 11. If used, the pull-down resistor should be less than 250. Because these settings may change in future products, it is recommended BVSEL be configured using resistor options,
jumpers, or some other flexible means, with the capability to reconfigure the termination of this signal in the future if neces-
sary. For actual recommended value of V
2. Unused address pins must be pulled down to GND and corresponding address parity pins pulled up to OVDD.
3. These pins require weak pull-up resistors (for example, 4.7 K
) to maintain the control signals in the negated state after they
have been actively negated and released by the PC7447A and other bus masters.
4. This signal selects between MPX bus mode (asserted) and 60x bus mode (negated) and will be sampled at HRESET going
high.
5. This signal must be negated during reset, by pull-up resistor to OV
DD or negation by HRESET (inverse of HRESET), to
ensure proper operation.
6. Internal pull up on die.
7. Ignored in 60x bus mode.
8. These signals must be pulled down to GND if unused, or if the PC7447A is in 60x bus mode.
9. These input signals are for factory use only and must be pulled down to GND for normal machine operation.
10. This test signal is recommended to be tied to HRESET; however, other configurations will not adversely affect performance.
11. These signals are for factory use only and must be left unconnected for normal machine operation. Some pins that were
NCs on the PC7447, have now been defined for other purposes.
12. These input signals are for factory use only and must be pulled up to OV
DD for normal machine operation.
13. This pin can externally cause a performance monitor event. Counting of the event is enabled through software.
14. This signal must be asserted during reset, by pull down to GND or assertion by HRESET, to ensure proper operation.
15. These pins were NCs on the PC7447. They may be left unconnected for backward compatibility with these devices, but it is
16. These pins were OVDD pins on the PC7447. These pins are internally connected to OVDD and are intended to allow an exter-
nal device to detect the I/O voltage level present inside the device package. If unused, they must be connected directly to
OV
DD or left unconnected.
17. These pins provide connectivity to the on-chip temperature diode that can be used to determine the die junction temperature
of the processor. These pins may be left unterminated if unused.
A12, B6, B10, E10
–
Input
BVSEL
D10
–
Input
BVSEL
F1
High
Input
BVSEL
A5
Low
Input
BVSEL
L4
Low
I/O
BVSEL
TSIZ[0:2]
G6, F7, E7
High
Output
BVSEL
TT[0:4]
E5, E6, F6, E9, C5
High
I/O
BVSEL
D3
Low
Output
BVSEL
VDD
H8, H10, H12, J7, J9, J11, J13, K8, K10, K12, K14, L7, L9, L11, L13,
M8, M10, M12
––
N/A
V
DD
A13, A16, A18, B17, B19, C13, E13, E16, F12, F17, F19, G11, G16,
H14, H17, H19, M14, M16, M18, N15, N17, P16, P18
––
N/A
V
DD_SENSE
G13, N12
–
N/A
Table 8-1.
Pinout Listing for the PC7447A, 360 HITCE Package (Continued)
Signal Name
Pin Number
Active
I/O
I/F Select(1)