Motorola MPC860 PowerQUICC User Manual page 346

Part IV. Hardware Interface
Name Reset
PD[5] Hi-Z
REJECT2
PD[4] Hi-Z
REJECT3
PD[3] Hi-Z
REJECT4
5
TCK Hi-Z
DSCK
TMS Pulled
up
TDI Pulled
6
DSDI up
TDO Low
DSDO
TRST Pulled
up
SPARE[1Ð4] Hi-Z
Power Supply
1
Pulled Low if RSTCONF pulled down
2
High until SPLL locked, then oscillating
3
Available for MPC860 Rev. B and later only when PA9 or PA8 is not used as RXD4 or TXD4 functions.
4
Available for MPC860 Rev. B and later.
5
Pulled up on rev 0 to rev A.3
6
Hi-Z on rev 0 to rev A.3
13-20
Table 13-1. Signal Descriptions (Continued)
Number Type
U15 Bidirectional General-Purpose I/O Port D Bit 5ÑBit 5 of the
U16 Bidirectional General-Purpose I/O Port D Bit 4ÑBit 4 of the
W16 Bidirectional General-purpose I/O Port D Bit 3ÑBit 3 of the
H16 Input
G18 Input
H17 Input
G17 Output
G19 Input
B7, H18, No-connect Spare signalsÑNot used on current chip revisions. Leave
V15, H4
See Power
Figure 13-2
MPC860 PowerQUICC UserÕs Manual
Description
general-purpose I/O port D.
REJECT2ÑThis input to SCC2 allows a CAM to reject the
current Ethernet frame after it determines the frame address
did not match.
general-purpose I/O port D.
REJECT3ÑThis input to SCC3 allows a CAM to reject the
current Ethernet frame after it determines the frame address
did not match.
general-purpose I/O port D.
REJECT4ÑThis input to SCC4 allows a CAM to reject the
current Ethernet frame after it determines the frame address
did not match.
Provides clock to scan chain logic or for the development port
logic.
Controls the scan chain test mode operations.
Input serial data for either the scan chain logic or the
development port and determines the operating mode of the
development port at reset.
Output serial data for either the scan chain logic or for the
development port.
Reset for the scan chain logic.
unconnected.
VDDLÑPower supply of the internal logic.
VDDHÑPower supply of the I/O buffers and certain parts of
the clock control.
VDDSYNÑPower supply of the PLL circuitry.
KAPWRÑPower supply of the internal OSCM, RTC, PIT, DEC,
and TB.
VSSÑGround for circuits, except for the PLL circuitry.
VSSSYN, VSSSYN1ÑGround for the PLL circuitry.
MOTOROLA