Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 366

External Signals
Table 12-2. MPC875/MPC870 Signal Descriptions (continued)
Hard
Name
Reset
PC[15] Hi-Z
DREQ0
L1ST1
PC[13] Hi-Z
MII1-TXD3
SDACK1
PC[12] Hi-Z
MII1-TXD2
TOUT1
PC[11] Hi-Z
USBRXP
PC[10] Hi-Z
USBRXN
TGATE1
PC[7] Hi-Z
CTS4
L1TSYNCB
USBTXP
PC[6] Hi-Z
CD4
L1RSYNCB
USBTXN
PD[8] Hi-Z
RXD4
MII-MDC
RMII-MDC
PE31 Hi-Z
CLK8
L1TCLKB
MII1-RXCLK
PE30 Hi-Z
L1RXDB
MII1-RXD2
12-36
Number Type
R15 Bidirectional General-Purpose I/O Port C Bit 15—Bit 15 of the general-purpose
I/O port C.
DREQ0—IDMA channel 1 request input.
L1ST1—One of four output strobes that can be generated by the
serial interface.
U9 Bidirectional General-Purpose I/O Port C Bit 13—Bit 13 of the general-purpose
I/O port C.
MII1-TXD3—Media-independent interface 1, transmit data 3.
SDACK1—SDMA acknowledge 1 output that is used as a
peripheral interface signal for IDMA emulation or as a CAM
interface signal for Ethernet.
T15 Bidirectional General-Purpose I/O Port C Bit 12—Bit 12 of the general-purpose
I/O port C.
MII1-TXD2—Media-independent interface 1, transmit data 2.
TOUT1—Timer 1 output.
P12 Bidirectional General-Purpose I/O Port C Bit 11—Bit 11 of the general-purpose
I/O port C.
USBRXP—USB receive - gated version of D+.
U11 Bidirectional General-Purpose I/O Port C Bit 10—Bit 10 of the general-purpose
I/O port C.
USBRXN—USB receive - gated version of D-.
TGATE1—Timer 1/timer 2 gate signal
T10 Bidirectional General-Purpose I/O Port C Bit 7—Bit 7 of the general-purpose
I/O port C.
CTS4—Clear to send modem line for SCC4.
L1TSYNCB—Transmit sync input for serial interface TDMb.
USBTXP—USB transmit +.
P10 Bidirectional General-Purpose I/O Port C Bit 6—Bit 6 of the general-purpose
I/O port C.
CD4—Carrier detect modem line for SCC4.
L1RSYNCB—Receive sync input for the serial interface TDMb.
USBTXN—USB transmit -.
T3 Bidirectional General-Purpose I/O Port D Bit 8—Bit 8 of the general-purpose
I/O port D.
RXD4—Receive data for serial channel 4.
MII-MDC—Media-independent interface management data clock.
RMII-MDC—Reduced media-independent interface management
data clock.
P9 Bidirectional General-Purpose I/O Port E Bit 31
(optional: CLK8—One of eight clock inputs that can be used to clock SCCs
open-drain) and SMCs.
L1TCLKB—Transmit clock for the serial interface TDMb.
MII-RXCLK—Media-independent interface receive clock
R8 Bidirectional General-Purpose I/O Port E Bit 30
(optional: L1RXDB—Receive data input for the serial interface TDMb.
open-drain) MII1-RXD2 —Media-independent interface 1, receive data 2.
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Description
Freescale Semiconductor