Information

Signal Descriptions
MPC8308 PowerQUICC II Pro Processor Reference Manual, Rev. 1
Freescale Semiconductor 2-3
Figure 2-2. MPC8308 Signal Groupings (2 of 2)
Table 2-1 provides a summary of the signals grouped by function. This table details the signal name, its
description, functional block, number of signals, whether the signal is an input, output, or bidirectional
signal, and the alternate functions of the signal. The table also provides a pointer to the table(s) where the
signal function is described.
Table 2-1. MPC8308 Signal Reference by Functional Block
Name Description
Functional
Block
No. of
Signals
I/O
Table/
Page
Alternate
Function(s)
Table/
Page
MDQ[0:31] DDR data DDR2 32 I/O 9-1/9-4 — —
MECC[0:7] DDR ECC data DDR2 8 I/O 9-1/9-4 — —
MDM[0:3] DDR data mask DDR2 4 O 9-1/9-4 — —
MDM[8] DDR data mask DDR2 1 O 9-1/9-4 — —
MDQS[0:3] DDR data
strobe
DDR2 4 I/O 9-1/9-4 — —
1
1
HRESET
PORESET
MPC8308
1
1
System
Control
3 Signals
Clock
Interface
2 Signals
SYS_CLK_IN
RTC_PIT_CLOCK
THERM0
2 Misc
Signals
1
1
SRESET
1
QUIESCE
TEST_MODE
1
Test
Interface
1 Signal
2
RXA, RXA
SD_IMP_CAL_RX
SD_REF_CLK, SD_REF_CLK
SD_IMP_CAL_TX
2
1
1
PCIExpress
PHY
SD_PLL_TPD
1
SD_PLL_TPA_ANA
1
10 Signals
USBDR_PWR_FAULT
USBDR_CLK
USBDR_DIR
USBDR_NXT
USBDR_TXDRXD[0:7]
USBDR_PCTL[0:1]
USBDR_STP
1
1
1
1
8
2
1
USB
Interface
15 Signals
1
IIC_SCL1
I
2
C
Interface
4 Signals
1
IIC_SDA1
IIC_SCL2/CKSTOP_IN
IIC_SDA2/CKSTOP_OUT
1
1
TSEC_TMR_PP[1:2]
2
TSEC_TMR_ALARM[1]
1
TSEC_TMR_GCLK
1
TSEC_TMR_CLK/GPIO[8]
TSEC_TMR_PP[3]/GPIO[13]
TSEC_TMR_ALARM[2]/GPIO[14]
1
TSEC_TMR_TRIG[1]/GPIO[11]
TSEC_TMR_TRIG[2]/GPIO[12]
1
1
1
1
Interface
IEEE 1588
9 Signals
TXA, TXA
2