405EX Datasheet, PDF (41/67 Pages) Applied Micro Circuits Corporation – PowerPC 405EX Embedded Processor

PPC405EX – PowerPC 405EX Embedded Processor
Revision 1.09 - August 21, 2007
Preliminary Data Sheet
Table 6. Signal Functional Description (Sheet 4 of 7)
Notes:
1. Receiver input has hysteresis.
2. Must pull up. See “Pull-Up and Pull-Down Resistors” on page 37 for recommended termination values.
3. Must pull down. See “Pull-Up and Pull-Down Resistors” on page 37 for recommended termination values.
4. If not used, must pull up.
5. If not used, must pull down.
6. Strapping input during reset; pull up or pull down as required.
Signal Name
Description
I/O
Type
External Peripheral Interface
PerAddr05:31
Address bus 5:31.
I/O 3.3V LVTTL
PerClk
PerCS0
Clock output.
Chip selects 0.
O
3.3V LVTTL
O
3.3V LVTTL
PerCS1:3
Chip selects 1:3.
I/O 3.3V LVTTL
PerData00:31
PerDataPar0:3
Data bus 0:31.
Data bus parity 0:3.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
PerOE
PerReady
Output enable.
Slave is ready to trasfer data.
O
3.3V LVTTL
I
3.3V LVTTL
receiver
PerBLast
PerErr
Last transfer of burst access.
External bus error.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
PerRW
PerWBE0:3
Read/Write.
Write Byte enable 0:3.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
ExtReset
External reset.
External Bus Master Interface
O
3.3V LVTTL
BusReq
ExtAck
External bus request.
External data transfer complete.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
ExtReq
HoldReq
External data transfer request.
External request for bus access.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
HoldAck
DMA Interface
External request acknowledge.
I/O 3.3V LVTTL
DMAAck0:1
DMAAck2:3
External peripheral DMA acknowledge.
External peripheral DMA acknowledge.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
DMAReq0:1
External peripheral DMA request.
I/O 3.3V LVTTL
DMAReq2
DMAReq3
External peripheral DMA request.
External peripheral DMA request.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
DMAEOT0:1
DMAEOT2:3
External DMA peripheral end-of-transmission.
External DMA peripheral end-of-transmission.
I/O 3.3V LVTTL
I/O 3.3V LVTTL
Notes
2
1, 2
2
1, 4
1, 5
1, 2
1, 2
1
1
1, 4
1, 5
1
1
5
1, 5
5
5
1, 5
AMCC Proprietary
41