at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 8

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Table 3-1.
8
Signal Name
TCLKx
TIOAx
TIOBx
SPIx_MISO
SPIx_MOSI
SPIx_SPCK
SPIx_NPCS0
SPIx_NPCS1-SPIx_NPCS3
TWD
TWCK
HDPA
HDMA
HDPB
HDMB
DDM
DDP
ETXCK
ERXCK
ETXEN
ETX0-ETX3
ETXER
ERXDV
ERX0-ERX3
ERXER
ECRS
ECOL
EMDC
EMDIO
EF100
AT91SAM9G20 Preliminary
Signal Description List (Continued)
Function
TC Channel x External Clock Input
TC Channel x I/O Line A
TC Channel x I/O Line B
Master In Slave Out
Master Out Slave In
SPI Serial Clock
SPI Peripheral Chip Select 0
SPI Peripheral Chip Select
Two-wire Serial Data
Two-wire Serial Clock
USB Host Port A Data +
USB Host Port A Data -
USB Host Port B Data +
USB Host Port B Data +
USB Device Port Data -
USB Device Port Data +
Transmit Clock or Reference Clock
Receive Clock
Transmit Enable
Transmit Data
Transmit Coding Error
Receive Data Valid
Receive Data
Receive Error
Carrier Sense and Data Valid
Collision Detect
Management Data Clock
Management Data Input/Output
Force 100Mbit/sec.
Serial Peripheral Interface - SPIx_
Timer/Counter - TCx
Two-Wire Interface
USB Device Port
Ethernet 10/100
USB Host Port
Analog
Analog
Analog
Analog
Analog
Analog
Output
Output
Output
Output
Output
Output
Type
Input
Input
Input
Input
Input
Input
Input
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Active
Level
High
Low
Low
Comments
MII only, REFCK in RMII
MII only
ETX0-ETX1 only in RMII
MII only
RXDV in MII, CRSDV in RMII
ERX0-ERX1 only in RMII
MII only
MII only
6384B–ATARM–15-Dec-08