Manual

8
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
SCKx USARTx Serial Clock I/O
TXDx USARTx Transmit Data I/O
RXDx USARTx Receive Data Input
RTSx USARTx Request To Send Output
CTSx USARTx Clear To Send Input
Synchronous Serial Controller - SSC
TDx SSCx Transmit Data Output
RDx SSCx Receive Data Input
TKx SSCx Transmit Clock I/O
RKx SSCx Receive Clock I/O
TFx SSCx Transmit Frame Sync I/O
RFx SSCx Receive Frame Sync I/O
AC97 Controller - AC97C
AC97RX AC97 Receive Signal Input
AC97TX AC97 Transmit Signal Output
AC97FS AC97 Frame Synchronization Signal Output
AC97CK AC97 Clock signal Input
Timer/Counter - TC
TCLKx TC Channel x External Clock Input Input
TIOAx TC Channel x I/O Line A I/O
TIOBx TC Channel x I/O Line B I/O
Pulse Width Modulation Controller- PWMC
PMWx Pulse Width Modulation Output Output
Serial Peripheral Interface - SPI
SPIx_MISO Master In Slave Out I/O
SPIx_MOSI Master Out Slave In I/O
SPIx_SPCK SPI Serial Clock I/O
SPIx_NPCS0 SPI Peripheral Chip Select 0 I/O Low
SPIx_NPCS1 - SPIx_NPCS3 SPI Peripheral Chip Select Output Low
Two-Wire Interface
TWD Two-wire Serial Data I/O
TWCK Two-wire Serial Clock I/O
CAN Controller
CANRX CAN input Input
CANTX CAN output Output
Table 3-1. Signal Description List (Continued)
Signal Name Function Type
Active
Level Comments