ATEVK1104 Atmel, ATEVK1104 Datasheet - Page 264

• Manufacturer Part Number: ATEVK1104
• Description: KIT DEV/EVAL FOR AVR32 AT32UC3A
• Manufacturer: Atmel
• Series: AVR®32r
• Type: MCUr

Specifications of ATEVK1104

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT32UC3A3
• Data Bus Width: 32 bit
• Interface Type: USB, SPI, USART
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: AVR UC3
• Silicon Core Number: AT32UC3A3256
• Silicon Family Name: AVR
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT32UC3A3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25.7.1.3
32058J-AVR32-04/11
Receiver Clock Management
The transmitter can also drive the TX_CLOCK I/O pad continuously or be limited to the actual
data transfer. The clock output is configured by the TCMR register. The Transmit Clock Inver-
sion (CKI) bits have no effect on the clock outputs. Programming the TCMR register to select
TX_CLOCK pin (CKS field) and at the same time Continuous Transmit Clock (CKO field) might
lead to unpredictable results.
Figure 25-6. Transmitter Clock Management
The receiver clock is generated from the transmitter clock or the divider clock or an external
clock scanned on the RX_CLOCK I/O pad. The Receive Clock is selected by the CKS field in
RCMR (Receive Clock Mode Register). Receive Clocks can be inverted independently by the
CKI bits in RCMR.
The receiver can also drive the RX_CLOCK I/O pad continuously or be limited to the actual data
transfer. The clock output is configured by the RCMR register. The Receive Clock Inversion
(CKI) bits have no effect on the clock outputs. Programming the RCMR register to select
RX_CLOCK pin (CKS field) and at the same time Continuous Receive Clock (CKO field) can
lead to unpredictable results.
TX_CLOCK(pin)
Receiver
Divider
Clock
Clock
CKS
MUX
CKO
Controller
Tri-state
MUX
CKI
INV
Data Transfer
Controller
Tri-state
CKG
AT32UC3A
Transmitter
Output
Clock
Clock
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