at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 558

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 34-6. Transmitter Clock Management
34.6.1.3
Figure 34-7. Receiver Clock Management
558
AT91SAM9263 Preliminary
Receiver Clock Management
Transmitter
Receiver
(CKS field) and at the same time Continuous Transmit Clock (CKO field) might lead to unpredict-
able results.
TK (pin)
The receiver clock is generated from the transmitter clock or the divider clock or an external
clock scanned on the RK I/O pad. The Receive Clock is selected by the CKS field in
SSC_RCMR (Receive Clock Mode Register). Receive Clocks can be inverted independently by
the CKI bits in SSC_RCMR.
The receiver can also drive the RK I/O pad continuously or be limited to the actual data transfer.
The clock output is configured by the SSC_RCMR register. The Receive Clock Inversion (CKI)
bits have no effect on the clock outputs. Programming the RCMR register to select RK pin (CKS
field) and at the same time Continuous Receive Clock (CKO field) can lead to unpredictable
results.
RK (pin)
Divider
Divider
Clock
Clock
Clock
Clock
MUX
CKS
MUX
CKS
CKO
CKO
Controller
Tri_state
MUX
Controller
CKI
INV
Tri-state
MUX
INV
CKI
Data Transfer
Data Transfer
Controller
Tri-state
CKG
Controller
Tri-state
CKG
Clock
Output
Transmitter
Clock
Clock
Output
Receiver
Clock
6249D–ATARM–20-Dec-07