AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 430

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

32.8.5
Name:
Access Type:
• CKS: Transmit Clock Selection
• CKO: Transmit Clock Output Mode Selection
• CKI: Transmit Clock Inversion
0 = The data outputs (Data and Frame Sync signals) are shifted out on Transmit Clock falling edge. The Frame sync signal
input is sampled on Transmit clock rising edge.
1 = The data outputs (Data and Frame Sync signals) are shifted out on Transmit Clock rising edge. The Frame sync signal
input is sampled on Transmit clock falling edge.
CKI affects only the Transmit Clock and not the output clock signal.
• CKG: Transmit Clock Gating Selection
31
23
15
–
7
0x3-0x7
CKS
CKO
CKG
SSC Transmit Clock Mode Register
0x0
0x1
0x2
0x3
0x0
0x1
0x2
0x0
CKG
30
22
14
SSC_TCMR
Read-write
–
6
Selected Transmit Clock
Divided Clock
RK Clock signal
TK Pin
Reserved
Transmit Clock Output Mode
None
Continuous Transmit Clock
Transmit Clock only during data transfers
Reserved
None, continuous clock
Transmit Clock Gating
CKI
29
21
13
–
5
28
20
12
–
4
PERIOD
STTDLY
CKO
27
19
11
3
26
18
10
2
SAM7S Series [DATASHEET]
START
6175M–ATARM–26-Oct-12
25
17
9
1
Input-only
CKS
TK pin
Output
Output
24
16
8
0
430