SL11R Cypress Semiconductor Corp, SL11R Datasheet - Page 22

• Manufacturer Part Number: SL11R
• Description: IC MCU FULL SPD USB 16B 100LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of SL11R

• Applications: USB Microcontroller
• Core Processor: RISC
• Program Memory Type: Mask ROM (6 kB)
• Controller Series: USB Controller
• Ram Size: 3Kx8
• Interface: 2-Wire Serial, UART, USB
• Number Of I /o: 32
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 65°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1462

Notes:
4.10.2
The Speed Control Register allows the SL11R processor to operate at a number of speed selections. A four-bit divider (SPD3-0
+ 1) selects the speed as shown below. Speed will also depend on the clock multiplier. See Configuration Register (0xC006: R/W)
for more information.
Note:
Upon reset, the lowest speed is selected for low power operation. The SL11R BIOS will configure the clock to 24MHz as part of
its initialization.
Document #: 38-08006 Rev. **
• When the X1 input pin is fed with a 12 MHz signal, the software should set C2 to ‘1’ to enable the PLL.
• X_PCLK is a bidirectional pin allowing an additional clock input for PCLK when selected or an observation pin for PCLK when
• The X_PCLK can be used as the input clock like X1, but only when mode C2=0, C1=1, C0=0.
• Upon reset, the SL11R BIOS will set this register equal to 0x0010 (i.e. C2=0, C1=0, C0=1, PCLK=X1, RCLK=X1, OE=0,
OE = ‘1’.
M1-M0=0=GPIO Mode).
Where:
PCLK
RCLK
OE
D3-D0
D15-D4
Speed Control Register (0xC008: R/W)
is connected to the SL11R processor clock.
is the resulting clock that connects to other modules (i.e. PWM, USB engine).
when OE=1, the X_PCLK (pin 59) will become an output pin of the PCLK value.
SPD3-SPD0
Reserved
Speed selection bits
should be set to all zeros.
D15-D4
0
SPD3-0
0000
0001
0010
0011
0100
0101
0110
1000
1001
1010
1011
1100
1101
0111
1110
1111
SPD3
D3
SPD2
SL11R Speed
D2
48.00 MHz.
24.00 MHz.
16.00 MHz.
12.00 MHz.
09.60 MHz.
08.00 MHz.
06.86 MHz.
06.00 MHz.
05.33 MHz.
04.80 MHz.
04.36 MHz.
04.00 MHz.
03.69 MHz.
03.42 MHz.
03.20 MHz.
03.00 MHz.
SPD1
D1
SPD0
D0
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SL11R