M66291GP#201 Renesas Electronics America, M66291GP#201 Datasheet - Page 18

• Manufacturer Part Number: M66291GP#201
• Description: IC USB CONTROLLER GEN-PUR 48LQFP
• Manufacturer: Renesas Electronics America

Specifications of M66291GP#201

• Package / Case: 48-LQFP
• Mounting Type: Surface Mount
• Current - Supply: 30mA
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -20°C ~ 85°C
• Interface: Serial
• Controller Type: USB 2.0 Controller
• Lead Free Status / RoHS Status: Not Compliant

M 6 6 2 9 1 G P / H P
2.6 SOF Control Register
R e v 1 . 0 1
(1) SOFOE (SOF Output Enable) Bit (b15)
(2) SOFA (SOF Polarity) Bit (b14)
SOFOE SOFA
b15
13~0
SOF Control Register (SOF_CNT)
15
14
0
0
-
b
Since the INT1 pin is double-function pin, do not allocate the interrupt signal to this pin when using the SOF
signal (Set by the Polarity Set Register).
This bit sets the output polarity of SOF signal.
This bit sets the enable/disable of SOF signal output.
When this bit is set to “1”, if SOF packet is received, the INT1/SOF pin outputs SOF signal. The output polarity is
set by SOFA bit.
The SOF signal outputs the pulse (approx. 0.67 us) equivalent to 32 clocks of the 48 MHz clock after receiving
the PID field. Refer to Figure 2.4.
2 0 0 4 . 1 1 . 0 1
SOFOE
SOF Output Enable
SOFA
SOF Polarity
Reserved. Set it to “0”.
14
0
0
-
USB bus signal
13
0
0
SOF signal
-
("L" active)
p a g e 1 8 o f 1 2 2
12
0
0
-
Bit name
11
0
0
-
SYNC
Figure 2.4 SOF Signal Output Timing
10
0
0
-
PID
SOF packet
9
0
0
-
0 :
1 :
0 :
1 :
FLAME
8
0
0
-
Disable SOF signal output
Enable SOF signal output
"L" active
"H" active
Fixed length
7
CRC5
0
0
-
6
0
0
-
Approx. 0.67us
Function
5
0
0
-
4
0
0
-
3
0
0
-
2
0
0
-
<H/W reset : H'0000>
<S/W reset : H’0000>
<Address : H’0C>
<USB bus reset : ->
1
0
0
-
R
0
b0
0
0
-
W
0