r8a66597 Renesas Electronics Corporation., r8a66597 Datasheet - Page 63

• Manufacturer Part Number: r8a66597
• Description: Assp Usb2.0 2 Port Host/1 Port Peripheral Controller
• Manufacturer: Renesas Electronics Corporation.

R8A66597FP/DFP/BG
Remarks
* Bit number corresponds to the pipe number.
* To clear the status indicated by each bit of the register, write "0"only the bit to be cleared and other bits to "1".
2.11.22 NRDY interrupt status bit of each pipe (PIPENRDY)
R e v 1 . 0 1
♦ NRDY Interrupt status register [NRDYSTS]
15-10 Unassigned. Fix to "0".
9-0
15
Bit
?
?
For the pipe set to "PID=BUF" by the software, when the internal NRDY interrupt request is issued by the controller, it
sets "1" to the bit corresponding to the NRDYSTS register PIPENRDY bit. Here, when the software is used to write "1"
to the bit corresponding to the NRDYENB register, the controller sets "1" in the INTSTS0 register NRDY bit and asserts
the interrupt from the INT_N pin.
Conditions for the internal NRDY interrupt request for the pipe that is issued by the controller are given in 2.11.22.1,
2.11.22.2 and 2.11.22.3. However, while executing the Setup transaction when the Host Controller function is selected,
the above-mentioned conditions do not correspond to the conditions for issuing the interrupt. When the Host Controller
function is selected, a SACK interrupt or SIGN interrupt is detected in the Setup transaction. When the Peripheral
Controller function is selected, an interrupt request is not issued while executing the control transfer status stage.
PIPENRDY
NRDY interrupt status of each pipe
14
?
?
O c t 1 7 , 2 0 0 8
13
?
?
Name
12
?
?
p a g e 6 3 o f 1 8 3
11
?
?
10
?
?
NRDY interrupt status of each pipe is set.
0: Interrupt not issued
1: Interrupt issued
9
0
-
8
0
-
7
0
Function
-
6
0
-
PIPENRDY
5
0
-
4
0
-
Software Hardware Remarks
R/W(0)
3
0
-
2
0
-
W(1)
<Address: 48H>
1
0
-
0
0
-