R8A66597BG RENESAS [Renesas Technology Corp], R8A66597BG Datasheet - Page 26

• Manufacturer Part Number: R8A66597BG
• Description: ASSP (USB2.0 2 Port Host/1 Port Peripheral Controller)
• Manufacturer: RENESAS [Renesas Technology Corp]

R8A66597FP/DFP/BG
Remarks
None
2.4.5
2.4.6
2.4.7
R e v 1 . 0 1
♦ Port1 System Configuration Status Register [SYSSTS1]
15-14
13-6 Unassigned. Fix to "0".
4-2
1-0
Bit
5
15
OVCMON
?
?
OVCMON
OVCUR1 pin monitor
SOFEA
Port1 HOST SOF active monitor
Unassigned. Fix to "0".
LNST
Port1 USB data line status monitor
OVCUR1 pin monitor bit (OVCMON)
The controller sets the OVCUR1 pin status to bit 15 of this resister. Bit 14 is fixed to "0".
Port1 HOST SOF Active Monitor Bit (SOFEA)
When the UACT bit is set to “1” by software while the Host Controller function is valid, the controller displays “1” at this
bit, puts PORT1 in the USB bus enabled status, and outputs SOF.
When the UACT bit is set to “0” by software, the controller goes to the idle status after SOF is output, and displays “0”
at this bit.
When a suspend is executed, after the UAC bit is cleared to “0” by software, this bit can be used to confirm that the
controller outputs the last SOF to Port1
Line status monitor bit (LNST)
The controller monitors the USB data bus line status (D+ line and D- line) of Port1 in the SYSSTS1 register LNST bit.
Each LNST bit consists of two bits. Refer to Table 2.9 for the meaning of each bit.
The Port1 LNST bit is valid only when the Host Controller function is selected. Refer to the LNST bit after pull-down is
enabled (write "DRPD=1") while selecting the Host Controller function.
14
0
0
O c t 1 7 , 2 0 0 8
13
?
?
Name
12
?
?
p a g e 2 6 o f 1 8 3
11
?
?
10
?
?
Sets the status of OVCUR1 pin in bit 15. Bit 14
is fixed to "0".
00: OVCUR1=Low
10: OVCUR1=High
Displays the status of UACT bit setting in
response to Port1 operations
0: (micro) SOF issuance stopped
1: (micro) SOF issuance continued
Sets the Port1 USB line status.
Refer to the detailed explanation.
9
?
?
8
?
?
Function
7
?
?
6
?
?
SOFEA
5
?
0
4
?
?
Software
R
R
R
3
?
?
Hardware Remarks
2
?
?
W
W
W
<Address: 06H>
1
0
?
LNST
when P)
value is
invalid
(Read
H
0
0
?