R8A66597BG RENESAS [Renesas Technology Corp], R8A66597BG Datasheet - Page 24

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

R8A66597FP/DFP/BG
2.4 System Configuration Status
Remarks
None
2.4.1
2.4.2
2.4.3
2.4.4
R e v 1 . 0 1
♦ Port0 System Configuration Status Register [SYSSTS0]
15-14
13-6 Unassigned. Fix to "0".
4-3 Unassigned. Fix to "0".
1-0
Bit
5
2
15
OVCMON
?
?
OVCMON
OVCUR0A, OVCUR0B pin monitor
SOFEA
Port 0 HOST SOF active monitor
IDMON
ID pin monitor
LNST
Port0 USB data line interface monitor
OVCUR0A, OVCUR0B pin monitor bit (OVCMON)
The controller sets the OVCUR0A pin status to bit 15 of this register, and the input status of OVCUR0B pin to bit 14.
Port0 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 PORT0 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 Port0
ID0 pin monitor bit (IDMON)
The controller sets the input status of the ID0 pin to this bit.
Line status monitor bit (LNST)
USB data bus line status table of the controller is shown in Table 2.9. The controller monitors the Port0 USB data bus
line status (D+ and D- line) in the SYSSTS0 register LNST bit.
Refer to this LNST bit after the "attach" process (write "DPRPU=1") when the Peripheral Controller function is selected,
and after pull-down is enabled (write "DRPD=1") when the Host Controller function is selected.
14
?
?
O c t 1 7 , 2 0 0 8
13
?
?
Name
12
?
?
p a g e 2 4 o f 1 8 3
11
?
?
10
?
?
Sets the input status of OVCUR0A and
OVCUR0B pins.
00: OVCUR0A=Low, OVCUR0B=Low
01: OVCUR0A=Low, OVCUR0B=High
10: OVCUR0A=High, OVCUR0B=Low
11: OVCUR0A=High, OVCUR0B=High
Displays the status of UACT bit setting in
response to Port0 operations
0: (micro) SOF issuance stopped
1: (micro) SOF issuance continued
Sets the input status of ID0 pin.
0: ID0=Low
1: ID0=High
Sets the USB line status of Port0.
Refer to the detailed explanation.
9
?
?
8
?
?
7
?
?
Function
6
?
?
5
?
?
4
?
?
Software
3
?
?
R
R
R
R
IDMON
Hardware Remarks
2
?
?
W
W
W
W
<Address: 04H>
1
0
?
LNST
0
0
?