38K2 Datasheet, PDF (65/151 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

38K2 Group
b7
b0
DP1 control register (DP1CON) [address 002C16]
Bit symbol
DSCONN1
DSPTEN1
DSSUSP1
DSDETE1
DSRSTO1
DSRSMO1
DSRMOD1
DSLSPD1
Bit name
Function
At reset _{R W}
H/W S/W
Downstream port 1 connect bit 0 : Disconnect ; PTCON1 interrupt enabled
0 – OO
1 : Connect ; PTDIS1 interrupt enabled
Downstream port 1 enable bit 0 : Downstream port 1 disabled
0 – OO
1 : Downstream port 1 enabled ; This bit is cleared when
an interrupt of PTDIS1 or PTERR1 is generated.
Downstream port 1 suspend bit 0 : No port suspended
0 – OO
1 : Port suspended; This bit is cleared when an interrupt
of PTDIS1 or PTRSM1 is generated.
Downstream port 1 connect- 0 : Connect/disconnect-state detection disabled ; PTCON1 0 – O O
state detection enable bit
and PTDIS1 interrupts disabled
1 : Connect/disconnect-state detection enabled ; This bit
is cleared when an interrupt of PTCON1, PTDIS1 or
PTERR1 is generated.
Downstream port 1 SE0 signal 0 : Being not output
0 – OO
transmit bit
1 : SE0 signal being output
Downstream port 1 resume
0 : Being not output
0 – OO
signal transmit bit
1 : K-signal being output ; When writing “0”, a low-speed
EOP is output and then a transition to being not
output occurs.
Downstream port 1 bus-state 0 : Mode where a downstream port 1 bus-state is read, 0 – O O
read mode control bit
using RD signal
1 : Mode where a downstream port 1 bus-state is read,
using EOF2 signal (internal signal)
Downstream port 1 USB transfer 0 : Full-speed mode (12MHz)
0 – OO
1 : Low-speed mode (1.5 MHz)
–: State remaining
Fig. 97 Structure of DP1 control register
b7
0 000 00
b0
DP1 status register (DP1STS) [address 002D16]
Bit symbol
Bit name
D1MINUS D1- signal bit
D1PLUS D1+ signal bit
b7:b2
Not used
Fig. 98 Structure of DP1 status register
Function
At reset _{R W}
H/W S/W
In DSRMOD1 = “0”, a downstream port 1 bus-state is ^{In- In-} O ✕
read, using RD signal.
definite definite
In DSRMOD1 = “1”, a downstream port 1 bus-state is
read, using EOF2 signal (internal signal).
In DSRMOD1 = “0”, a downstream port 1 bus-state is ^{In- In-} O ✕
read, using RD signal.
definite definite
In DSRMOD1 = “1”, a downstream port 1 bus-state is
read, using EOF2 signal (internal signal).
Write “0” when writing.
–
– OO
“0” is read when reading.
–: State remaining
Rev.3.00 Oct 15, 2006 page 65 of 147
REJ03B0193-0300