NEC Renesas mPD720210, Руководство пользователя по оборудованию

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μ
PD720210 2. Pin Function
R19UH0093EJ0200 Rev.2.00 Page 8 of 59
May 26, 2014
2.4 System Interface Pins
Pin Name
Pin
No.
I/O
Type
Active
Level
Function
SUSPEND/NRDCLKO 1 OUT High/NA
SUSPEND Output or CLKOUT depending on pin strap setting of
SPICSB and OCI1B.
SUSPEND is Suspend state output
1: in suspend state
0: not in suspend state
[Note]
SUSPEND/NRDCLKO output level is Hi-z till this pin function is
configured as SUSPEND output or clock output for
non-removable device
SPICSB OCI1B Pin Function
Low
Low NRDCLKO
High SUSPEND
High X
Depends on Serial ROM
setting
VBUSM 43 IN High
Upstream Port VBUS Monitor
Divide VBUS to 3.3V and connect to VBUSM
BUSSEL 44 IN N/A
Power Mode Select Input
0: Bus-power setting
1: Self-power setting
LED1B/SUSPEND 37 OUT Low
When the external ROM is not used (SPICSB is low),
LED1B/SUSPEND is used as LED function for LED1B pin for
port1 with the following pin strap settings. When the external
ROM is used (SPICSB is high) and SUSPEND function is enabled
in the ROM Writing Tool, LED1B/SUSPEND is used as
SUSPEND function. If the SUSPEND function is not enabled, this
pin is not functional (Hi-Z).
[Function]
LED1B is LED control output signal to indicate port enable. Note
that
μ
PD720210 supports only Green Color of port indicator.
0: Port is enabled
Hi-Z: Port is disabled
Suspend state is shown by the following pin level.
1: in suspend state
0: not in suspend state
SPICSB SPISCK/
LED4B SPISO/
LED3B SPISI/
LED2B LED1B/
SUSPEND Pin Function
Low High High High High LED1B
Low Others High Reserved (Hi-Z)
Low X X X Low Reserved (Hi-Z)
High X X X X SUSPEND or Hi-Z
[Pin strapping option]
- LED function (Refer to Chapter 5.1.2)
- Battery Charging mode (Refer to Chapter 5.1.6)
- Address length of external ROM (Refer to Chapter 5.1.8)
RESETB 2 IN Low Chip Reset Input