CC2560A_16 Datasheet, PDF (13/51 Pages) Texas Instruments – Dual-Mode Bluetooth Controller

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CC2560A NRND; CC2564 NRND
CC2560A, CC2560B, CC2564, CC2564B
SWRS121E – JULY 2012 – REVISED JANUARY 2016
5.7.1.3 Power Supplies and Shutdown – Static States
The nSHUTD signal puts the device in ultra-low power mode and performs an internal reset to the device.
The rise time for nSHUTD must not exceed 20 μs; nSHUTD must be low for a minimum of 5 ms.
To prevent conflicts with external signals, all I/O pins are set to the high-impedance (Hi-Z) state during
shutdown and power up of the device. The internal pull resistors are enabled on each I/O pin, as
described in Section 4.1, Pin Attributes. Table 5-1 describes the static operation states.
Table 5-1. Power Modes
VDD_IN ⁽¹⁾
VDD_IO ⁽¹⁾
nSHUTD ⁽¹⁾
PM_MODE
COMMENTS
1
None
None
Asserted
Shut down
I/O state is undefined. No I/O voltages
are allowed on nonfail-safe pins.
2
None
None
Deasserted
Not allowed
I/O state is undefined. No I/O voltages
are allowed on nonfail-safe pins.
3
None
Present
Asserted
Shut down
I/Os are defined as 3-state with internal
pullup or pulldown enabled.
4
None
Present
Deasserted
Not allowed
I/O state is undefined. No I/O voltages
are allowed on nonfail-safe pins.
5
Present
None
Asserted
Shut down I/O state is undefined.
6
Present
None
Deasserted
Not allowed
I/O state is undefined. No I/O voltages
are allowed on nonfail-safe pins.
7
Present
Present
Asserted
Shut down
I/Os are defined as 3-state with internal
pullup or pulldown enabled.
8
Present
Present
Deasserted
Active
See Section 5.7.1.4, I/O States in
Various Power Modes
(1) The terms None or Asserted can imply any of the following conditions: directly pulled to ground or driven low, pulled to ground through a
pulldown resistor, or left NC or floating (high-impedance output stage).
5.7.1.4 I/O States in Various Power Modes
CAUTION
Some device I/Os are not fail-safe (see Section 4.1, Pin Attributes). Fail-safe
means that the pins do not draw current from an external voltage applied to the
pin when I/O power is not supplied to the device. External voltages are not
allowed on these I/O pins when the I/O supply voltage is not supplied because
of possible damage to the device.
Table 5-2 lists the I/O states in various power modes.
Table 5-2. I/O States in Various Power Modes
I/O NAME
SHUT DOWN⁽¹⁾
I/O State
Pull
DEFAULT ACTIVE⁽¹⁾
I/O State
Pull
HCI_RX
Z
PU
I
PU
HCI_TX
Z
PU
O-H
HCI_RTS
Z
PU
O-H
HCI_CTS
Z
PU
I
PU
AUD_CLK
Z
PD
I
PD
AUD_FSYNC
Z
PD
I
PD
AUD_IN
Z
PD
I
PD
AUD_OUT
Z
PD
Z
PD
TX_DBG
Z
PU
O
(1) I = input, O = output, Z = Hi-Z, — = no pull, PU = pullup, PD = pulldown, H = high, L = low
DEEP SLEEP⁽¹⁾
I/O State
Pull
I
PU
O
O
I
PU
I
PD
I
PD
I
PD
Z
PD
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