MC72000 Freescale Semiconductor, MC72000 Datasheet - Page 23

• Manufacturer Part Number: MC72000
• Description: Integrated Bluetooth Radio
• Manufacturer: Freescale Semiconductor

MOTOROLA
SSI_SCK/GPIO_B0/GPIO_B3/BT_TP0/BT_TP3
SSI_FS/GPIO_B1/GPIO_B4/BT_TP1/BT_TP4
RESET_BB
REFCTRL
GPIO_B0/
SSI_SCK
GPIO_B3
BT_TP0/
TRST_B
BT_TP3
MODE1
RTCK
TMS
TCK
TTS
This active low Schmitt trigger input pin provides an asynchronously reset signal to all TAP
controllers to initialize the test controller. Leave open or pull-down if JTAG is unused.
The test mode select input pin is used to sequence all TAP controllers. The TAP control module
and the TTS device port determine the TAP sequenced. TMS is sampled on the rising edge of
TCK. Leave open or pull-up if JTAG is unused.
The test clock input pin is used to synchronize the JTAG test logic. It provides the clock to
synchronize the test logic and shift serial data to and from all TAP controllers. Leave open if JTAG
is unused.
The return test clock output pin returns the synchronization test clock to ARM development tools to
be entered from the serial debug input line.
The test tap select input pin directly controls the multiplexing logic to select between the chip TAP
and the core TAP. A logic 1 applied to the tap select input will select the chip TAP. Leave open if
JTAG is unused.
Test/boot mode select pins. In order to support a flexible development system, the system must be
able to boot from different memories during system reset and power-up. This pin can select two of
the four different memory maps, as MODE0 is hardwired internally. All the different boot modes
start reading data at address 0x0000_0000, since this is where the ARM7 reset vector is located.
The reset in pin is an active low Schmitt trigger input that provides reset to the internal circuitry. The
RESET input will be qualified as valid if it will be asserted for at least three CLK cycles.
The reference control pin is a dedicated output from the clock reset module (CRM) which enables/
disables the reference clock.
Alternate Function 1 (GPIO)
Alternate Function 2
Normal mode
Freescale Semiconductor, Inc.
For More Information On This Product,
MC72000 Advance Information Data Sheet
Table 15. Pin Descriptions (Continued)
Go to: www.freescale.com
SSI and UART Signals
GPIO_0 or GPIO_3 on Port B. Two signals are internally connected
Bluetooth test port
Bluetooth Signals
The serial transmit clock signal is used by the transmitter and can
be either continuous or gated. The pin is normally used in
synchronous mode. Two signals are internally connected in the chip
to this pin. Use precautions when configuring these two signals, as
the two internal signals must be configured to comply with each
other.
in the chip to this pin. Use precautions when configuring these two
signals, as the two internal signals must be configured to comply
with each other.
the chip to this pin. Use precautions when configuring these two
signals, as the two internal signals must be configured to comply
with each other.
Preliminary
signal.
Two signals are internally connected in
Package Pinout
23