DG-ACC-JBST Digi International, DG-ACC-JBST Datasheet - Page 20

• Manufacturer Part Number: DG-ACC-JBST
• Description: JTAG-BOOSTER FOR NETSILICON 3.3V
• Manufacturer: Digi International
• Series: Digi/FS Forthr
• Type: FLASHr

Specifications of DG-ACC-JBST

• Contents: Programmer and Associated Interface Software
• For Use With/related Products: NetSilicon NS9360, NS9750, NS9775
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FS-9051; FS-9051

Power Management Chip for PXA270 processor
8
C o n n e c t C o r e X P 2 7 0 m o d u l e
Note:
The ConnectCore XP 270 module comes with an integrated chip that manages Intel
XScale PXA270 voltages and can implement some minor power management
functions. The chip is a versatile power management IC designed especially for the
XScale type of processors. The chip contain three regulators, which share a common
enable pin. When disabled using the enable pin, the chip enters a low-power state.
To assure stability and minimize overshoot at start-up and during DVM transitions,
Power Management IC implements a controlled rise time of each regulator output.
This is a short list of available features implemented by the PMIC (Power Management
Integrated Circuit):
Note:
Use a large 1-Gbyte memory map; in this case, the SDRAM partition is
256-Mbyte wide. This memory map allows the possibility of connecting to
bigger SDRAM chips.
Three voltage regulators (1 Buck for core voltage, 2 LDOs for SRAM, and PLL
voltage)
Full-integrated synchronous buck regulator with DVM (Dynamic Voltage
Management) — 800mA DC output current
I²C interface module for DVM from 0.58V to 1.6V
Battery fault signal
Input supply voltage range: 2.76V – 5.5V
4x4 mm QFN package
As far as SDRAM signals available on ConnectCore XP 270 module connectors,
the signals are available as references only. The module has not been adapted
to support SDRAM memory outside the module, nor “length-adapted” to
support PXA270 SDRAM timing.
The power management chip doesn’t control all the XScale PXA270 voltages.
The other voltages (VCC_LCD, VCC_MEM, VCC_IO, VCC_BB, VCC_USB) are
controlled directly by a MOS switch from main +3.3 Vdc power supply.
C o n n e c t C o r e X P 2 7 0 H a r d w a r e R e f e r e n c e , R e v . B
0 1 / 2 0 0 6