MPC852TADS Freescale Semiconductor, MPC852TADS Datasheet - Page 63

• Manufacturer Part Number: MPC852TADS
• Description: Networking Modules & Development Tools ADS BOARD FOR 852
• Manufacturer: Freescale Semiconductor
• Type: Network Controller & Processorr

Specifications of MPC852TADS

• Memory Type: Flash, SDRAM
• Interface Type: RS-232, Ethernet, PCMCIA
• Operating Voltage: 1.8 V to 3.3 V
• Operating Temperature Range: 0 C to + 30 C
• Board Size: 233 mm x 150 mm
• Product: Modules
• For Use With/related Products: MPC852T
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

51
A. Hot insertion refers to card insertions made when the ADS is powered.
B. Despite the BCSR being mapped as a 32-bit wide register, that should be accessed as such, only the upper 16 bits -
4•10•1
In order to support hot-insertion
PCMCIA power controller. The LTC1315, through which the PC Card VCC is switched, switches 12V VPP’s for the
purpose of card programming as well as gate control of external MOSFET transistors. The LTC1315 is controlled by
BCSR1.
If, for example, a PC Card is inserted while the PCMCIA channel is enabled via BCSR1 then both of the CD(1:2)*
(Card Detect) lines are asserted (low). Thereafter, read the voltage select lines VS(1:2)* status to determine the PC
Card’s operation voltage level accordingly to which PCCVCC(0:1) bits in BCSR1 should be set in order to drive the
correct VCC (5V) to the PC-Card.
If a PC Card is removed from the socket, while the channel is enabled via BCSR1, the negation of CD1~ and CD2~
may be sensed by the MPC and, consequently, the Card’s power supply may be cut.
4•11
The majority of MPC852TADS hardware options are controlled or monitored by the BCSR. The BCSR is a 32
wide read / write register file accessed via the MPC’s CS1 region that includes five registers: BCSR0 to BCSR4. A
CS region has a minimum block size of 32 KB thus registers BCSR0 - BCSR4 are duplicated within that region. See
TABLE 3-2. "Memory Map in MPC852TADS Compatible Mode" on page 21
in MP852TADS New Mode," on page
The BCSR controls / monitors the following functions:
D(0:15) are used.
1)
2)
3)
4)
5)
6)
7)
8)
9)
10) Reset Fast Ethernet PHY
11) RS232 Port 1 Enable / Disable
12) RS232 Port 2 Enable / Disable
13) Hard Reset Configuration Source - BCSR0 / Flash Memory
14) PCMCIA controls:
MPC Hard Reset Configuration
Flash Module Enable / Disable
Flash Size / Delay Identification
DRAM Module Enable / Disable
DRAM Port Width: 32-bit / 16-bit.
DRAM Type / Size and Delay Identification
SDRAM Module Enable / Disable
Fast Ethernet Port Enable / Disable
Fast Ethernet Port Control
PCMCIA Power Control
Board Control & Status Register: BCSR
5V power applied to a 3.3V-only PC Card will inflict perma-
nent damage. Prior to applying power to a PC Card, all appli-
cation software handling the PCMCIA channel must check the
Voltage-Sense lines.
Freescale Semiconductor, Inc.
For More Information On This Product,
A
, socket power is controlled via LINEAR TECHNOLOGY’s LTC1315 dedicated
Go to: www.freescale.com
Functional Description
21.
MPC852TADS - User’s Manual
Warning
or
TABLE 3-1. "Memory Map
Release 1.0
B
-bit