mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 978

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

This field is compared to the address on the address bus to determine if a PCMCIA window
is being accessed by an internal bus master. These bits are used in conjunction with the
BSIZE field in the POR.
17.5.6 PCMCIA Option Registers
The PCMCIA option registers 0-7 (POR0-POR7) control the size, timing parameters, and
memory access to the individual PCMCIA windows whose base addresses reside in the
corresponding PCMCIA base registers.
BSIZE—PCMCIA Bank Size
This field determines the bank size (the size of the address space in bytes) for the
corresponding PCMCIA window. The bank size is also used as an address mask and is
applied to the PBA field in the associated PCMCIA base register to an address generated
by an internal master. The bank size is calculated from BSIZE as:
POR0–POR7
NOTE: — = Undefined.
RESET
RESET
FIELD
ADDR
FIELD
ADDR
R/W
R/W
BIT
BIT
00000 = 1 bytes.
00001 = 2 bytes.
00011 = 4 bytes.
00010 = 8 bytes.
00110 = 16 bytes.
00111 = 32 bytes.
BankSize
16
0
17
1
PSST
R/W
=
—
BSIZE
2
R/W
—
18
(IMMR & 0xFFFF0000) + 0x84 (POR0), 0x8C (POR1), 0x94 (POR2), 0x9C (POR3),
(IMMR & 0xFFFF0000) + 0x84 (POR0), 0x8C (POR1), 0x94 (POR2), 0x9C (POR3),
GRAYCODE BSIZE
2
Freescale Semiconductor, Inc.
For More Information On This Product,
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3
0xA4 (POR4), 0xAC (POR5), 0xB4 (POR6), 0xBC (POR7)
0xA4 (POR4), 0xAC (POR5), 0xB4 (POR6), 0xBC (POR7)
(
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MPC823 REFERENCE MANUAL
4
Go to: www.freescale.com
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)
5
PSL
R/W
22
—
6
23
7
RESERVED
R/W
24
—
8
PPS
R/W
25
—
9
10
26
PRS
R/W
11
27
—
12
28
PCMCIA Interface
R/W
PSL
OT
13
29
—
PSHT
R/W
—
R/W
WP
14
30
—
17-17
R/W
PV
15
31
—