mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 405

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

15.5.4.1 THE RAM WORD. The RAM word is a 32-bit wide micro-instruction that is stored
in one of 64 locations in the RAM array.
15.5.4.1.1 RAM Word Format. The RAM word format selects and specifies the timing of all
external signals controlled by the user-programmable machine.
CST4—Chip-Select Timing 4
This bit defines the state of the CSx signal during clock phase 1.
CST1—Chip-Select Timing 1
This bit defines the state of the CSx signal during clock phase 2.
CST2—Chip-Select Timing 2
This bit defines the state of the CSx signal during clock phase 3.
RAM WORD
NOTE:
RESET
RESET
FIELD
ADDR
FIELD
ADDR
R/W
R/W
BIT
BIT
0 = The CSx signal is asserted at the trailing edge of GCLK2.
1 = The CSx signal is negated at the trailing edge of GCLK2.
0 = The CSx signal is asserted at the rising edge of GCLK1.
1 = The CSx signal is negated at the rising edge of GCLK1.
0 = The CSx signal is asserted at the rising edge of GCLK2.
1 = The CSx signal is negated at the rising edge of GCLK2.
*
— = Undefined.
All 32 bits of the RAM word are addressed as shown in the address row above.
CST4
G3T4
R/W
R/W
16
—
—
0
Note: The state of the selected CSx signal depends on the value of each CSTx bit and
CST1
G3T3
R/W
R/W
17
—
—
1
G4T4/
CST2
DLT3
R/W
R/W
18
the corresponding bank.
—
—
2
Freescale Semiconductor, Inc.
WAEN
G4T3/
CST3
For More Information On This Product,
R/W
R/W
19
—
—
3
BST4
G5T4
R/W
R/W
20
MPC823 REFERENCE MANUAL
—
—
4
Go to: www.freescale.com
(MCR
BST1
G5T3
R/W
R/W
21
—
—
5
MAD
) INDIRECT ADDRESSING OF 1 OF 64 ENTRIES
BST2
R/W
22
—
6
RESERVED
R/W
—
BST3
R/W
23
—
7
*
LOOP
R/W
24
—
8
R/W
G0L
—
EXEN
R/W
25
9
—
10
26
AMX
G0H
R/W
R/W
—
—
11
27
G1T4
R/W
R/W
12
28
NA
—
—
Memory Controller
G1T3
R/W
UTA
R/W
13
29
—
—
TODT
G2T4
R/W
R/W
14
30
—
—
15-49
G2T3
LAST
R/W
R/W
15
31
—
—