Chip Configuration Register (Ccfg) 0Xe000 - Toshiba TMPR4925 Manual

5.2.1 Chip Configuration Register (CCFG)
For the bit fields whose initial values are set by boot configuration (refer to Section 3.2), the initial
input signal level and the corresponding register value are indicated.
The following bits are Reserved (Read only). An explanation of the type and default was added so the
default is reflected in the Boot signal.
bit 31: R ADDR[10], bit 28: R UAE, bit 27: R ADDR[16]
~
bit 18: R ADDR[17], bit 12: R ADDR[19]
31
Reserved
15 14 13 12
WR TOE
PCIARB
R/W R/W R
0 0
~ADDR[1]
Bits Mnemonic Field Name
⎯
31:27 Reserved
⎯
26 Reserved
25:24 RF Reduced
Frequency
23:21 BOOTME Boot Memory
20 PCIMODE PCI Mode
⎯
19:18 Reserved
17 TINTDIS TX49/H2 core
Timer Interrupt
Disable
Bus Error on
16 BEOW
Write
15 WR Watchdog Timer
for Reset/NMI
Figure 5.2.1 Chip Configuration Register (CCFG) (1/2)
27 26 25 24 23
RF
Reserved
R/W R/W
0 0
8 7
Reserved
ADDR[4:3]
Note: This bit is always set to "0". (Initial value: 0, R/W)
Reduced Frequency (Initial value: 00, R/W)
These bits select the internal bus speed.
00: full speed
01: 1/2 speed
10: 1/4 speed
11: 1/8 speed
Boot Memory (Initial value: ADDR[8:6], R)
Shows Boot Memory
000: Reserved
001: Reserved
010: Reserved
011: PCIC
100: Reserved
101: EBUSC ch0 at third speed
110: EBUSC ch0 at half speed
111: EBUSC ch0 at full speed
PCI Mode (Initial value: ADDR[15], R)
Shows the PCI operation mode.
L: Satellite mode
H: Host mode
TX49/H2 core Timer Interrupt Disable (Initial value: ADDR[0], R)
Shows whether TX49/H2 core Timer Interrupt is enable or disable.
L: Enable
H: Disable
Bus Error on Write (Initial value: 0, R/W1C)
Indicates that a bus error was generated by a write operation of the TX49/H2 Core.
Writing a "1" clears the bit.
0: No error occur
1: Error occurs
Watchdog Timer for Reset/NMI (Initial value: 0, R/W)
Designates the connection of the Watchdog Timer.
0: Watchdog Timer Interrupt is connected to TX4925 internal NMI*.
1: Watchdog Timer Interrupt is connected to TX4925 internal Reset.
5-3
Chapter 5 Configuration Register
0xE000
21 20 19
BOOTME Reserved
PCIMODE
R R
ADDR[8:6]
ADDR[15]
6 5 4 3
SYSSP Reserved
PCTRCE
R R/W R
11 ~TDO
Description
⎯
⎯
18 17 16
TINTDIS BEOW
R : Type
R/W1C
0 : Initial value
ADDR[0]
2 1 0
ENDIAN WDRST
UAEHOLD
R R/W : Type
R/W1C
0 1 : Initial value
ADDR[14]