Gbus Arbiter Priority Register (Garbp) 0Xe018; Timeout Count Register (Tocnt) 0Xe020 - Toshiba TMPR4925 Manual

5.2.6 GBUS Arbiter Priority Register (GARBP)
31
15
Reserved
Bits Mnemonic Field Name
⎯
31:15 Reserved
Arbitration Priority Arbitration Priority (Initial value: 0x4688, R/W)
14:0 PRIORITY
5.2.7 Timeout Count Register (TOCNT)
31
15
Bits Mnemonic Field Name
⎯
31:16 Reserved
15:0 GTOCNT GBUS Timeout
Count
Reserved
PRIORITY
This field determines the priority when GARBC.ARBMD is cleared "0" to choose the
fixed priority.
Bit[14:12] = Lowest Priority Bus Master
Bit[11:9] = Fourth Priority Bus Master
Bit[8:6] = Third Priority Bus Master
Bit[5:3] = Second Priority Bus Master
Bit[2:0] = Highest Priority Bus Master
000: CHI
001: Reserved
010: PDMAC
011: PCIC
100: DMAC
The initial priority is the following.
CHI > PDMAC > PCIC > DMAC
Figure 5.2.6 GBUS Arbiter Priority Register (GARBP)
Reserved
GTOCNT
R/W
0x0FFF
GBUS Timeout Count (Initial value: 0x0FFF, R/W)
This register defined the number of GBUSCLK before a time out occurs.
Figure 5.2.7 Timeout Count Register (TOCNT)
5-10
Chapter 5 Configuration Register
0xE018
R/W
0x4688
Description
⎯
0xE020
Description
⎯
16
: Type
: Initial value
0
: Type
: Initial value
16
: Type
: Initial value
0
: Type
: Initial value