Motorola MSC8101 ADS User's Guide Page 272

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Programming Reference
A-18 MSC8101 User’s Guide
0001 Loop executes 1 time
TLFx[0–3] – Refresh Loop Field
, Bits 22–25
0010 Loop executes 2 times
1111 Loop executes 15 times 0000 Loop executes 16 times
• • • •
0001 Loop executes 1 time
RLFx[0–3] – Read Loop Field
, Bits 14–17
0010 Loop executes 2 times
1111 Loop executes 15 times 0000 Loop executes 16 times
• • • •
000 A12 010 A10 100 A8 110 A6
001 A11 011 A9 101 A7 111 A5
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
DSx1
G0CLx0
RLFx0
0123456789101112131415
BSEL OP1 AMx0AMx1AMx2
GPL_x4
-
DSx0OP0RFEN
MEMORY CONTROLLER
MAMR, MBMR, MCMR
Machine A/B/C Mode Registers
Address: MAMR (0x10170), MBMR (0x10174), MCMR (0x10178)
Reset: 0–15 0000_0000_0000_0100,
*
= Reserved. Write to 0 for future compatibility
*
0
G0CLx1 G0CLx2
DIS
RLFx1 RLFx2 RLFx3 WLFx0 WLFx1 WLFx2 WLFx3 TLFx0 TLFx1 TLFx2 TLFx3
MAD0 MAD1 MAD2 MAD3 MAD4 MAD5
1
Banks that select UPMx are assigned to the PowerPC local bus
0
Banks that select UPMx are assigned to the PowerPC system bus
BSEL – Bus Select, Bit 0
1
Refresh services are required
0 Refresh services are not required
RFEN – Refresh Enable, Bit 1
00 Normal Operation
OP[0–1] – Command Opcode
, Bits 2–3
10 Read from array
01 Write to array
11 Run pattern
000 A[16–31]
AMx[0–2] – Address Multiplex Size
, Bits 5–7
External
A[8–23]
PPC Bus
Address Pin
AMx
Signal
Driven on
External Pin
011 A[16–31]
External
A[5–20]
PPC Bus
Address Pin
AMx
Signal
Driven on
External Pin
001 A[16–31] A[7–22] 100 A[17–31] A[5–19]
010 A[16–31] A[6–21] 101 A[18–31] A[5–18]
00 1 cycle disable period
DSx[0–1] – Disable Timer Period
, Bits 8–9
10 3 cycle disable period
01 2 cycle disable period
11 4 cycle disable period
G0CLx[0–2] – General Line 0 Control
, Bits 10–12
0
PGT
A/PUPMWAIT/PGPL4/PPBS behaves as PGPL4
GPL_x4DIS – GPL_A4 Output Line Disable, Bit 13
UPMx[G4T4/DLT3] is interpreted as G4T4
UPMx[G4T3/WAEN] is interpreted as G4T3
1
PGTA
/PUPMWAIT/PGPL4/PPBS behaves as PUPMWAIT
UPMx[G4T4/DLT3] is interpreted as DLT3
UPMx[G4T3/WAEN] is interpreted as WAEN
0001 Loop executes 1 time
WLFx[0–3] – Write Loop Field
, Bits 18–21
0010 Loop executes 2 times
1111 Loop executes 15 times 0000 Loop executes 16 times
• • • •
RAM address pointer for the command executed
MAD[0–5] – Machine Address
, Bits 26–31
Read/Write
16–31 0000_0000_0000_0000
MAMR
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