CONTENTS
iv
Seiko Epson Corporation
S1C33L26 TECHNICAL MANUAL
10.5.4 Read/Write Cycles .........................................................................................10-10
10.5.5 SDRAM Refresh ............................................................................................10-12
10.5.6 Power-Down Mode .........................................................................................10-14
10.6 Data Queue Buffer (DQB) ............................................................................................10-14
10.7 Control Register Details ...............................................................................................10-15
SDRAM Initialization Register (SDRAMC_INIT) ...................................................................... 10-15
SDRAM Configuration Register (SDRAMC_CFG) .................................................................. 10-17
SDRAM Refresh Register (SDRAMC_REF) ........................................................................... 10-18
SDRAM Application Configuration Register (SDRAMC_APP) ................................................ 10-20
11.1 CCU Module Overview ..................................................................................................11-1
11.2 Cache Configuration .....................................................................................................11-2
11.3 Cache Settings and Operations ....................................................................................11-3
11.3.1 Cache Enable .................................................................................................11-3
11.3.2 Selecting Area to Be Cached ..........................................................................11-3
11.3.3 Comparing Addresses and Cache Hit/Mishit ..................................................11-3
11.3.4 Reading Operation ..........................................................................................11-4
11.3.5 Writing Operation ............................................................................................11-5
11.3.6 Flush ...............................................................................................................11-5
11.4 Cache Lock with Interrupt Level Specified ....................................................................11-5
11.5 Caching Operation during Debugging ...........................................................................11-6
11.6 Cache Data Integrity .....................................................................................................11-6
11.7 Control Register Details ................................................................................................11-6
Cache Configuration Register (CCU_CFG) .............................................................................. 11-6
Cacheable Area Select Register (CCU_AREA) ....................................................................... 11-7
Cache Lock Register (CCU_LK) ............................................................................................... 11-8
Cache Status Register (CCU_STAT) ....................................................................................... 11-8
Cache Write Buffer Status Register (CCU_WB_STAT) ............................................................ 11-9
CCLK Division Ratio Select Register (CCU_CCLKDV) ........................................................... 11-10
12.1 ITC Module Overview ....................................................................................................12-1
12.2 Vector Table ...................................................................................................................12-2
12.3 Control of Maskable Interrupts ......................................................................................12-3
12.3.1 Interrupt Control Bits in Peripheral Modules ...................................................12-3
12.3.2 ITC Interrupt Request Processing ..................................................................12-3
12.3.3 Interrupt Processing by the C33 PE Core .......................................................12-4
12.4 NMI ................................................................................................................................12-5
12.5 Software Exception .......................................................................................................12-5
12.6 HALT and SLEEP Mode Cancellation ...........................................................................12-5
12.7 Control Register Details ................................................................................................12-6
Interrupt Level Registers (ITC_
_LV) .................................................................................... 12-6
13.1 DMAC Module Overview ...............................................................................................13-1
13.2 DMAC Operating Clock .................................................................................................13-1
13.3 Programming Control Information .................................................................................13-2
13.3.1 Setting the Base Address ...............................................................................13-2
13.3.2 Control Information .........................................................................................13-2
13.3.3 Auto-Reload Data ...........................................................................................13-6
13.4 DMAC Invocation ..........................................................................................................13-6
13.5 Operation of DMAC .......................................................................................................13-8