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BIT1612 10-Bit Digital Video Decoder with OSD and T-CON
84
OPCODE A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 #NUMBER COUNT VALUE
| 1byte | 1byte | 1byte | 1byte |
Instruction: FILL @R[ADDR], #NUM, CNT
OPCODE
E
10
E
9
E
8
R
10
R
9
R
8
E
7
E
6
E
5
E
4
E
3
E
2
E
1
E
0
R
7
R
6
R
5
R
4
R
3
R
2
R
1
R
0
COUNT VALUE
| 1byte | 1byte | 1byte | 1byte |
Instruction: MOV @R[ADDR], @E[ADDR], CNT
7.2.3 Start and Interrupt
BIT1612 內建Script Control Function提供Interrupt Process機制,用以處理BIT1612 所產生的Interrupt
(0x002[7:0])並且支援自動Re-ACK機制以減少程式碼的複雜度相關的程式起始位置請參考 Table 7-6
Table 7-6 Start and Interrupt
Event Type Address
POR (Power On Reset) Immediate PC = 0x10
SIGIN (0x002[0]) Index PC = 0x00, 0x01
NOSIG (0x002[1]) Index PC = 0x02, 0x03
MODECHG (0x002[2]) Index PC = 0x04, 0x05
VSYNC (0x002[3]) Index PC = 0x06, 0x07
ERROR1 (0x002[4]) Index PC = 0x08, 0x09
ERROR2 (0x002[5]) Index PC = 0x0A, 0x0B
MV_CC (0x002[6]) Index PC = 0x0C, 0x0D
IR_KEYIN (0x002[7]) Index PC = 0x0E, 0x0F
7.2.4 Serial EEPROM and ROM Space Mapping
BIT1612 在硬體上可支援 24C16 24C32 兩種Serial EEPROM的通訊協定,指令集支援最高 2K
定址空間。使用小於 2KB程式記憶體時可以完全對映,但使用超過 2KB時,則需利用Bank Selection的方
式擴增定址空間,運用R_EEPROM_BANK_SEL可以支援到 64KBROM Size (24C512),如
Figure 7-5
所示。
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