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BIT1612 10-Bit Digital Video Decoder with OSD and T-CON
8
6 Functional Description
6.1 Version Control
BIT1612 內部提供硬體版本資訊及軟體版本資訊,兩組 Register 作為版本控管使用,相關 Register 請參考下
表。
Table 6-1 Version Control Register
Mnemonic Address R/W Bits Description Default
[1:0] Product version
[4:2] Product Number
R_HW_VER 0x000 R 8
[7:5] Product Group
0xAC
R_SW_VER 0x001 RW 8 Software Version Control 0x00
6.2 Interrupt Function
BIT1612 Interrupt Function提供INT Pin (共有Pin 72 Pin 71 Pin 70R_RTSx_SEL = 0x0B) 作為Interrupt
Trigger Output (請參考
6.10 Special Output Setup”小節的說明),經由Register可設定為Edge or Level trigger
output。當 Level Trigger時並可設定為High or Low Active,若 為 Edge Trigger時則可設定為Falling or Rising Active
。其Interrupt架構採用三層架構 (FLAGACK and MASK),架構請參考Figure 6-1BIT1612 提供 8 Interrupt
Flags 12 Interrupt Sources請參考下表
Table 6-2,相關Registers設定請參考 Table 6-3 Table 6-4
Table 6-2 Interrupt Source and Flags
Interrupt Source Bit Function
R_INTSIGIN_SEL (0x0FB[5]) = 0
Active when Input HSYNC Has Some
Changes in 2047 XCLKs
R_HASSIG_FLAG 0
R_INTSIGIN_SEL (0x0FB[5]) = 1
Active when Video Decoder Lock
Selected Source (HLCK & SYNC_RDY
& STD_RDY & AGC1_RDY &
AGC2_RDY) (see
Table 6-4)
R_INTSIGIN_SEL (0x0FB[5]) = 0
Active when Input HSYNC Has No
Change in 2047 XCLKs
R_NOSIG_FLAG 1
R_INTSIGIN_SEL (0x0FB[5]) = 1
Active when Video Decoder Un-Lock
Selected Source (HLCK & SYNC_RDY
& STD_RDY & AGC1_RDY &
AGC2_RDY) (see
Table 6-4)
R_INTMODECHG_SEL (0x0FB[6]) = 0
Active when Input VSYNC Variation
Larger than 8 HSYNCs
R_MODE_FLAG 2
R_INTMODECHG_SEL (0x0FB[6]) = 1
Active when Video Decoder FIDT
(50Hz/60Hz) Changes
Active when Selected VSYNC Falling Edge Occurs
R_INTVS_POL (0x005[4]) = 0 VSYNC Normal
R_VSYNC_FLAG 3
R_INTVS_POL (0x005[4]) = 1 VSYNC Invert
R_INT_ERRSEL (0x006[4]) = 0 Active when Timer 0 Overflow
R_ERROR1_FLAG 4
R_INT_ERRSEL (0x006[4]) = 1
Active when Line Buffer Error Type 1
Occurs
R_INT_ERRSEL (0x006[4]) = 0 Active when Timer 1 Overflow
VP
R_INT_ERRSEL (0x006[4]) = 1
Active when Line Buffer Error Type 2
Occurs
R_ERROR2_FLAG 5
VD From SRC2 (AIN2) or SRC12 (AIN12) or SRC11 (AIN11) (see
Table 6-4)
R_MVCC_FLAG 6 MV or CC Detection (see Table 6-4)
R_IRKEY_FLAG 7
Active when IR Remote Control Detection is Ready or
Active when GPI (General Purpose Input) Status Changes
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