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HT49CV3 Datasheet(PDF) 24 Page - Holtek Semiconductor Inc |
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HT49CV3 Datasheet(HTML) 24 Page - Holtek Semiconductor Inc |
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24 / 47 page ![]() HT49CV3 Rev. 1.10 24 2005-07-12 ♦ 从模式操作 1. CKS 随意和 M1、M0=11 2. 选择 CSEN,MLS(和主模式相同) 3. 置位 SBEN 4. 写数据至 SBDR — 数据存入 TXRX 缓存器 — 等待主时钟信号 (和SCS):CLK — 转向步骤 5 注: SIO 内部操作 ﹡ CLK(SCS)收到 ﹡输出数据至 TXRX 缓存器,SDI 数据移位进入 TXRX 缓存器 ﹡数据传送完毕, TXRX 缓存器中数据锁存入 SBDR) 5. 检查 WCOL; — WCOL=1,清零 WCOL,转向步骤 4 — WCOL=0,转向步骤 6 6. 检查 TDRF 或等待 SBI(串行总线中断) 7. 从 SBDR 读出数据 8. 清零 TDRF 9. 转向步骤 4 M L S S B D R ( R e c e i v e d D a t a R e g i s t e r ) D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 D a t a B u s M U X M U X S D O B u f f e r S D O S D I S B E N M U X A N D , S t a r t S B E N E N I n t e r n a l B a u d R a t e C l o c k C L K C l o c k P o l a r i t y M a s t e r o r S l a v e A N D , S t a r t C 0 C 1 C 2 I n t e r n a l B u s y F l a g S B E N W r i t e S B D R W r i t e S B D R E n a b l e / D i s a b l e E N S B E N M a s t e r o r S l a v e C S E N S C S T D R F A N D W r i t e S B D R W C O L F l a g A N D , S t a r t SIO 结构图 |
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