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SRC4382IPFBT Datasheet(PDF) 71 Page - Texas Instruments |
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SRC4382IPFBT Datasheet(HTML) 71 Page - Texas Instruments |
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71 / 85 page  www.ti.com CHANNEL STATUS AND USER DATA BUFFER MAPS SRC4382 SBFS030C – JANUARY 2006 – REVISED SEPTEMBER 2007 Register 33: SRC Ratio Readback Register (Read-Only) Bit 7 (MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (LSB) SRF7 SRF6 SRF5 SRF4 SRF3 SRF2 SRF1 SRF0 SRI[4:0] Integer Part of the Input-to-Output Sampling Ratio SRF[10:0] Fractional Part of the Input-to-Output Sampling Ratio In order to properly read back the ratio, these registers must be read back in sequence, starting with register 0x32. Register 7F: Page Selection Register Bit 7 (MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (LSB) 0 0 0 0 0 0 PAGE1 PAGE0 PAGE[1:0] Page Selection These bits are utilized to select one of three register pages for write and/or read access via the SPI or I2C serial host interface. The Page Selection Register is present on every register page at address 0x7F, allowing movement between pages as necessary. PAGE1 PAGE0 Register/Buffer Page Selection 0 0 Page 0, Control and Status Registers (Default) 0 1 Page 1, DIR Channel Status and User Data Buffers 1 0 Page 2, DIT Channel Status and User Data Buffers 1 1 Page 3, Reserved Table 5 through Table 8 show the buffer maps for the DIR and DIT channel status and user data buffers. For Table 5, the channel status byte definitions are dependent on the transmission mode, either Professional or Consumer. Bit 0 of Byte 0 defines the transmission mode, 0 for Consumer mode, and 1 for Professional mode. This is applicable for Table 5 and Table 6. For Table 7, the channel status byte definitions are dependent on the transmission mode, either Professional or Consumer. Bit 0 of Byte 0 defines the transmission mode, 0 for Consumer mode, and 1 for Professional mode. In Professional mode, Byte 23 for each channel is reserved for CRC data, which is automatically calculated and encoded by the DIT. There is no need to program Byte 23 for either channel in Professional mode. Copyright © 2006–2007, Texas Instruments Incorporated Submit Documentation Feedback 71 Product Folder Link(s): SRC4382 |
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