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CS5535 数据表(PDF) 364 Page - National Semiconductor (TI) |
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CS5535 数据表(HTML) 364 Page - National Semiconductor (TI) |
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364 / 555 page  www.national.com 364 Revision 0.8 UART/IR Controller Register Descriptions (Continued) 5.12.1.2 UART[x] Secondary Dongle and Status (UART[x]_DONG) UART1 Secondary Dongle and Status (UART[1]_DONG) UART2 Secondary Dongle and Status (UART[2]_DONG) UART[x]_DONG is used for secondary identification of the dongle interface, and along with UART[x]_MOD, constitutes a VDI (virtual dongle interface). The transceivers can also be configured for available mode by driving IRSL[2:0]. This support is not provided in the current design, but the values of these signals are written in VDI UART[x]_MOD in case there is a need to know what legacy software writes on IRSL[2:0] bits (via IRCFG1 at I/O Offset 04h in Bank 7). The MSR is readable by the software so the status of IRSL[2:0] can be known. Note: NCH: No Change; INV: Invert. MSR Address 51400039h Type R/W Reset Value xxh MSR Address 5140003Dh Type R/W Reset Value xxh UART[x]_DONG Register Map 76 54 32 10 RSVD IRSL2 IRSL1 IRSL0 ID3_SEC ID0_SEC UART[x]_DONG Bit Descriptions Bit Name Description 7:5 RSVD Reserved. Write as 0. 4:2 IRSL2-IRSL0 (RO) IRSL[2:0] (Read Only). These bits are reflections of settings in the Transceiver Identifi- cation and Control (IRIC) bits (Bank 7, I/O Offset 04h[2:0]). Software may read this field to determine the settings of the virtual IR interface (dongle). See Section 5.12.10.5 "IR Interface Configuration Register 1 (IRCFG1)" on page 398 for decode. 1 ID3_SEC Secondary Dongle Control Signal. Secondary virtual dongle configuration bit. See Table 5-30. Refer to Section 4.11.3 "Dongle Interface" on page 131 for additional informa- tion. 0 ID0_SEC Secondary Dongle Control Signal. Secondary virtual dongle configuration bit. See Table 5-30. Refer to Section 4.11.3 "Dongle Interface" on page 131 for additional informa- tion. Table 5-30. Secondary ID Encoding IRSL2 IRSL1 ID3 ID0 NCH INV NCH: No support INV: 36 kHz demodulation support (RC-5 and RC-6 protocols) Reserved INV NCH NCH: No support INV: 38 kHz demodulation support (NEC protocol) NCH: No support INV: 40 kHz demodulation support (JVC, Panasonic protocols) INV INV NCH: No support INV: 56.9 kHz demodulation support (RCA protocol) Reserved |
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