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15102SI Datasheet(PDF) 11 Page - Winbond |
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15102SI Datasheet(HTML) 11 Page - Winbond |
11 / 88 page ISD5100 – SERIES Publication Release Date: October, 2003 - 11 - Revision 0.2 operation, voice from Mic inputs are fed to AUX OUT and transmitted to the phone line, while message from other party is input from the AUX IN, then fed through to the speaker for listening. The ISD5100 device has the flexibility for other applications, because the audio paths can be configured differently, with each circuit block being powered-up or –down individually, according to the applications requirement. 7.2.1. Internal Registers The ISD5100 Series have multiple internal registers that are used to store the address information and the configuration or set-up of the device. The two 16-bit configuration registers control the audio paths through the device, the sample frequency, the various gains and attenuations, power up and down of different sections, and the volume settings. These registers are discussed in detail in section 7.3.5. 7.2.2. Memory Architecture The ISD5100 Series memory array are arranged in various pages (or rows) of each 2048 bits as follows. The primary addressing for the pages are handled by 11 bits of address input in the analog mode. A memory page is 2048 bits organized as thirty-two 64-bit "blocks" when used for digital storage. The contents of a page are either analog or digital. This is determined by instruction (opcode) at the time the data is written. A record of where is analog and where is digital, is stored in a message address table (MAT) by the system microcontroller. The MAT is a table kept in the microcontroller memory that defines the status of each message “page”. It can be stored back into the ISD5100 Series if the power fails or the system is turned off. Using this table allows efficient message management. Segments of messages can be stored wherever there is available space in the memory array. [This is explained in detail for the ISD5008 in Applications Note #9 and will be similarly described in a later Note for the ISD5100-Series.] Products Pages (Rows) Bits/Page Memory Size ISD5116 2048 2048 4,194,304 bits ISD5108 1024 2048 2,097,152 bits ISD5104 512 2048 1,048,576 bits ISD5102 256 2048 524,288 bits When a page is used for analog storage, the same 32 blocks are present but there are 8 EOM (End- of-Message) markers. This means that for each 4 blocks there is an EOM marker at the end. Thus, when recording, the analog recording will stop at any one of eight positions. At 8 kHz sampling frequency, this results in a resolution of 32 msec when ENDING an analog recording. Beginning an analog recording is limited to the 256 msec resolution provided by the 11-bit address. A recording does not immediately stop when the Stop command is given, but continues until the 32 millisecond block is filled. Then a bit is placed in the EOM memory to develop the interrupt that signals a message is finished playing in the Playback mode. |
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