EMPTY_WM=B_0x0
FMAC Y buffer configuration register
| Y_BASE | Base address of Y buffer |
| Y_BUF_SIZE | Size of Y buffer in 16-bit words For FIR filters, the minimum buffer size is 1 (+ the watermark threshold). For IIR filters the minimum buffer size is the number of feedback taps (+ the watermark threshold). |
| EMPTY_WM | Watermark for buffer empty flag Defines the threshold for setting the Y buffer empty flag when operating in circular mode. The flag is set if the number of unread values in the buffer is less than 2EMPTY_WM. 2: Threshold = 4 3: Threshold = 8 Setting a threshold greater than 1 allows several data to be transferred from the buffer under one interrupt. Threshold should be set to 1 if DMA read requests are enabled (DMAREN = 1 in FMAC_CR register). 0 (B_0x0): Threshold = 1 1 (B_0x1): Threshold = 2 |