WT21-A-HCI 查看數據表（PDF） - Unspecified

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WT21-A-HCI

BLUETOOTH HCI MODULE

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Figure 13: WT21 as a PCM Interface Master

Figure 14: WT21 as a PCM Interface Slave

8.1.2 Long Frame Sync

Long Frame Sync is the name given to a clocking format that controls the transfer of PCM data

words or samples. In Long Frame Sync, the rising edge of PCM_SYNC indicates the start of the

PCM word. When WT21 is configured as PCM master, generating PCM_SYNC and PCM_CLK, then

PCM_SYNC is 8-bits long. When WT21 is configured as PCM Slave, PCM_SYNC may be from two

consecutive falling edges of PCM_CLK to half the PCM_SYNC rate, i.e., 62.5μs long.

Bluegiga Technologies Oy

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