4.2.6 WBZ451H Module Interface Specifications
The WBZ451H module supports all the interfaces available except the below pins on the Chimera SoC. Refer to Figure 4-5 for more details.
PB1 will be configured as By-Pass mode control (CPS) of the FEM (SKY66114-11), so that CPS will disable while the target power ≥ -1 dBm and enable while the target power < -1 dBm.
PA10 syncs with the TX signal and connects with both CTX and CHL for transmitting the High-power mode.
PA9 syncs with the RX signal and connects with CRX for the Receive mode.
CSD pull-high with fixed hardware control.
| Mode | Description | CSD (Pin 7) | CPS (Pin 15) | CRX (Pin 6) | CTX (Pin 2) | CHL (Pin 3) |
|---|---|---|---|---|---|---|
| 0 | All off (Sleep mode)(1) | 0 | X | X | X | X |
| 1 | Receive LNA mode | 1 | 0 | 1 | 0 | X |
| 2 | Transmit High-power mode | 1 | 0 | X | 1 | 1 |
| 3 | Transmit Ligh-power mode | 1 | 0 | X | 1 | 0 |
| 4 | Receive Bypass mode | 1 | 1 | 1 | 0 | X |
| 5 | Transmit Bypass mode | 1 | 1 | X | 1 | X |
| 6 | All off (Sleep mode) | 1 | X | 0 | 0 | X |
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While the device is in TX operation, the state will be in mode 2 and, depending on the target power, can switch to mode 5 automatically. While the device is in RX operation, the state will be in mode 1. While there is no RF operation, the state will be in mode 6 and stay in Sleep mode for power saving.