User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 530 of 909 2019 Ambiq Micro, Inc.
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12.2.1 Register Memory Map
Table 759: CLKGEN Register Map
Address(s) Register Name Description
0x40004000 CALXT XT Oscillator Control
0x40004004 CALRC RC Oscillator Control
0x40004008 ACALCTR Autocalibration Counter
0x4000400C OCTRL Oscillator Control
0x40004010 CLKOUT CLKOUT Frequency Select
0x40004014 CLKKEY Key Register for Clock Control Register
0x40004018 CCTRL HFRC Clock Control
0x4000401C STATUS Clock Generator Status
0x40004020 HFADJ HFRC Adjustment
0x40004028 CLOCKENSTAT Clock Enable Status
0x4000402C CLOCKEN2STAT Clock Enable Status
0x40004030 CLOCKEN3STAT Clock Enable Status
0x40004034 FREQCTRL HFRC Frequency Control register
0x4000403C BLEBUCKTONADJ BLE BUCK TON ADJUST
0x40004100 INTRPTEN CLKGEN Interrupt Register: Enable
0x40004104 INTRPTSTAT CLKGEN Interrupt Register: Status
0x40004108 INTRPTCLR CLKGEN Interrupt Register: Clear
0x4000410C INTRPTSET CLKGEN Interrupt Register: Set